Effect of different levels of potassium on nutrient content and uptake by Kharif maize (Zea mays L.)

A field experiment entitled was conducted during kharif season of 2017 at Crop Research Farm of Tirhut College of Agriculture, Dholi to see the effect of different levels of potassium on soil properties, nutrient content and uptake by kharif maize crop. Experiment was laid out in Randomized block design with four replications and nine treatments at different level of potassium (0, 30, 60, 90, 120 and 150 kg ha-1) in which three treatments T7, T8 and T9 along with 5 tons of FYM. The soil of the experimental field was sandy loam in texture, calcareous in nature with pH 8.2 and low in organic carbon (0.44%). The soil contained 210, 16.32 and 122 kg ha-1 available N, P2O5 and K2O, respectively. N and P content of grain and stover were non-significant due to different treatments. However, significantly higher K content of grain and stover was recorded with treatment T9 (T4 + 5 t FYM ha-1). Significantly higher N, P & K uptake of grain and stover were recorded under T9 (T4 + 5 t FYM ha-1) as compared to other treatments.