Effect of Quantity and Method of Application of Sulphur at Different Growth Stages in Improving the Quality of QPM and Nutrient Availability in the Soil
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 4
Abstract
In order to investigate the effect of sulphur levels and method of application on sulphur uptake in quality protein maize (QPM) at 30, 60, 90 and harvest stage (grain and stover) and available nutrients in soil, an experiment was conducted. This experiment was conducted with factorial arrangement based on randomised block design with three replications, four factors of sulphur levels (S1:-10 kg ha-1, S2:-20 kg ha-1, S3:-30 kg ha-1 and S4:-40 kg ha-1) and two method of sulphur application (M1: 100% basal as single dose; M2: Two split applications: - 50% each at basal and knee height stage) in Quality Protein Maize (QPM) production in an experimental field located at the College farm, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad, India. The result of experiment showed that the sulphur uptake increased progressively with sulphur levels. Among the four sulphur levels, significantly higher sulphur uptake was observed with 40 kg S ha-1. In method of application, sulphur uptake was found superior in split application at basal and at knee height stage, compared to basal application of sulphur at 30, 60, 90 DAS at harvest stage. The application of sulphur had not shown any significant effect on the available nitrogen, phosphorous and potassium status of the soil. Sulphur status in the soil increased from its initial condition in all the treatments, with increase in sulphur levels. However, the available sulphur content in soil significantly increased in the treatment applied with 40 kg S ha-1 and the lowest with 10 kg S ha-1. The available sulphur content in soil varied from its initial status in different time of application of sulphur.
Authors and Affiliations
Navatha N, Vani K. P, Srinivas A, Surendra Babu P
Keywords
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