Growth, Yield and Weed Dynamics in Indian Mustard (Brassica juncea) Influenced by Different Weed Management Practices

In order to determine the most efficient and cost-effective weed management strategy for mustard in Punjab's subtropical climate, a field experiment was carried out during the rabi season of 2024–2025 to examine the impact of weed management techniques on yield, weed dynamics, and mustard economics. The study's findings showed that the weed-free treatment had the lowest mean weed dry weight (00.0 g m-2), the highest weed control efficiency (100%), the highest mean plant height (120.9 cm), dry matter accumulation (13.5 g plant⁻1), siliqua plant-1 (94.3), siliqua length (5.21 cm), mustard seed, straw, and biological yields (22.0, 39.20, and 61.20 q ha-1), and it was statistically superior to the other treatments. Pendimethalin 750g/ha PE + Clodinafop 60g/ha POE, on the other hand, proved to be the best chemical application because it recorded greater values of siliqua plant-1 and yields. Pendimethalin 750g/ha PE + Clodinafop 60g/ha POE treatment increased seed, straw, and biological yields by an average of 99.6%, 55.9%, and 70.1% over the control. The combination treatment of Pendimethalin 750g/ha PE + Clodinafop 60g/ha POE produced the highest net returns (₹106022 ha-1) and B:C ratio (4.20). Because weeds have a suppressive effect on mustard, the lowest values (₹62712 ha-1 and 3.13) were recorded under weedy check.