JOURNAL of Soil Biology and Ecology

The influence of fertilizer dosage application, guided by soil testing and crop response, on the target yield in relation to the introduced native soil mesofauna

Author:N.G. KUMAR, T.G. AVINASH AND P. NIRMALA

Abstract :

The present field experiment was conducted at GKVK, UAS, Bengaluru, during the Kharif season. The experiment focused on the effects of applying inorganic fertilizers and farm yard manure based on the soil testing and crop response (STCR) on the introduced native soil mesofauna in the sunflower cropping system. The abundance of soil mesofauna was significantly high in the Package of practices with 62.26:67.92:62.64Kg NPK/ha+25t FYM/ha+2kg/plot mesofauna rich soil treatment (21.90 mesofauna /400 g soil) and was on par with STCR 30 q ha -1 Integrated (146.54:134.71:115.09 Kg NPK/ha +25t FYM/ha) +2 kg/plot mesofauna rich soil, STCR 25q ha -1 Integrated (102.51:33.02:83.02 Kg NPK/ha +25t FYM/ha)+2 kg/plot mesofauna rich soil), STCR 30 q ha -1 Integrated(146.54:134.71:115.09 Kg NPK/ha +25 t FYM/ha) + no mesofauna rich soil and STCR 30q ha -1 (156.60:122.01:111.32Kg NPK/ha )+ no mesofauna rich soil . The least soil mesofauna was documented in the control treatment without introduction of native soil mesofauna (15.30 mesofauna /400 g soil). Soil mesofauna was significantly more at 45 days after treatment and reduced at harvest stage.

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