Population Dynamics of Soybean Girdler Beetle Obereopsis Brevis Swedenboard

Field experiments were conducted during kharif 2017 and 2018 at the farm of AICRP on Soybean, Vasantrao Naik Marathwada Krishi Vidyapeeth (VNMKV) Parbhani (Maharashtra) to evaluate the population dynamics of soybean girdler beetle Oberopsis brevis Swedenboard. The infestation got initiated in 30^th and 31^st meteorological week (MW) during both the years. At the time of physiological maturity peak infestation was observed during 40^th and 41^st MW. The infestation was observed to be significantly positively correlated with bright sunshine hours (2017) and negatively and significantly with wind velocity (2018). The losses caused by O. brevis was observed to be influenced by crop stages and infestation levels.