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91	Agriculture Productivity	ABS-69
Reviev : Population Establishment and Genetic Study of Jawa, Bali and Sumatra Salak Crossing Sri Hadiati, Tri Budiyanti, Riska, NLP. Indiyani, Ellina Mansyah, Jumjunidang Research Center for Horticulture and Estate Crops, National Research and Innovation Agency (BRIN). Abstract Indonesia has a high diversity of salak. The cultivars that are widely cultivated are salak Pondoh, Java, Bali, and Sumatra. These cultivars have a delicious taste and different superiorities. The crossing is needed to combine their superiorities and obtain superior varieties. Crosses result in 17 hybrids salak populations with moderate to high diversities. Salak Sidempuan (SDP, SDS, SDM) and the progenies derived from crossing salak Sidempuan as female parents have a larger plant and leaflets size, but they have relatively few leaves. Salak Bali, salak Sidempuan, and the progenies derived from crossing salak Sidempuan as the female parents have a flesh thickness of 1.0 cm. A crossing between salak Pondoh (non-astringent) x salak Java (astringent) and a crossing between salak Sidempuan (astringent) x salak Sanjung (astringent ) produced progenies whose fruit have an astringent taste. On the other hand, the crossing between salak Sidempuan x Mawar produce partially stringent fruit and some non-astringent. Selection of these progenies resulted in three superior varieties, namely Sari Intan 48, Sari Intan 541, and Sari Intan 295, and an ideal candidate variety, namely PHMW(35-13), with advantages of sweet taste, non-astringent, thick flesh, fruit weight > 65 g, and fragrance Keywords: Salacca spp. , crossing, population, evaluation, selection Share Link | Plain Format | Corresponding Author (Sri Hadiati)

92	Agriculture Productivity	ABS-74
Study Of Combination Of Liquid Organic Waste On Antifungal Activity Bacillus sp. DB12 Asrul Agrotechnology Study Program, Faculty of Agriculture, University of Tadulako E-mail : asrul1203[at]gmail.com Abstract This study examines the ability of liquid organic waste carriers to increase the antifungal activity of the active ingredient Bacillus sp DB12, which has been stored for 12 weeks against the pathogen Fusarium oxysporum f.sp. cepae. The research method was carried out in an experimental laboratory using a completely randomized design (CRD) with a single factor in the form of a liquid waste carrier consisting of 9 treatments. The composition of liquid tofu waste (LCT), coconut liquid waste (LCK), and rice washing liquid waste (LCB) was determined as follows: 100% LCT (A1), 75% LCT + 25% LCK (A2), 50% LCT + LCK 50% (A3), LCT 25% + LCK 75% (A4), LCK 100% (A5), LCT 75% + LCB 25% (A6), LCT 50% + LCB 50% (A7), LCT 25% + 75% LCB (A8), and 100% LCB (A9). The results showed that the combination of 75% LCT + 25% LCK carriers increased the antifungal activity of Bacillus sp. DB12 compared to other carrier combinations. An increase in antifungal activity was indicated by an inhibition zone diameter of 13.03 mm during 12 weeks of storage. Keywords: Keywords: organic wastewater, antifungal, Bacillus sp DB12, Fusarium oxysporum f.sp. cepae Share Link | Plain Format | Corresponding Author (Asrul -)

93	Agriculture Productivity	ABS-75
The effect of sodium trimetaphosphate on the physical and functional charateristics of banggai yam starch R Chaniago, A Hasanuddin, S Kadir, A Rahim 1 Student of the Doctoral Program in Agricultural Sciences, Postgraduate Agriculture, Tadulako University 2 Lecturer Staff of the Animal Husbandry Study Program, Faculty of Animal Husbandry and Fisheries, Tadulako University 3 Lecturer Staff of the Agrotechnology Study Program, Faculty of Agriculture, Tadulako University Abstract Banggai yam starch as well as other types of starch is known to have physical and chemical properties which cause the use of starch in the limited reliability industry. Therefore, it is necessary to improve physical properties by modifying the proud yam starch by phosphorylation. Research to determine the sodium trimetaphosphate (STMP) concentration wihc gives the best tendency in the modification of proud yam starch by phosphorylation based on its physical and functional characteristics. Research uses a completely randomized design one factor consisting of a concentration of STMP 2, 4, 6, 8, 10, 12% and native starch as a comparison. Observation parameters include emulsion separator volume, viscosity, water holding capacity (WHC), oil holding capacity (OHC), swelling power, and solubility. The results showed that the emulsion separator volume, WHC, swelling power, and solubility starch modification is smaller than native banggai yam starch, while at viscosity starch modification is greater than native banggai yam starch. In the analysis OHC fluctuates as concentration increases. The STMP concentration that gives the best tendency is 4%. The value generated at this concentration is emulsion separator volume 90%, viscosity 577cp, WHC 0.94g/g, OHC 2.84g/g, swelling power 4.60 g/g, and solubility 0.17%. Keywords: Banggai yam starch, phosphorylation, sodium trimetaphosphate Share Link | Plain Format | Corresponding Author (Abdul Rahim)

94	Agriculture Productivity	ABS-76
The Effect of Lutein on Egg Components S Mozin*, U Hatta, S Sarjuni, and A Adjis Department Animal Husbandry, Faculty of Animal Husbandry and Fishery, Tadulako University, Indonesia Abstract The Effect of Lutein on Egg Components S Mozin*, U Hatta, S Sarjuni, and M A Adjis Department Animal Husbandry, Faculty of Animal Husbandry and Fishery, Tadulako University, Indonesia *Email: smozinfapetkan@gmail.com Canthaxanthin and cryptoxanthin are red pigments, while lutein and zeaxanthin are yellow pigments that give the yolk its yellow hue. This study aimed to analyze the composition of chicken eggs from diets containing varying amounts of lutein. A total of 120 20-week-old laying hens were used in this study. Rations without lutein, 20 ppm, 40 ppm, 60 ppm, and 80 ppm of lutein, were all tested as treatments. The research data were examined using a completely random design, with eight repetitions of each treatment. Chickens were housed in cages that had feeding and drinking equipment. The weight of the egg, eggshell, yolk, and albumen were the parameters measured. The results showed that treatment of dietary lutein levels significantly affected egg weight and eggshell weight (P<0.01) but did not significantly affect (P > 0.05) the other components (yolk and egg albumin weights). This study concludes that adding lutein to the diet of laying hens up to 80 ppm increases egg weight despite producing relatively equal amounts of albumen and yolk. Keywords: Egg components, Laying hens, and Lutein Keywords: Keywords: Egg components, Laying hens, and Lutein Share Link | Plain Format | Corresponding Author (Selvy Mozin)

