APPLICATIONS OF BIOFERTILIZER, AMELIORANT, NPK FERTILIZER ON NTOTAL, AVAILABLE P, GROWTH AND YIELD OF CORN PLANT IN INCEPTISOLS

Abstract

Biofertilizer is a single or consortia of microorganisms added into carrier and applied as a means to improve crop yield. This experiment aimeds to the interaction between N and P biofertilizer, ameliorant, compound NPK fertilizer application towards soil total-N, Available-P, and Bisi-2 corn yield grown on Pasir Banteng Inceptisols. This experiment was conducted in the experimental field in Pasir Banteng, Tanjungsari, Sumedang District, Randomized Block Design (RDB) experimental design consisted of various biofertilizer with ameliorant, combinations with 4 levels. The first factors were : a0: (control), a1:1.2 kg ha-1 N biofertilizer + 1.2 kg ha-1 P biofertilizer, a2:2000 kg ha-1 of ameliorant, a3:1.2 kg ha-1 N biofertilizer + 1.2 kg ha-1 P biofertilizer + 2000 kg ha-1 of ameliorant. The second factor was NPK dose with four levels (f1:100%, f2:80%, f3:60%, f4:40%). The total combination were 16 treatments combination and each combination was repeated three times. The results showed biofertilizer, ameliorant, with NPK fertilizer were increase plant height, N-Total soilcontent, cob weight without husk, and corn kernel weight per plant. The use of biofertilizers and ameliorant on corn grown in Pasir Banteng Inceptisols not been able to reduce the dose of NPK fertilizer is used.