The increase in maize yields using biological organic fertilizer

Abstract

Suliasih, Widawati S. 2015. The enhancement of corn yields using organic bio-fertilizer. Pros Sem Nas Masy Biodiv Indon 1 (1): 145-149. In order to study the effect of organic bio-fertilizer (POH) on the growth and yield of corn (Zea mays L.), an experiment has been carried out at the experimental farm of Microbiology-Research Center for Biology-LIPI, Cibinong. The study is aimed to obtain a suitable combination of fertilization for corns. The experiment was set as randomized block design (RBD) with 15 fertilization treatments, namely: (i) Control plant without fertilizer, (ii) Chaff chicken manure, (iii) Compost, (iv) Phosphate Solubilizing Bacteria (PSB ), (v) Azotobacter, (vi) Azospirillum, (vii) Rhizobium, (viii) PSB + Azotobacter, (ix) PSB +Azospirillum, (x) PSB + Rhizobium, (xi) PSB + chaff chicken manure, (xii) Nitrogen-Fixing Bacteria/NFB (Rhizobium, Azotobacter, Azospirillum) + chaff chicken manure, (xiii) PSB + NFB, (xiv) PSB + NFB+ chaff chicken manure, (xv) Compost + chicken manure. Each treatment was triplicate. The results showed that the use of organic bio-fertilizers increased grain yield and harvest index compared to control plants without fertilizers. Furthermore, using POH increased soil bacteria population after harvesting. The highest grain yield (907.2 grams), harvest index (58.15%), fosfomonoesterase activity and available P, was obtained by plants treated with bio-fertilizer plus organic fertilizer (PSB + NFB + chaff chicken manure).