95	Agriculture Productivity	ABS-80
Please Just Try to Submit This Sample AbstractEffect of Planting Media Composition and Watering Time Interval on Sambiloto Growth Please Just Try to Submit Bambang Pujiasmanto1, Eddy Triharyanto1, Puji Harsono1, Pardono1, Dina Mardiyana1, ,Desy Setyaningrum2This Sample Abstract 1 Department of Agrotechnology, Faculty of Agriculture, Universitas Sebelas Maret, Surakarta, Indonesia 2 Department of Agribusiness, Vocational School, Universitas Sebelas Maret, Surakarta, Indonesia Abstract Please Just Try to Submit This Sample Abstract You Can Edit It Again Later Sambiloto contains andrographolid which can increase the body^s immune system. The demand for sambiloto in Indonesia has increased, but is not matched by production efforts. The fulfillment of the need for sambiloto still depends on side cultivation and harvesting from nature, so that it will reduce the availability of germplasm. This study aims to obtain the composition of planting media, watering time intervals, and the right interaction as a technology innovation for bitter cultivation. The experiment used a factorial completely randomized design with two treatments. The first factor is the composition of the growing media soil, soil and cow manure, soil and vermicompost, and soil and goat manure. The second factor is the treatment of watering intervals every 3 days and every 4 days. The results showed that there was no interaction between the composition of the growing media and the watering time interval. Soil media and vermicompost gave the best results on plant height, number of leaves, number of primary branches, fresh and dry weight of plants, and andrographolid content. Watering every 3 and 4 days gave the same effect on the growth of bitter. The highest andrographolid (8.03%) was produced by soil media and vermicompost fertilizer. Keywords: andrographolid, planting media, organic fertilizer Share Link | Plain Format | Corresponding Author (Bambang Pujiasmanto)

96	Agriculture Productivity	ABS-85
Antifeedant and toxicity effect of Citronella Essential Oil against Spodoptera frugiperda J.E Smith Larvae Shahabuddin Saleh (1*), Flora Pasaru (1), Moh. Hibban Toana (1), Hasriyanty (1), Muh. Syair (2), Arum S. Wangi (2) 1) Agrotecnology Study Program, Agriculture Faculty, Tadulako University, Palu, 94118 Indonesia *shahabsaleh[at]gmail.com 2) Student of Agrotecnology Study Program, Agriculture Faculty, Tadulako University, Palu, 94118 Indonesia Abstract Maize cultivation in Indonesia is under threat from a new invasive pest, namely Spodoptera frugiperda or Fall armyworm (FAW). The use of botanical insecticides is one that is recommended for controlling this pest because it is environmentally friendly. This study aims to evaluate the feeding inhibition and toxicity of Cymbopogon nardus or citronella essential oil (CEO) on the FAW larvae. The CEO with different concentrations: 5%, 10%, 15%, and 20% effect, control was tested on the third instar FAW larvae at the Plant Protection Laboratory of Tadulako University. The feeding inhibition was tested using the choice method. The larval mortality was observed at 24, 36, 48, and 72 hours after treatment then perform the probit analysis to determine its toxicity. Furthermore, observations were made on the morphology and development of the larvae until they became pupae. The results revealed that CEO has low antifeedant activity but it has high toxicity to FAW larvae as indicated by the increasing larval mortality and reduction in larval survival until pupae following the increase of CEO concentration. This study indicates that citronella oil has a high larvicidal effect and potentially use as a botanical insecticide for FAW control. Keywords: botanical insecticide, lemongrass oil, invasive pest, maize Share Link | Plain Format | Corresponding Author (Shahabuddin Saleh)

97	Agriculture Productivity	ABS-86
The Granular compost and inorganic fertilizer to Ultisol on soil physical characteristics and Maize (Zea mays L.) Crop Yield Maimuna La Habi(1), Martha Amba(1), Jeanne. I. Nendissa (1), Rudy Soplanit (1),Budi Prasetya(2) (1)Department of Agriculture, Pattimura University, Jl. Ir. M. Putuuhenna 97233, Kampus Poka - Ambon, Indonesia) (2)Department of Agriculture, Brawijaya University, Jl. Veteran Malang 65145, Indonesia Abstract The study aimed to determine the granular compost and inorganic fertilizer to Inceptisol on soil physical characteristics and Maize Crop yield. The research design used in the study was a randomized block design with three replications. Treatment consisted of no fertilizer (KGS1), with granular compost 8 ton per ha (KGS2), inorganic fertilizer (Urea, SP36, and KCl), recommended dosage (KGS3), inorganic fertilizer plus granular compost 8 ton per ha (KGS4), a half dose of inorganic fertilizer plus granular compost (8 ton ha) (KGS5), 2 doses of inorganic fertilizer plus granular compost 8 ton ha (KGS6), ), a half dose of inorganic fertilizer plus 12 ton per ha granular compost (KGS7) and 2 times the dose of inorganic fertilizer plus 4 ton per ha compost (KGS8). The result showed granular compost (KGS7) and inorganic fertilizer significantly affect the physical characteristic of the soil that is categorized into heavy volume of soil, soil particle dencity, soil porosity fast drainage pore, available water pore and unavailable water pore. On the other hand, the plant growth and dry shelled corn grain results amounted to 249.18 cm and 7.88 tones per ha. Excessive inorganic fertilizer did not show the significant increase of dry shelled maize corn yield. Based on these results, the reduction of half dose of inorganic combined with 12 ton per ha granular compost yielded of dry shelled corn grain of the highest (7.88 ton per ha) or in percentage the increase of the result of 35 per cent inorganic fertilizer application. Keywords: Granular compost, inorganic fertilizer, Maize Share Link | Plain Format | Corresponding Author (Dr. Maimuna La Habi, SP, MP La Hai)

98	Agriculture Productivity	ABS-89
Soil Physical Characteristic in Several Land Uses in Ujung Tibu Village, West Tojo District, Tojo Una-Una Regency Abdul Rahman, Rully Akbar Pribadi Djalalembah, Danang Widjajanto, Bunga Elim Somba, Jihan Fahira S. Lelatu. Soil Science Laboratory, Agriculture Faculty of Tadulako University, Palu, Indonesia Abstract Besides functioning as a place for the growth and development of roots, the soil provides water, air, and plant nutrition. This study aimed to determine the criteria for soil physical characteristics for several land uses in Ujung Tibu Village, West Tojo District, and Tojo Una-Una Regency. The research was conducted through several stages: preparation, soil sampling, soil analysis in the laboratory, data analysis, and report writing. The results showed that the physical properties of the soil in clove plantations had moderate permeability criteria, soil porosity was classified as poor, soil texture was dominated by silty clay, and bulk density was classified as medium-heavy. Mixed plantation land uses moderate soil permeability, poor-moderate porosity, the texture of silty loam-sandy loam, and medium bulk density. Forest land use has medium permeability, poor soil porosity, silty clay-silt soil texture, and moderate bulk density. Keywords: land use, soil physical properties, agricultural cultivation Share Link | Plain Format | Corresponding Author (Abdul Rahman Rahman)

