Effect of integrated use of NPKZn, FYM and bio-fertilizers on soil properties and performance of rice crop (Oryza sativa L.)

Abstract

A field experiment was conducted during 2016-17 to evaluate the influence of integrated use of NPKZn, FYM and bio-fertilizers on soil properties and performance of rice. The treatments were control (T1), 50% NPK Zn + FYM (10 t ha-1) (T2), 100% NPK Zn (T3), 50% NPK Zn + Bio-fertilizer (PSB+BGA) + FYM (10 t ha-1) (T4), 150% NPK Zn (T5) and FYM (10 t ha-1) + Bio-fertilizer (PSB+BGA) (T6). Application of 50% NPK Zn + Bio-fertilizer (PSB+BGA) + FYM (10 t ha-1) i.e. T4 significantly increased the growth and yield as well as soil fertility status as compared to chemical fertilizers alone. Significantly higher plant height, number of tillers plant-1, grain and straw yield of rice and soil properties in terms of organic carbon, available NPK and S were obtained with application of 50% NPK Zn + Bio-fertilizer (PSB+BGA) + FYM (10 t ha-1) (T4) in comparison to other treatments. Significantly higher NPKS uptake was also observed with application of 50% NPK Zn + Bio-fertilizer (PSB+BGA) + FYM (10 t ha-1) (T4). This experiment proved the superiority of integration between chemical fertilizer and bio-fertilizer over chemical fertilizer alone at all level of fertility.