Influence of Bioprotector with Microbial Inoculation on Green Pepper Yield and Improvement on Soil Nutrients Availability

The aim of the study is to evaluate the effectiveness of PK rock biofertilizer mixed with organic matter inoculated with diazotrophic bacteria (NPKB) and the bioprotector with fungi chitosan by Cunninghamella elegans (PNPK) on yield of green pepper (Capsicum annuum) and improvement in soil available nutrients. The experiment was carried out during March – August, 2011 in a factorial using eight fertilization treatments with and without chitosan application on leaves, with four replicates. The fertilizer treatments were: (1) NPKF soluble fertilizers applied in recommended rate - RR; (2) NPKB (50% RR); (3) NPKB (100% RR); (4) NPKB (150% RR); (5) NPKP (50% RR); (6) NPKP (100% RR); (7) NPKP (150% RR); (8) Control treatment (earthworm compound). The NPKB and NPKP increased green pepper yield especially when applied in the highest rate, reduced soil pH and increased positively total N, available P and K, exchangeable Ca and Mg. The study focus the potential of biofertilizer with free living diazotrophic bacteria (NPKB) and the bioprotector with fungi chitosan (NPKP) as alternative to NPK fertilization.