Ecology, Environment and Conservation Paper

PREDICTION OF POST HARVEST SOIL TEST VALUES FOR FRENCH BEAN AND MAIZE IN FRENCH BEAN MAIZE SEQUENCE IN MOLLISOL

Poonam Gangola, Poonam Gautam, Sobaran Singh and Sarvesh Kumar

Abstract

Field experiment was conducted during 2013-14 to develop PHSTVs prediction equations adopting Inductive cum Targeted yield model (Ramamoorthy et al., 1967), on Mollisol of Pantnagar, with French bean – maize in sequence. The experiment was laid out in a fractional factorial design comprising twenty four treatments (21 fertilizer treatments + three controls). Using pre-sowing soil test values, fertilizer doses and grain yield and/or NPK uptake by the crop as independent variables and post-harvest soil test values as dependent variable, PHSTVs prediction equations were developed. Significant R2 values (>0.65) were recorded for prediction equations which showed that these equations could be used for the prediction of post-harvest KMnO4-N, Olsen-P and NH4OAc-K. Using the predicted post harvest soil test values of French bean and maize, soil test based fertilizer recommendation for desired yield targets of any succeeding crop could be prescribed.