volume 30 issue 4 (december 2010) :
BIOLOGY OF SOYBEAN JASSID, EMPOASCA KERRI (PRUTHI)
1Department of Entomology, College of Agriculture
Junagadh Agricultural University, Junagadh - 362 001, India.
ABSTRACT
A laboratory experiment was conducted to study the biology of soybean jassid during August to October, 2008. The average room temperature during the study was 25.50 ± 2.90, while relative humidity was 67.80 ± 8.45. The life-span comprising of egg period of 5.96 ± 1.13 days, nymphal period of 14.12 ± 1.78 days with 5 instars, adult period of 9.52 ± 0.58 days in male and 11.4 ± 0.86 days in female with pre-oviposition period of 3.44 ± 0.71 days, oviposition period of 4.16 ± 0.8 days and post-oviposition period of 3.16 ± 0.89 days. Thus, the entire life span completed in an average of 27.84 ± 3.07 in male, while, 31.32 ± 3.62 days in female. The average egg laying capacity was 16.28 ± 2.65 eggs per female. The sex ratio of male:female was 1:1.18 under laboratory conditions
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This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Agricultural Science Digest
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