Author(s):

Pradeep Kumar, JP Singh, SK Verma and Manraj Yadav

Abstract: An experiment was conducted during the Rabi season of 2012-13 and 2013-14 to examine the effects of fertility levels and weed management practices on Nodules formation and yield of lentil (Lens culinaris Medikus). The experiment was laid out in split-plot design comprising six main plot treatments viz. Control (F₀), 100% RDF (F₁), 75% RDF + 2% urea spray at pre-flowering and pod initiation stage (F₂), 75% RDF + Plantgro 9 kg/ha at 35, 50 and 65 DAS as foliar spray (F₃), 100% RDF + 2% urea spray at pre-flowering and pod initiation stage (F₄), 100% RDF+ Plantgro 9 kg/ha at 35, 50 and 65 DAS as foliar spray (F₅) and four sub-plot treatments viz. unweeded (W₀), weed free (W₁), pendimethalin 1 kg a.i./ha (W₂), imazethapyr 37.5 g a.i./ha (W₃). The number of nodules plant^-1 were recorded at 30, 60 and 90 DAS. It was observed that the number of nodules varied significantly due to varying fertility levels and weed management treatments. A close inspection of the data revealed that 100% RDF +Plantgro 9 kg ha^-1 recorded significantly highest nodule number plant^-1 followed by 100% RDF + 2% urea spray as compared to rest of the treatments during both the years of study. Application of 75% RDF +Plantgro 9 kg ha^-1 recorded significantly highest grain yield (1243 and 1323 kg ha^-1) followed by 100% RDF + 2% urea spray (1105 and 1168 kg ha^-1) as compared to rest of the treatments during both the years of study.

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