Influence of Abiotic Factors and Hosts on Seasonal Dynamic of Green Lacewing, Chrysoperla carnea (Stephens)
Abstract
Influence of abiotic factors and hosts on population dynamics of green lacewing, Chrysoper
lacarnea (Stephens) was studied in sunflower, Helianthus annus (Linn.).The maximum number of
C. carnea population was found during mid March –mid April in the first year and mid April – mid
May in the second year in sunflower crop. The maximum number of host population viz. egg and
larva of Helicoverpa armigera and Myzuspe persicae population were found during mid March –mid
April in both the year and correlation studies revealed the positive and significant correlation
between larval population of H. armigera, M. persicae and predator C. carnea. While there was no
significant relationship found between eggs of H. armigera and C. carnea. The C. carnea population
on H. annus during both the year was positively correlated with maximum temperature and
found significant, while negatively correlated with relative humidity. However, no significant
correlation of C. carnea was found with minimum temperature in both the year.
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