99	Agriculture Productivity	ABS-90
Testing Of Sprouting, Genetic Diversity and Heitability Of Some Local Gogo Rice Cultivers Sakka Samudin(1), Maemunah(1), Yusran(2 )Dan Mustakim(3) 1Department of Agrotechnology, Faculty of Agriculture, Tadulako University, Tondo-Palu 94118, Central Sulawesi, Indonesia. 2Laboratory of seed and Science Agriculture Faculty, Universitas Tadulako, Palu-Center Sulawesi 3)Department of agricultural product technology, Asis Lamajido University, Palu Abstract Seeds are the beginning of plant life, for this reason the use of quality and quality seeds and having superior genetic traits are needed to support the growth and development of plants to be better and provide maximum production. The purpose of this study is to obtain local upland rice cultivars that have quality seeds and quality with the best germination and traits that have superior genetic. This research was carried out at the Seed Science and Technology Laboratory, Faculty of Agriculture, Tadulako University. When the study began in November to December 2019. This study was compiled using a Completely Randomized Design (CRD) with seven cultivars as treatments namely, Pulu tau leru, Pulu Konta, Delima, Buncaili, Jahara, Uva buya and Pae Bohe. Each treatment was repeated four times. The parameters observed were, maximum growth potential, germination capacity, germination time, and dry weight of sprouts. The results showed that the Uva buya cultivar had the best germination because it produced the maximum growth potential (100.00%) and the best germination (99.50%) and the faster germination time (2.03 days). Dry weight of sprouts is a trait that has good genetic character because it has a high heritability value (91.28%). Keywords: Sprouts, Upland Rice, and Genetic Parameters Share Link | Plain Format | Corresponding Author (Sakka Samudin)

100	Agriculture Productivity	ABS-93
Tropic soil properties and productivity of shallot lembah palu variety A R Thaha *1) B E Somba1) D Sartika1) St Sukmawati2) 1 Lecturer of Agrotecnology of Faculty Agriculture, Tadulako University, In Palu. 2 Laboratory staf of Agrotecnology of Faculty Agriculture, Tadulako University, In Palu. Abstract This study aims to obtain a comprehensive description of soil properties in the development area of shallot lembah palu variety as a basis for soil management to increase the productivity which is still relatively low (average 4 ton ha-1). The first phase of the research was conducted using the survey method in the main development areas, including Tondo village (Watutela hamlet), Guntarano 1 and Guntarano 2 villages, Taipa village, Tanamodindi village, Paboya village and Kawatuna village. Soil sampling on a relatively flat topography with a depth of 20 cm was carried out systematically with a grid system. Each location consisted of 6 composite soil samples. Thus, there were 7 composite soil samples for laboratory analysis. Data on soil and crop management by farmers were collected using a questionnaire. The second phase of the research aimed to engineer low levels of soil organic matter and potassium through field experiments, using a 2-factor factorial experiment. The first factor is the dose of chicken manure 10 tons ha-1 (O1) and 15 tons ha-1 (O2) while the second factor is 48 kg S ha-1 (H1), 72 kg S ha-1 (H2), 100 kg KCl ha-1 (H3), and 200 kg KCl ha-1 (H4). The results showed that soil texture was dominated by sand and dust fractions at all locations ranging from 64-89%, soil clay content ranged from 11-36%. Soil C-organic content was very low to low (0.67-1.79%), soil N-total was very low to low (0.04-0.16%), soil pH was slightly acidic to slightly alkaline (6.3-7.9), available P2O5 levels (Bray 1/Olsen) varied from very low to moderate (2.7-15.3 ppm) except Tanamodindi (77.0 ppm). Available K2O levels (Morgan) were generally low ranging from (4.29-10.12 cmol (+) kg-1) except Tanamodindi and Poboya which were high. Soil CEC was generally low (10.70-16.08 cmol (+) kg-1) except Tondo and Poboya villages, while soil base saturation was low (25.13-45.68%). The results of the field experiment showed that the simple effect between organic fertilizers and inorganic fertilizers was the same (interaction had no significant effect). The application of organic materials equivalent to 15 tons ha-1 produced fresh tuber weight of 10.94 tons ha-1 (O2), significantly higher than the application of 10 tons ha-1 which produced fresh tuber weight of 9.67 tons ha-1 (O1). The use of KCl fertilizer at a dose of 200 kg ha-1 produced fresh tuber weight of 12.35 tons ha-1 (H4), significantly higher than 100 kg KCl ha-1 (H3), 72 kg S ha-1 (H2) and 48 kg KCl ha-1 (H1). Keywords: Soil properties, productivity, lembah palu variety, organic fertilizer, and inorganic fertilizer Share Link | Plain Format | Corresponding Author (Abdul Rahim Thaha)

101	Agriculture Productivity	ABS-94
Forest Conversion to Agricultural Lands: Impact on Soil Physical Characteristics Uswah Hasanah (a*), Al Adawiah Amami (a), Rachmat Zainuddin (a), Bunga Elim Somba (a), Rezi Amelia (a) a) Department of Agrotechnology, Tadulako University Jl. Soekarno Hatta No.KM. 9, Palu 94148, Indonesia *uswahmughni[at]yahoo.co.id Abstract Forest conversion to other land uses particularly for agricultural purposes had been widespread globally including Indonesia. Removal of the forest cover exposes its organic matter to harsher climatic condition declining soil physical characteristics. This paper discusses changes in several soil physical characteristics when forest was converted into agricultural cultivation i.e. fallow (shrubs), wetland rice, cacao, durian, and avocado land uses. Undisturbed and disturbed soil samples were taken from each land use and analyzed for texture, soil organic carbon (C), soil bulk density, and hydraulic conductivity. All land uses had sandy loam texture except silty loam in wetland rice. The forests had the highest C-organic content (4.70%) whereas the others contained less than halve (<2.01%) of that in the forest land. Bulk density in the forest soil was less than 1.00 g cm-3 while the others ranged between 1.53 g cm-3 to 1.75 g cm-3. The lowest soil permeability was found in the avocado plantation (0.18 cm h-1) and the highest in the forests (9.46 cm h-1), while the others ranged from 2.03-2.47 cm/hour. This study demonstrates that the physical qualities of the soil significantly deteriorated after forests were converted to agricultural lands. Keywords: Agriculture, C-organic, forest, soil physical characteristics Share Link | Plain Format | Corresponding Author (Uswah Hasanah Hasanah)

