Effect of Agricultural Sulfur on Availability of NPK in Soil, Growth and Yield of Corn (Zea mays L.)

Abstract

A field experiment was carried out to study the effect of agricultural sulfur and date of application on availability of NPK in the soil, growth and yield of two cultivars of corn (5012 and Bohoth 106). Sulfur (95% S) was used with two levels (0, 2.5 Meq S ha ) with four dates of -1 application 30, 60 and 90 day before the sowing. The applications of of sulfur at 60 day before sowing and cultivar Bohoth 106 had significantly increased the availability of nitrogen, phosphorus and potassium in the soil and plant growth indicators (plant height, leaf area, weight of 500 grains and grains yield). The availability of nitrogen, phosphorus, and potassium in the soil was 42.25, 33.87 and 225.46 mg kg respectively, -1 leaf area 0.928 m with an increase 36.07 %. The weight of 500 grains was 118.47 g with an increase 68.32 % and grain yield was 208.4 g plant 2 -1 with an increase 53.68% compared to control.