Evaluation of fertility levels and weed management practices on summer mungbean [Vigna radiata (L.) Wilczek] under tarai region of Uttarakhand

Abstract

An experiment was conducted during 2016 at the GBPUAT, Pantnagar, the experiment was laid out in split plot design and comprised 5 treatments viz: Recommended dose of fertilizer (RDF-18 kg N + 48 kg P2O5 + 24 kg K2O/ha), half RDF + 2% urea spray at 40 DAS, half RDF + 2% NPK mixture (12:32:16) spray at 40 DAS, RDF + micronutrients (Zn EDTA 0.045% + Boric acid 0.1% + Ammonium molybdate 0.1%) spray at 20 and 40 DAS and half RDF + micronutrients (Zn EDTA 0.045% + Boric acid 0.1% + Ammonium molybdate 0.1%) spray at 20 and 40 DAS were kept in main plots and 4 treatments such as Weedy check, Imazethapyr 10% SL @ 0.075 kg/ha PoE at 20 days after sowing (DAS), Pendimethalin 30% EC @ 1 kg/ha PE + one hand weeding (HW),at 30 DAS and Pendimethalin 30% EC @ 1 kg/ha PE + Imazethapyr 10 % SL @ 0.075kg/ha PoE, at 20 DAS in sub plots. The application of RDF + micronutrients (Zn EDTA 0.045% + Boric acid 0.1% + Ammonium molybdate 0.1%) spray at 20 and 40 DAS and Pendimethalin 30%EC @ 1 kg/ha PE + HW at 30 DAS resulted in higher grain yield, protein yield, NPK uptake in grain, straw and total NPK uptake which were significantly higher than the remaining treatments. The fertility levels and weeds management practices did not influence the protein content significantly.