102	Agriculture Productivity	ABS-100
Combination of recommended macro fertilizers and solid organic fertilizers for sweet corn on medium land in Inceptisol soil types. E. Fidiyawati1, R. Asnita2, A. Prayitno2, G. A. Sadewo2, R.N.B. Soerjandono2, T. A. Ratnawati2, C. Hermanto1, and D. Setyorini1* 1) National Research and Innovation Agency (BRIN) Cibinong Science Centre Bogor-West Java Indonesia 2) Standarisation and Agriculture Instroment Agency (BSIP) Jl. Raya Karangploso Km 4 Malang-East Java Indonesia * correspondence: rinibptpjatim[at]gmail.com Abstract One of the horticulture products in Indonesia with a large market potential is sweetcorn, which is greatly influenced by the amount of organic matter at the planting site. The study was carried out in the IP2TP BSIP Malang, from March to July 2022. ANOVA was performed for data analysis using a fully randomized design (RBD) with 9 treatments and 3 replicates, and when there were discrepancies in the results, a DMRT analysis was conducted at a 5% level of confidence. This study aimed to ascertain how organic fertilizer affected sweetcorn yield and growth. The findings demonstrated that treatments variable plant height and leaf count had the highest values. The best results for diameter and cob length were obtained in treatment I with a combination of 1,000 kg/ha of organic fertilizer, 750 kg/ha, and 500 kg/ha, which is one recommended dose of NPK plus 500 kg/ha. In comparison to the control treatment, all treatments with the addition of organic fertilizer demonstrated significant improvements in sweet corn production per hectare. The B/C ratio value of 2.86 supports these findings, demonstrating that the maize production per ha is a plant treated with 1 recommended dose of NPK + organic fertilizer at 500 kg/ha. Keywords: organic fertilizer, growth, yield, sweetcorn Share Link | Plain Format | Corresponding Author (Eni Fidiyawati)

103	Agriculture Productivity	ABS-101
Influence of Toposequence on Soil Quality of Sugar Cane Plantation Areas in Bombana Regency, Indonesia Aprilia Herniyanti(a), Darwis Suleman(a*), Namriah (a), Sahta Ginting(a), Syamsu Alam(a), Dewi Nurhayati Yusuf (a), Resman (a) a)Department of Soil Science, Halu Oleo University, Kendari 93232 *Email: darwis_suleman[at]yahoo.com Abstract The intensive land use across the toposequence of sugarcane plantation has the potential to reduce soil quality, particularly due to the hazardous effect of erosion. Therefore, it is necessary to periodically evaluate the physical and chemical properties of the soil. The study was performed on Inceptisol in a sugarcane plantation area and aimed to investigate the effect of topography on soil quality. The soils sample were taken across the physiographic position (i.e., upper, middle and bottom) of the study area. Nine soil samples were collected at 0-20cm depth, then composited into three samples according to the toposequence and analyzed using standard procedures. Among all the soil properties, texture, pH, organic-C, total-N, available P and K were varied along the toposequence. It was observed a moderate soil quality index (SQI) at the bottom and upper of study site with a value of 0.54 and 0.44, respectively. Meanwhile, the low SQI was noted at middle (0.36). In the present study, the most crucial factors determining the variation in SQI were the soil texture, organic-C and soil pH. The finding suggest the need of appropriate land use strategies and sustainable soil management practices to improve soil conditions in sugarcane plantation areas. Keywords: erosion, land management, organic-C, slope gradient Share Link | Plain Format | Corresponding Author (Darwis Suleman)

104	Agriculture Productivity	ABS-102
Growth and yield of three high-yielding varieties of lowland rice as affected by application of inorganic fertilizers Darwis Suleman(*a), Hamirul Hadini(b), Didik Raharjo(c), Syamsu Alam(a), Dewi Nurhayati Yusuf(a) a) Department of Soil Science, Halu Oleo University, Kendari 93232 b) Department of Agrotechnology, Halu Oleo University, Kendari 93232 c) Assessment Institute of Agricultural Technology, Kendari 93114 *Email: darwis_suleman[at]yahoo.com Abstract Currently, the need for rice in Indonesia increases linearly along with the soaring of population. However, the rice production tends to be levelling-off. This study evaluated the yield potential of three lowland rice varieties under different rate of fertilizer. The varieties of Mekongga, Ciherang and Inpari30 sub1 were grown under five fertilizer treatments: 90 %, 100 % served as a control, 110 %, 115 %, and 120 % of recommended rate with three replications and laid out in a factorial block design. The study was located in a silty loam and irrigated soil. ANOVA was applied and followed by a Tukey test at a 5 % level. Among three varieties, Mekongga and Inpari-30 sub1 produced more yield than Ciherang by 6.71 and 6.77 t ha-1, respectively. Increasing the rate of fertilizers caused the increase of the yield significantly. The highest grain yield was recorded by the application of 120 % of recommended rate by 7.82 t ha-1. Fertilizer rate was positively correlated with grain yield (r=0.97). Our result suggest the importance of cropping system pattern to prevent the soaring of harmful attacks of pest and disease and the evaluation of fertilizer recommendation that had been used a dozen consecutive years. Keywords: mekongga, soil fertility, paddy field Share Link | Plain Format | Corresponding Author (Darwis Suleman)

105	Agriculture Productivity	ABS-103
Improvement of growth and yield of several varieties of soybean following paddy rice using Rhizobium biofertilizer with reduced NPK doses Wayan Wangiyana, Dian Febriana Arianti, I Ketut Ngawit University of Mataram Abstract In paddy fields, soybean is generally planted following harvest of the rainy season paddy rice or after the second paddy, and the average yield achieved by farmers is still relatively low. This study aimed to examine the effect of applying Rhizobium biofertilizer with a reduced dose of NPK fertilizer on growth and yield of soybean grown following flooded rice crop. The experiment was carried out on farmers^ paddy fields in Masbagik, East Lombok (Indonesia) from August to November 2020, which was arranged according to a Randomized Block Design, consisting of two treatment factors, namely soybean varieties (V1= Anjasmoro, V2= Grobogan, V3= Biosoy-2) and biofertilizers (P0= without biofertilizer (recommended dose of NPK), P1= 50% NPK dose + Rhizobium). The results showed that the application of Rhizobium biofertilizer did not significantly increase growth and yield of soybean except for the weight of 100 grains, but there was an interaction effect of the treatment factors on trifoliate number 35 DAP, pod number 56 DAP, unfilled pod number, grain yield, weight of 100 grains and harvest index, showing that grain yields of Grobogan (2.03 tons/ha) and Biosoy-2 (2.31 tons/ha) were significantly higher with application of the biofertilizer while that of Anjasmoro variety (2.83 tons/ha) was higher under recommended doses of NPK fertilization. However, in general it can be concluded that the dose of NPK fertilizer can be reduced by 50% from the recommended dose if it is accompanied by application of Rhizobium biofertilizer. Keywords: Soybean- biofertilizer- Rhizobium- Reduced NPK Share Link | Plain Format | Corresponding Author (Wayan Wangiyana)

