Influence of Graded Levels of Phosphorus at Different Fertility Gradient on Soil Properties under Finger Millet- Maize Cropping System
2022
Chandrakala, M. | Murthy, Srinivasa | Sanjeev Kumar, C. A.
The influence of graded levels of phosphorus at different fertility gradient on soil properties was studied at Zonal Agricultural Research Station (ZARS), GKVK, UAS, Bengaluru under finger millet-maize cropping system. Five phosphorus fertility gradients viz., P0 (Very low), P1 (Low), P2 (Medium), P3 (High) and P4 (Very high) (< 15, 16-30, 31-45, 46-60 and > 60 kg P2O5 ha-1) were imposed. Results indicated that, availability of N, P, K, S, Mg, Mn, Cu content was higher in very high fertility strip, whereas the exchangeable Ca, DTPA-Fe and Zn were significantly higher in medium P fertility gradient strip. Combined application of manures and fertilizers resulted in relatively higher availability of nutrients as compared to inorganics alone. Further, there was a build-up of P in gradient strips with graded levels of P application.
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