Incidence of Omiodes indicata (Fabricius) on soybean in Rajasthan Meena A.K.*, Nagar R., Swaminathan R. Department of Entomology, Rajasthan College of Agriculture Maharana Pratap University of Agriculture and Technology, Udaipur, 313001 *Email: akmeenaentomology@gmail.com
Online published on 5 February, 2019. Abstract The incidence of leaf folder Omiodes indicata (F.) on soybean when studied, it was observed that it began during the last week of July, 2015 and continued up to second week of October. In 2016, it began with mid-August and continued up to the second week of October. The peak incidence was in the last week of August (2015) at 12.25 larvae/5 plants when soybean was farmscaped with marigold along the borders. It was 13.00 larvae/5 plants without marigold farmscaping. During 2016, the peak incidence was during the third week of September (3.75 larvae/5 plants) when soybean was farmscaped with marigold, which increased to 4.00 larvae/5 plants without marigold farmscaping. The mean temperature and relative humidity at peak incidence was similar in both the years. The rainfall pattern had a significant influence on the population buildup i.e., lower total rainfall (397.6 mm) with a dry spell until peak population buildup (during 2015 than that during 2016-467.5 mm) resulting in more incidence in 2015. There existed a significant positive correlation with the mean temperature only during 2015 (r= 0.60 under marigold farmscaping; r= 0.58 without marigold). The study also includes a morphological description of O. indicata enabling its diagnostics. Top Keywords Omioides indica, leaf folder, soybean, incidence, peaks, temperature, relative humidity, rainfall, dry spell, diagnostics. Top |