106	Agriculture Productivity	ABS-107
Rice Growth and Yield response to Catfish Population and Organic Media Composition in Aquaculture-Hydroponic Systems Henry Barus(1), Muhardi(1), Mareskyna(1) 1) Agrotechnologi Department of Agriculture Faculty, University of Tadulako Jl.Soekarno-Hatta Km 9, Tondo-Palu 94118, Sulawesi Tengah. Telp. 0451-429738 Abstract Aquatic animals and plants have been used for integration of aquaculture with hydroponic system by applying various designs. The plant nutrients were properly managed for the integration of aquaculture with hydroponics by using closed as well as recirculating system. Both Paddy rice and catfish are common Cultivated by farmer in Indonesia. However, integrating Padi Rice and Catfish using aquaculture-hydroponic systems rarely focused based on research. These research was carried out in the fish pond of the Agriculture Faculty, Tadulako University. It was carried out in the form of an experimental design using the split-plot method consisting of 2 (two) factors. The first factor as the main plot is the catfish population density- K0 (control), K1 (150 population/m3), K2 (300 population/m3) and K3 (450 population/m3). The second factor as a sub-plot is the ratio of organic media composition between husk charcoal and compost- M1 (1:1), M2 (1:2) and M3 (1:3). The results showed that the rice growth and yield increased linearly with increasing catfish population combined with more amount of compost media (K3M3). The Integration of Rice hydroponics system with catfish cultured in Aquaculture could be applied in integrated farming system Keywords: Rice, Catfish, husk carcoal, compost, and Aquaculture and Hydroponic Share Link | Plain Format | Corresponding Author (Henry Barus)

107	Agriculture Productivity	ABS-108
GC-MS Metabolomic Profiling of Garcinia intermedia Leaf with Several Sample Drying Methods Tri Budiyanti, Winda Nawfetrias, Sri Hadiati, Riska, Jumjunidang, NLP. Indriyani, Ellina Mansyah, R Reninta and ED Husada Research Center for Horticultural and Crops, Cibinong Science Center, National Research and Innovation Agency (BRIN), Research Centre for Genetic Engineering, National Research and Innovation Agency (BRIN), Research Centre for Applied Microbiology, National Research and Innovation Agency (BRIN). Abstract Garcinia intermedia, commonly called cherry mangosteen or lemon drop mangosteen, originates from Mexico and Central America. This plant is not cultivated in Indonesia because the fruit is less tasty than mangosteen (Garcinia mangoestana). Information about the metabolome content in Garcinia intermedia needs to be known to increase its commercial use. Several studies have shown that this species has anti-microbial content that benefits health. This study aims to perform metabolomics profiling in the leaves of Garcinia intermedia using 3 (three) treatments of leaf drying methods: freeze drying, oven, and wind drying via Gas Chromatography-Mass Spectrophotometry (GC-MS). The study^s results identified 60 volatile compounds found in the leaves of Garcinia intermedia. Samples dried using the Freeze Drying method and drying at room temperature (wind dried) could identify 46 compounds, while samples dried by the oven could identify 32 compounds. The results also showed volatile compounds at the highest peaks from the GC-MS analysis, namely Caryophyllene, Gamma Muurolene, Naphthalene, Octadecane, delta.-Tocopherol, and Friedelan-3-one. These compounds are helpful for antioxidants, anti-inflammatories, and vitamin E, which can benefit health. Keywords: Garcinia intermedia, metabolomic, leaf, GC-MS Share Link | Plain Format | Corresponding Author (Tri Budiyanti Budiyanti)

108	Agriculture Productivity	ABS-112
Increasing yield of several varieties of zero-tillage sorghum through additive intercropping with soybean on permanent raised-beds Wayan Wangiyana, Siti Zainab, Baharuddin University of Mataram (Wayan Wangiyana) University of 45 Mataram (Siti Zainab & Baharuddin) Abstract Sorghum is getting popular because of its potential for use as food ingredients, feed, and bio-ethanol production. However, there are competing interests for growing this crop because rice and maize are two most important crops in Indonesia, so intercropping could be a solution. This study aimed to examine the effects of additive intercropping several varieties of sorghum with soybean grown during a dry season on permanent raised-beds mostly used to grow rice. The experiment was carried out on farmers^ paddy fields in West Lombok (Indonesia) from June to September 2022, which was arranged according to Split Plot design, consisting of two treatment factors, namely sorghum varieties (V1= Numbu, V2= Samurai-1, V3= Super-1) and intercropping (I0= monocropped sorghum, I1= additive intercropping with soybean). The results indicated that additive intercropping by relay-planting one row of soybean between rows of sorghum significantly increased growth and yield of sorghum but sorghum varieties showed significant differences only in weight of 100 grains. However, there was a significant interaction effect on leaf number prior to anthesis and seed filling stage and growth rate of leaf number. Among the varieties, Numbu showed a significant and the highest increase (16.09%, equivalent to 363 kg/ha) in dry grain yield due to additive intercropping with soybean. Keywords: Sorghum- zero tillage- additive intercropping- soybean Share Link | Plain Format | Corresponding Author (Wayan Wangiyana)

