Efficacy of different herbicides on weed index, yield and economics of blackgram

A field study titled “Efficacy of different herbicides on weed index, yield and economics of blackgram” was conducted at the Research Field of AICRP on Weed Management, Department of Agronomy, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, during the kharif season of 2024-25. The experiment was set up using a randomized block design with three replications and eight herbicide treatments. Among the treatments, propaquizafop 2.5% + imazethapyr 3.75% ME (RM) applied at 125 g a.i. ha-1 (17DAS) showed the lowest weed index. This treatment also had the best yield characteristics, followed by quizalofop-ethyl 7.5% + imazethapyr 15% EC (RM) at 98.43 g a.i. ha-1 (17 DAS). From an economic point of view, propaquizafop 2.5% + imazethapyr 3.75% ME (RM) at 125 g a.i. ha-1 (17DAS) was the most effective, giving the highest values for net monetary return (61899 Rs per hectare) and benefit-cost ratio (3.10).