Abstract

The organic nutrient and weed management practices applied in maize and their residual efficiency was seen in succeeding mustard crop in respect of weed management and productivity of mustard. Therefore, an experiment was conducted during rabi 2019- 20 and 2020-21 at College of Agriculture, Sumerpur, Rajasthan, India to see the residual impact of various weed and nutrient management practices on mustard applied in maize during preceding kharif season. The experiment was laid out in a split-plot design, with organic weed management in main plots and organic nutrient management practices in subplots. The crop was raised as residual after main crop of maize. All the treatments were applied in maize during kharif season as per prescribed treatments. The different organic weed and nutrient management treatments did not influence the weed density and weed dry matter of various categories of weeds recorded at 30 DAS. The plant height, dry matter accumulation, number of primary branches and length of silique of mustard was maximum in 100% RDN through FYM in pooled study at different growth stages of crop. This treatment also significantly increased grain (2174 kg/ha) and straw yield (5858 kg/ha) of mustard as well as net return (Rs. 68575/ha) and B:C (2.91) as against the mean minimum in 100% RDN through vermicompost. Thus, application of FYM in preceding season crop has a pronounced effect on productivity of succeeding crop while cultural and mechanical methods of weed control does not have any residual effect.