Available nutrients in soil are influenced by planting techniques and weed management options in wheat

Abstract

There are continue disturbance of soil under conventional wheat system as repetitive tillage practices for crop establishment results negative impact like; more weed emergence, depletion of soil nutrients and economical losses; laborious and hazardous to environment by affecting sustainability of system and creating pollution. Zero tillage practices are avoiding soil disturbance for seedbed preparation; enhance the sustainability by conserving the resources. Residue retention or application as mulching act as soil condition modifier, reducing the weed population by soil covering and after decomposition release of organic acid in soil help increase the availability of nutrient. Such practices are kept in field experiment to evaluate the zero tillage wheat with variable rate of residue application as mulch in zero tillage and weed management practices. Result revealed that zero-till wheat with 6 ton ha-1 rice residue as mulch application having higher available N, P, K, OC, SMBC with slightly lower pH and EC; while weed management practices shown Sulfosulfuron + metsulfuron @ 25+2 g a.i. ha-1 higher availability of N, P, K, OC, SMBC with slightly lower pH and EC in experimental trial.