Seasonal Incidence of Plume Moth, Exelastis Atomosa (Lepidoptera: Pterophoridae) on Long Duration Pigeonpea, Cajanus Cajan

Abstract

<jats:p>The present research was aimed to study the incidence pattern of plume moth, Exelastis atomosa during Kharif 2015-16 and 2016-17 for long duration on pigeonpea cv. Bahar. The results revealed that the incidence of pod bug started from the 5th standard week during 2015-16 and from 6th standard week during 2016-17 and it remained active up to 15thstandard week of both the years. The E. atomosa population attained its peak level during 11th standard week of both the years i.e., 1.73 larvae/ plant and 1.6 larvae/ plant respectively. Correlation studies indicated that population of E. atomosa exhibited a significant positive correlation with maximum and minimum temperatures and wind velocity whereas a significant negative correlation was established with average relative humidity. Other abiotic factors had no significant effect on this insect pest population. The regression equation revealed that variations of different weather variables caused approximately 85.3 and 75.9 per cent variations in E. atomosa population during both years, respectively.</jats:p>

Diversity, Bio-ecology and population dynamics of insect pests of pigeon pea in eastern India

“…al.. (2017 and Bhadani and Patel (2019) who reported that maximum and minimum temperature negatively correlated with pod fly incidence. Relationship of E. atomosa larval population with weather variables are in agreement with Rawat et al (2017) who reported that larval population positively correlated with maximum and minimum temperature while negatively correlated with relative humidity.…”

“…The results of the present findings may be augmented with many workers who reported that pest incidence started from 47 th SMW to till 1 st SMW and pest reached maximum population during 51 st SMW (Pawar et al 2014). Since, 5 th SMW population raised steadily and reached its peak during 11 th SMW and pest exist till 15 th SMW (Rawat et al 2017); Pest incidence initiated from 40 th SMW and attained maximum population during 1 st week of November (Bijewar et al 2018).…”