Vol. 11, Issue 6 (2022)

Author(s):
Preety Verma, Rakesh Kumar, Vinod Kumar Malik, Tarun Verma, KS Ahlawat, Pavitra Kumari, Pankaj Yadav, Monika Jangra and Mamta Khaiper

Abstract:
Mungbean yellow mosaic viral disease is a devastating viral disease causing considerable yield losses in Northern part of India. Mungbean yellow mosaic virus (MYMV) a member of family Geminiviridae, transmitted by insect whitefly (Bemisia tabaci). The present study showed that whitefly population builds up started in month of July and reached to maximum in first week of September. The minimum whitefly population was observed at end of July, which approached its maximum at end of August to early September. The maximum whitefly population was observed on SML 1082 (8.42) followed by TMB 37 (7.197) and MH 421 (5.087). The percent disease index (PDI) was observed maximum in first week October. The terminal PDI was observed highest in SML 1082 (73.32%) cultivar. The highly significant positive correlation was found between cultivars and disease severity. For the management of MYMV disease biorationals were used and amongst all, salicylic acid @ 150 mg/litre as seed priming and then foliar spray @ 150 mg/L recorded significantly higher yield and less terminal PDI (32.75%) with maximum percent disease control (57.27%) followed by treatment sarpagandha leaves extract @10% as seed priming + spray @100 ml/L with fruit yield 523.38 kg/ha with percent disease control (50.73%) which was statistically at par to the recorded for neem oil @ 5ml/kg as seed treatment + spray @5ml/L with fruit yield 493.03 kg/ha).