Soil properties and yield of sweet sorghum [ Sorghum bicolor (L.) Moench] as influenced by the tillage and spentwash management practices.

摘要

A field experiment was conducted to study the effect of spentwash and tillage on soil properties and yield of sweet sorghum under rainfed condition. Results revealed that deep tillage recorded significantly higher soil moisture content (12.99%), available soil nitrogen (233.94 kg N/ha), phosphorus (47.00 kg P 2O 5/ha), potassium (918.33 kg K 2O/ha), and organic carbon content (0.638%) as compared to shallow tillage. Among spentwash levels control recorded significantly higher soil moisture content (12.95%) followed by 75 kg N (12.48%) and 100 kg N (12.06%) per ha through spentwash or RDF (12.03%). Similarly, significantly higher available soil nitrogen (243.10 kg N/ha) was recorded with 150 kg N per ha through spentwash as compared to control. Similarly, available soil phosphorus (49.57 kg P 2O 5/ha) was higher with 75 kg N per ha through spentwash over other levels of spentwash. The highest available soil potassium (1155.00 kg K 2O/ha) and electrical conductivity (0.595 dS/m) were recorded with 150 kg N per ha through spentwash over other levels of spentwash, but was on par with 125 kg N per ha through spentwash. Significantly higher organic carbon, bacteria, fungi and actinomycetes population was recorded with 150 kg N per ha through spentwash, but was on par with 100 kg N and 125 kg N per ha through spentwash. The study indicated that deep tillage with 100 kg N per ha through spentwash was found to be suitable for higher soil moisture content, nutrient availability, chemical, microbial properties and yield.