Evaluation of green lacewing (Crysoperla carnea) eggs hatching in field and laboratory conditions

Abstract

To evaluate the hatchability of Chrysoperla cornea on sugarcane variety HSF-242. Eggs of C. corneawere released in theform of rings containing 25 eggs twice in a month. Similarly 25 eggs per ring were kept inlaboratory at optimum temperature 28 ± 2 °C and relative humidity 60-65%). In field conditions maximum hatching was observed during the month of March which was 70% and followed by April (67%), September (66%). August (65%), May (58%). July (40%) 2nd June (30%). Similarly damaging percentage was observed maximum during the month of June (70%) followed by July (60%). May (42%). August (35%), September (34%). April (33%) and March (30%). In laboratory conditions no significant difference in hatching which was observed and ranged from (72-76%).