Bio-efficacy of pre and post-emergence herbicides on lentil yield, weed control efficiency, weed index, nutrient uptake and economics

Lentil (Lens culinaris Medikus) is an important grain legume crop. Among all the biotic factors, weed infestation being adverse impact on growth, yield, nutrient uptake and economics due to lentil short stature, low branching, lack of protective canopy it’s unable smother weeds. Although, applying pre emergence herbicides, in many situation early control herbicides are not that much efficient for attaining higher yields long duration crop critical competition upto 40-60 DAS. Sequence use post-emergence application may help controlling weeds at later stages growth period. To understand resources distribution a field experiment was laid out BAU research farm, Sabour during Rabi 2019-20 RCBD replicated thrice with 13 treatments assess effect various lentil. Out treatments, free treatment produced significantly yield haum new generation pendimethalin fb quizalofop-ethyl + imazethapyr oxyflurofen were statistically par treatment. Weed efficiency, index, Nutrients Economics by different recorded imazethapyr, imazomox 60 DAS harvest. Ultimately, it can be concluded that, brings enhancing achieving more net returns, B:C ratio apart from suppressing through efficiency lower index.