Vol. 12, Issue 3 (2023)

Author(s):
Sugan Chand Meena, Nisha Patel, Archana Sanyal, Saranya R, Anil Patidar and Mavji Patidar

Abstract:
A study was done to find out the diversity and comparative abundance of insect pests of Chick pea (Cicer arietinum L.) in hot arid Rajasthan; a total of 10 locations of chick pea were surveyed from rainfed, tubewell and canal irrigated area in Jaisalmer district during Rabi 2019-20 and 2020-21. Different insects i.e., pod borer (Helicoverpa armigera Hubner), aphid (Aphis craccivora Koch), cutworm (Agrotis ipsilon Hufnagel) and termite (Odontotermes obesus Rambur) were recorded. Of these, H. armigera and O. obesus were recorded as the key pests; It is evident that H. armigera was first appeared in the First fortnight of November (45th - 46th SW) (0.49 larvae per plant) and peak attained in the First fortnight of February (6th - 7th SW) and density was maximum (1.90 larvae per plant) in rainfed as compared to Canal (1.28 larvae per plant) and tubewell irrigated (1.50 larvae per plant) crop. Termite Infestation was maximum in rainfed grown chickpea as compared to tubewell irrigated and canal irrigated. The Helicoverpa showed positive correlation with mean maximum temperature and mean rainfall and significant positive correlation with sunshine hours and significant negative correlation with mean minimum and maximum Relative Humidity.