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.
