author(s)
P Swathi, B Jyothi Basu, N Sambasiva Rao and V SaidaNaik

abstract
Field experiment was conducted to study the potential agronomic practices in two successive years to have dependable technology for field level management of yellow mosaic viral disease (YMVD) of Blackgram. The basic objective behind the experiment was to come out deliverables which is not only capable to effectively check the disease but vis-a-vis residue free and sustainable. The experiment included blackgram with agronomic practices such as growing of border crops with sorghum, maize, pearl millet and inter crops of sorghum, maize and pearl millet in the ratio of 5:1 and also the insecticide application treatment and control as comparison. Among all the treatments tested the treatment with chemical application for management of whitefly recorded lowest disease incidence and realized highest yield. Whereas among the different agronomic practices, T5 and T6 (growing maize, pearl millet as a border row) recorded the highest values of growth parameters like Plant height (cm), No. of pods plant-1, yield and also the economic returns. Among the agronomic practices the treatments T5 (23.27 and 20.27) and T6 (23.13 and 20.0.27) recorded highest number of pods during the year 2017-18 and 2018-19 respectively. The treatments of blackgram with maize and pearl millet as a border recorded cost benefit ratio of 1.48 and 1.39 during 2017-18 and 1.42, 1.26 in the year 2018-19.