109	Agriculture Productivity	ABS-115
STUDY OF NIRA PRODUCTIVITY BASED ON THE LEVEL OF MALAI ON AREN (Arenga pinnata Merr) Dharma Gyta Sari Harahap1, Ferry Irawan2, Muh.Rafi^y3, Sri hanipa4 , Darmadi Erwin Harahap5 , Mizan Maulana6 1234 Early Childhood Education Teacher Education Faculty of Teacher and Education Universitas Musamus, Merauke 5Agrotechnology, Faculty of Science and Technology, Universitas Muhammadiyah Tapanuli Selatan 6Science Agriculture, Universiytas Islam Kebangsaan Indonesia, Aceh Abstract This research was conducted in Aek Nabara village, Marancar district, South Tapanuli regency. This study aims to determine the production based on panicle level. Plant samples were taken from panicle level 1, panicle level 2, panicle level 3, panicle level 4, panicle level 5, panicle level 6, panicle level 7, panicle level 8, panicle level 9, and panicle level 11. From the results of the linear regression equation that the panicle level has a negative effect on the production, meaning that the higher the panicle level, the lower the production of juice and sugar . The highest sap production was found at the 6 panicle level (4,48 liters) and the lowest sap production was found at the 2 panicle level (1,04 liters). While the highest sugar production was found at the 6 panicle level (0,54 kilograms) and the lowest sugar production was found at the 11 panicle level (0,14 kilograms). Keywords: sugar palm, panicle level, productivity. Share Link | Plain Format | Corresponding Author (Dharma Gyta Sari Harahap Harahap)

110	Agriculture Productivity	ABS-117
Cultivation and Culture of Dioscorea esculenta in Papua Arif Susila 1*, Vina Eka Aristya 2, Mariana Ondikeleuw 2, Afrizal Malik 3 , Intan Gilang Cempaka 1 1 Research Center for Horticultural and Estate Crops, National Research and Innovation Agency, Jl. Raya Jakarta-Bogor, Cibinong, Kabupaten Bogor 16915, West Java, Indonesia 2 Research Center for Food Crop, Research Organization of Agriculture and Food, National Research and Innovation Agency, Cibinong Science Center-Botanical Garden, Jl. Raya Jakarta-Bogor Km. 46, Cibinong, Bogor, Indonesia 16911 3 Research Center for Circular Economics, National Research and Innovation Agency, Jl. Jenderal Gator Subroto No. 10, South Jakarta, Indonesia 12710 *Email:arifsusilamgl[at]gmail.com Abstract The study of cultivation and culture of Dioscorea esculenta (gembili) in the Papua Province of ethnobotany was carried out in Jayapura districts (Yoka and Yongsu villages) and Merauke districts (Yanggandur and Sota villages). These sites were the gembili development center in Papua. The data collected includes socio-cultural, local wisdom, its contribution to the economy of farmer households, and the environment for growing gembili. The research results identified two types of gembili in Jayapura, by the community known as Yara (11 accessions) and Fam (5 accessions), also 30 accessions of local gembili in Merauke. Gembili has a strategic role in the customs and culture of the indigenous tribes in Papua. The gembili germplasm needs to be utilized and developed. Keywords: Dioscorea esculenta, identification, characterization, Papua Share Link | Plain Format | Corresponding Author (Arif Susila)

111	Agriculture Productivity	ABS-118
Effects of noni leaf (Morinda citrifolia) extract on performance and egg quality of laying quail (Coturnix coturnix japonica) Asriani Hasanuddin, Rusdi Rusdi, Mulyati Mulyati, Fatmawati Fatmawati, Sri Sarjuni, Moh Basri, Mustafa and Ritha Rahayu Mashudie Universitas Tadulako Palu, INDONESIA Abstract Synthetic antibiotics are prohibited used in the animal diets, due to the negative impact on the intestinal microbiota and its residues in products can harm consumers. Many studies have been conducted to generate alternative feed additives, one category of supplementary feed is phytobiotics. Phytobiotics are derived from plants that have phytochemical elements and may elevate the performance of livestock by interfering the intestinal microbiota ecosystem, improving secretion of enzyme, developing intestine morphology and allowing improvement of nutrients absorption and therefore it is improving livestock health. The goals of study is to investigate the effects of using noni leaf extract (MC) on performance and egg quality. A hundred and sixty of laying quail, 12 weeks old, were randomly placed on five treatments and five replicates in eight birds per replicate. They were kept according to the standard management for seven weeks. The diat ingredients were corn, rice bran, soybean, fish meal, oil, minerals, methionine and lysine, mixed to achieve 20% of protein content. Treatments are basal diet only (M00), a basal diet+0.01% of MC (M01), a basal diet+0.02% of MC (M02), a basal diet+0.03% of MC (M03) and a basal diet +0.04% of MC (M04). Experimental diets and water were freely available. The variables are feed intake, daily egg production, FCR, and egg quality including egg weight, yolk index, albumin index, eggshell thickness and haugh unit (HU). Data were analyzed using ANOVA and the Duncan test for comparison. The results showed that inclusion of noni leaf extract in the diet had a non-significant effect on feed intake, daily egg production, and egg quality (P>0.05), but it improved eggshell thickness by 4.75% (P<0.05) and elevated HU value by 6.5% (P>0.05), and tended to improve FCR. In conclusion, addition of noni leaf extract (MC) in the diet may improve quail performance, and egg quality by enhancing the thickness of the eggshell. Keywords: phytobiotic, noni, laying, quail, egg quality Share Link | Plain Format | Corresponding Author (Asriani Hasanuddin)

112	Agriculture Productivity	ABS-119
The Effect of Intermittent Lighting and Enzyme Supplementation on Broiler Gastrointestinal Tract U Hatta1*, R Y Tantu1, S Mozin1, M A Adjis1 and Sarmuliamin2 Faculty of Animal Husbandry and Fishery, Tadulako University Abstract Abstract. Environmental elements, including light and temperature, are known to have an impact on broiler performance. Broilers are frequently given constant or nearly continuous illumination in various places. This study aimed to determine how broiler gastrointestinal growth was affected by intermittent lighting and enzyme supplementation. One hundred sixty-eight broilers that were 42 old were chosen and raised from 8 to 42 days under continuous lighting, intermittent lighting photoperiods of 18 hours of light and 6 hours of darkness, or 12 hours of light and 12 hours of darkness combination without and adding enzyme. Broiler body weight gain and gastrointestinal tract weight were unaffected by the interplay between intermittent light and the addition of enzymes. Keywords: Intermittent light, enzyme, the gastrointestinal tract of broiler Share Link | Plain Format | Corresponding Author (Ummiani Hatta)

