National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The studies on the Biology of Zygogramma bicolorata on Parthenium hysterophorus was taken up in Department of Entomology, Institute of Agricultural Sciences, SOADU during 2019-20. It was observed that all the biological parameters like the duration of different stages, morphometric measurements of different life stages were highest at 300C followed by 250C. But at 200C and 350C, the parameters showed declining trends indicating that 25-300C is the best for rearing of these predatory beetles in the laboratory. As evidenced from the experiments, it was seen from the length of grubs increased from 1.31mm to 5.75 mm at 200C whereas, it was 1.58 to 5.81 and 1.65 to 5.90 mm at 25 and 300C respectively. But at 350C it declined to 1.61 to 5.86 mm. Similarly, all stages like the second, third and fourth instars as well as the male and females also less at 20 and 350C whereas, it was higher at 25 and 300C.
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