Population Dynamics of Mustard Aphid, Lipaphis erysimi (Kaltenbach) on Cauliflower in Relation to Biotic and Abiotic Factors
Sushila Choudhary *
Department of Entomology, Sri Karan Narendra Agriculture University, Jobner, Jaipur, Rajasthan, India.
Ram Kishor Meena
Department of Entomology, Sri Karan Narendra Agriculture University, Jobner, Jaipur, Rajasthan, India.
B. L. Jat
Department of Entomology, Sri Karan Narendra Agriculture University, Jobner, Jaipur, Rajasthan, India.
Akhter Hussain
Department of Entomology, Sri Karan Narendra Agriculture University, Jobner, Jaipur, Rajasthan, India.
Pooja Sharma
Department of Entomology, Sri Karan Narendra Agriculture University, Jobner, Jaipur, Rajasthan, India.
*Author to whom correspondence should be addressed.
Abstract
The field experiment was conducted at Horticulture Farm, S.K.N. College of Agriculture, Jobner during Rabi 2021/22 to know the population dynamics of mustard aphid, Lipaphis erysimi (Kaltenbach). The incidence of aphid started in the first week of December and second week of December remained active throughout the crop season during both years. The population of aphid gradually increased and reached to its peak in the second week of February and first week of February in Rabi, 2021/22, respectively. The correlation studies indicated that the aphid population had non-significant correlation with temperature, relative humidity and sunshine hours in both the years. Both the predators, ladybird beetle and syrphid fly had significant positive relationship with aphid population during both the years.
Keywords: Aphid, correlation, cauliflower