Effect of integrated potassium management on growth, yield and nutrient uptake of wheat (Triticum aestivum)

Abstract

A field experiment was conducted during rabi seasons of2017-19 at Panwari village, Agra (U.P.) to assess the effect of integrated potassium management on growth, yield and uptake of nutrient in wheat (Triticum aestivum). The experiment was laidout in a randomized block design with seven treatments and three replications. The results revealed that increasing levels of K fertilizers increased the growth and yield attributes up to 90 Kg K2O ha-1 over control. But the growth and yield attributes 0f wheat were maximum with the application of 150 Kg N + 60 Kg P2O5 + 60 Kg K2O + 5 t FYM ha-1. Increasing levels of NPK fertilizers increased the yield of wheat grain and straw over control. The maximum yield of grain(5.48 t ha-1) and straw(9.60 t ha-1) were recorded with N150P60K60FYM5. The increases in grain and straw yield with this treatment were 44.2 and 29.7% over control, respectively. The crop quality in respect of content and yield of protein increased significantly with conjoint use of fertilizers and maximum values were recorded with 150 Kg N + 60 Kg P2O5 + 60 Kg K2O + 5 t FYM ha-1 treatment. Increasing levels of NPK fertilizers up to N 150 P 60 K 90 also resulted in higher uptake of NPK by the crop and highest uptake of N, P, K and S by wheat crop was recorded with N150 P60 K60 FYM5 and the lowest in control. The soil organic carbon, available N, P and K content also improved with N150 P60 K60 FYM5 over control and lowest values of these parameters were recorded in control.