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