113	Agriculture Productivity	ABS-120
EVALUATION OF NUTRIENT STATUS AND SOIL FERTILITY AND UTILIZATION OF LOCAL WEEDS AS ORGANIC FERTILIZER IN AGRICULTURAL LAND AFFECTED BY LIQUEFACTION NATURAL DISASTER Isrun Isrun Faculty of Agriculture, Tadulako University Abstract The 2018 earthquake and liquefaction natural disasters that affected several villages in Sigi Regency, Central Sulawesi, Indonesia, impacted land damage and had implications for the social and economic life of the local communities. This study aims to a) evaluate the nutrient status and fertility of degraded soils due to liquefaction, and b) identify weed species as a source of organic fertilizer and determine the need for fertilizer for sweet corn that can be developed to support increased farmers^ income. The research was carried out in two stages: field research regarding the evaluation of soil fertility status and determination of weed species for organic fertilizer, and fertilizer recommendations (phase I). The second phase involved testing organic fertilizer on sweet corn in a screen house. Each research stage took four months. The study^s first phase results identified 17 species of weeds with 11 species of low index class and six species of medium index class. Based on nutrient content, there were four locations with low fertility status, SPL1, SPL5, SPL6 and SPL7. In addition, there were three locations, SPL2, SPL3, and SPL4, with moderate fertility levels. In the study^s second phase, the highest pH H2O (6.38) was obtained at a dose of 25 tons per ha of Bokashi weed and 225 kg per ha of SP-36. This treatment was significantly different from other treatments. The highest available phosphorus was detected at a dose of 25 tons per ha of Bokashi weed 225 kg per ha of SP-36, namely 28.87 ppm, which was significantly different from other treatments. Moreover, there was an increase phosphorus uptake in plant due to the application of Bokashi fertilizer and SP-36 fertilizer. P uptake increased at a dose of 25 tones of Bokashi fertilizer per ha (P3) and SP-36 fertilizer dose of 225 kg per ha (S3) with an average of 0.68 g per plant. Keywords: nutrients, fertility, ameliorants, weeds, corn, liquefaction Share Link | Plain Format | Corresponding Author (Isrun Isrun)

114	Agriculture Productivity	ABS-122
The leaf rust disease development of hybrid corn on shaded agroecosystem Raden Heru Praptana (a*), Sodiq Jauhari (a), Samijan (a), Meinarti Norma Setiapermas (a) (a) Research Center for Food Crops, Research Organization for Agriculture and Food, National Research and Innovation Agency, Cibinong Science Center, Jl. Raya Jakarta-Bogor, KM 46, Cibinong, Bogor, West Java 16911, Indonesia Abstract The research objective was to determine the development of hybrid corn leaf rust disease in shaded agro-ecosystems. The research was carried out in the albasia forest area of Kalices Village, Patehan District, Kendal Regency, Central Java, Indonesia in March-September 2020. Three hybrid corn varieties, namely JH 37, Nasa 29 and Bisi 18, were used as treatments, as well as three levels of shade density, namely 0, 20 and 40%. Observations were made on the incidence and intensity of leaf rust disease at the age of 40, 60 and 80 days after planting (HST). The incidence and intensity of leaf rust disease were observed by scoring according to the modified 2012 DMRI method. The results showed that all three varieties had been attacked by leaf rust disease since 40 HST with an incidence of 13.33-56.67% and disease intensity between 12.59-17.41% at all levels of shade density. The leaf rust disease continues to develop in all varieties with an intensity of around 30.00-56.67%. The highest incidence and intensity of leaf rust disease occurred in JH 37 variety at all levels of shade density. The development of leaf rust disease is more influenced by the genetic characteristics of each variety Keywords: Leaf rust disease, hybrid maize, shaded land, disease incidence, disease intensity Share Link | Plain Format | Corresponding Author (Raden Heru Praptana)

115	Agriculture Productivity	ABS-123
Physicochemical and sensoris characteristics of edible films from phosphorylated arenga starches using sodium tripolyphospahate A Rahim*, Rostiati, Syahraeni Kadir, N Alam, Ilham Lecturer in the Agrotechnology Study Program, Faculty of Agriculture Tadulako University, Palu Student of the Agrotechnology Study Program, Faculty of Agriculture, Tadulako University, Palu Jl. Soekarno-Hatta Km 9, Tondo-Palu 94118, Central Sulawesi. Abstract Making of edible film from phosphorylated arenga starches using modification arenga starch using Sodium Trypolyphosphate. The research objective was to obtained the optimal concentration of phosphorylated arenga starches in the making of edible films with the best physicochemical and sensory characteristics. The research design consisted of a completely randomized design and a randomized block design with concentrations of phosphorylated arenga starches consisting of 7 levels, namely 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, and 5 % (b/v) with 3 repeted. The research variables include thickness, water absorption, oil absorption, water vapor transmission rate, and sensory. The results showed that the 5% concentration of phosphorylated arenga starches has been gave the best physicochemical and sensory characteristics of edible film. Edible film of thickness and oil absorption increased with increasing concentration of phosphorylated arenga starches. The water vapor transmission rate and water absorption decreased with increasing concentration of phosphorylated arenga starches while the organoleptic properties showed liking. Keywords: Phosphorylated arenga starches, edible film, physicochemical characteristics, sensory properties. Share Link | Plain Format | Corresponding Author (Abdul Rahim)

116	Agriculture Productivity	ABS-124
Effect of concentration of corm banana liquid organic fertilizer and dosage of Bokashi fertilizer on growth and yield of long bean (Vigna sinensis L.) Sri Anjar Lasmini (a*), Nur Hayati (a), Burhanuddin Haji Nasir (a), Gita Wahyuni (b) Faculty of Agriculture, Tadulako University Abstract This study aims to determine the effect of the concentration of corm banana liquid organic fertilizer and doses of chicken manure bokashi on the growth and yield of long bean plants. The research was conducted in Sidera Village Sigi Biromaru District, Sigi Regency, from October to December 2021. The study used a Factorial Randomized Block Design (RBD). The first factor was the concentration of corm banana liquid organic fertilizer, which consisted of four levels, namely P0 = without liquid organic fertilizer, P1 = 100 ml per L, P2 = 200 ml per L, and P3 = 300 ml per L. The second factor was the dose of bokashi chicken manure, which consisted of 3 levels, K1 = 15 tons per ha, K2 = 20 tons per ha, and K3 = 25 tons per ha. The results showed an interaction between corm banana liquid organic fertilizer and chicken manure bokashi. The treatment of corm banana liquid organic fertilizer at a concentration of 300 ml per L, and bokashi chicken manure at a dose of 25 tons per ha significantly affected plant height, number of leaves and number of pods. Keywords: Corm banana- Bokashi fertilizer- Chicken manure- Liquid organic fertilizer- Long beans Share Link | Plain Format | Corresponding Author (Sri Anjar Lasmini)

