Author(s): Devi Ram Sahu, MK Pradhan, ML Lakhera, Gayatri Chandrakar, BL Sinha and Hulas Pathak

Abstract: The present study of the analysis of fertilizer consumption trends and its relationship with wheat productivity is vital in farming systems for sustainable agriculture. In this study, fertilizers such as N, P, and K have been taken for their consumption trend from 2000-01 to 2020-21 in the state of Chhattisgarh, India. It was observed that the consumption trend is significantly increasing. Moreover, a relationship between N consumption and wheat productivity, P consumption and wheat productivity, and K consumption and wheat productivity has been explored. Three models: (i) Straight line, (ii) Second-degree parabola curve and (iii) Exponential curve were explored, and R² has been used to find the better model. It was observed that the maximum R² is 0.66, 0.67 and 0.49 in the case of N consumption with wheat productivity, P consumption with wheat productivity, and K consumption with wheat productivity, respectively, and these are shown only by the second-degree parabola curve. R² is significant at the 1% level. Hence, it was observed that a second-degree parabola could be used to find the relationship between fertilizer consumption and wheat productivity. Compound growth rates of N, P, and K consumption were increasing patterns of the Rabi season in Chhattisgarh state from 2001-02 to 2020-21.

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