117	Agriculture Productivity	ABS-126
Agronomic And Economic Study of The Application of Some Rice Cropping Systems in Irrigation Rice Land Joko Pramono1, Anggi Sahru Romdon2 dan Endah Nurwahyuni3 1Research Center for Horticultural and Estate Crops - BRIN 2Research Center for Behavioral and Circular Economics - BRIN 3Research Center for Food Crops - BRIN Abstract The need for basic food continues to increase along with the increase in population. Efforts to increase the availability of food, especially rice, continue to be carried out by the government in various ways. One of the ways to increase rice productivity in Indonesia is to apply technological innovations of lowland rice planting systems in irrigated land. The development of the row legowo planting system aims to increase the plant population per unit area and the border effect, which is expected to have an impact on increasing rice yields. The research was conducted on farmers^ land through the On Farm Adaptive Research (OFAR) approach in Jebed utara Village, Taman District, Pemalang Regency during the dry season (DS II) involving 15 cooperative farmers. The study tested 5 varieties as the first factor and 3 cropping systems as the second factor. Factor I (V/Variety) consists of- V1: Inpari 10, V2: Inpari 19, V3: Inpari 20, V4: Situbagendit and V5: Inpago 5, while Factor II (S/planting system) consists of S1: Tile planting system, S1: Jajar legowo planting system 2:1 , and S3: Jajar Legowo Planting System 4:1. Randomized block factorial experimental design with 3 replications. Parameters observed included plant height at harvest, number of productive tillers, panicle length, percentage of pithy grains, 1000 grain weight, dry milled grain yield (t/ha) and economic components. The data collected were analyzed by analysis of variance and farm data were analyzed by descriptive analysis. The results showed that the consistent application of the jajar legowo cropping system could significantly increase rice productivity in all varieties tested. The highest grain yield was achieved for the Jajar legowo cropping system 2:1 (7.99 t ha-1) with an increase of 15.2% from the conventional system (control). The cropping system that gave the highest R/C ratio was the application of jajar legowo 2:1, then Jajar legowo 4:1 and the lowest was the conventional cropping system, respectively 2.32 > 2.17 > 2.10. The 2:1 jajar legowo cropping system provides the highest feasibility compared to other cropping systems Keywords: rice, production, cropping system Share Link | Plain Format | Corresponding Author (Anggi Sahru Romdon)

118	Agriculture Productivity	ABS-134
DEVELOPMENT OF CORN CROPS IN DRY LAND, DRY CLIMATE USING PANCA MANAGEMENT TECHNOLOGY IN SITUBONDO, EAST JAVAPlease Just Try to Submit This Sample Abstract Moh. Saeri (1*), Zainal Arifin (2), Chendy Tafakresnanto (2) (1*) Research Center for Circular Economics, National Research and Innovation Agency, BRIN Indonesia (2) Research Center for Horticultural and Estate Crops, National Research and Innovation Agency, BRIN Indonesia Abstract Abstract Dry climate dry land in various agro-ecosystems in East Java is quite extensive so that it has the potential as an area for growing corn. However, it has not been managed optimally, and has limited irrigation which only relies on rainfall with low soil fertility. Corn cultivation technology on dry land is available, but it is necessary to review the feasibility factors of socio-economic techniques in an efficient, inexpensive and easy to implement manner. With the main problems of limited water and low soil fertility, five land management techniques are needed, namely (a) water management, (b) nutrient management, (c) organic matter management, (d) soil amelioration and conservation and (e) crop integration livestock or institutions. Activities to develop dry climate dry land agriculture through the implementation of five land management technologies on corn plants along with research on superimposed planting systems, biocahar and irrigation as well as display of corn varieties and fertilization carried out during the dry season (MK 1) 2019 in Kandang Village, Kapongan District, Regency Situbondo in an area of 20 hectares gives effective results. Keywords: five land management technology, dry land with dry climate, Situbondo Share Link | Plain Format | Corresponding Author (Moh. Saeri)

119	Agriculture Productivity	ABS-136
Technical Efficiency of Irrigated and Non-Irrigated Rice Farming In West Java Dwi Rachmina, Nunung Kusnadi, Tursina Andita Putri, Triana Gita Dewi Bogor Agricultural University Abstract The development and management of irrigation are generally aimed at the needs of rice plants in rice fields in achieving rice self-sufficiency. West Java occupies the second-largest irrigated rice field in Indonesia. However, based on the condition of irrigated land in West Java, this study aims to analyze the technical efficiency of irrigated and non-irrigated rice farming in West Java. The analysis was performed using a stochastic frontier model. The results state that the production of rice farming in West Java is influenced by the area of land cultivated by farmers, the number of seeds, the elements of N, P, and K in non-organic fertilizers, and the number of workers outside the family. The average rice farming in West Java has been technically efficient. Irrigation has a positive effect on increasing the technical efficiency of rice farming in West Java. Rice farming in irrigated land is efficient while lowland rice farming in non-irrigated land is not efficient with an average level of technical efficiency of 69.4 percent. Moreover, other factors that affect the efficiency of rice farming in West Java are farmer age, formal education, non-formal education obtained by SLPTT, and quality of seeds used. Keywords: frontier, irrigation, rice farming, technical efficiency Share Link | Plain Format | Corresponding Author (Tursina Andita Putri)

120	Agriculture Productivity	ABS-137
Competitiveness of tomato (Lycopersicon esculentum Mill.) with weeds at various nitrogen doses and weed free periods S Laude Lecturer in the Agrotechnology Study Program, Faculty of Agriculture Tadulako University, Palu Jl. Soekarno-Hatta Km 9, Tondo-Palu 94118, Central Sulawesi. Abstract The research objectives were to determine the effect of nitrogen dose and weed-free period on the competitiveness of tomato plants with weeds. The research used 6 x 4 Factorial Randomized Group Design. The first factor was the weed-free period (P) which consisted of six levels, namely weeds during tomato growth (P0), weed-free two weeks after planting (P1), weed-free four weeks after planting. (P2), weed-free six weeks after planting (P3), weed-free eight weeks after planting (P4), and weed free until harvest (P5). The second factor was the dose of nitrogen (N) consisting of 4 levels, namely: without fertilization (N0), fertilizing 50 kg N ha-1 (N1), fertilizing 100 kg N ha-1(N2) and fertilizing 150 kg N ha-1 (N3). The variable of observation was analyzed univariately using the F test and continued with the (Student-Newman-Keul) SNK test with a test level of 0.05. The plants growth rate weeds were analyzed by regression in the form of a curve as a function of time to see the dynamics of weed growth. The amount of competition between weeds and tomatoes were done through the competition index value approach. The results showed that the was a change in the value of competition between tomato plants with weeds at each level of nitrogen dose and weed-free period, this change decreased with increasing nitrogen dose. The highest yield was obtained when weed-free during tomato growth, namely 25.88 tons ha-1 with a fertilizer dose of 100 kg ha-1. Keywords: Tomatoes, weeds, competitiveness, nitrogen dosage and weed free periode Share Link | Plain Format | Corresponding Author (Syamsuddin Laude)

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