Dr. D. B. SisodiyaItaliya Laljeebhai M.2019-07-162019-07-162017http://krishikosh.egranth.ac.in/handle/1/5810114895Investigations on some of the bioecological aspects viz., biology, number of generation and population dynamics of aphid, M. persicae on cumin and its chemical control were carried out at Anand Agricultural University, Anand during 2015-16. It was indicative from the studies on biology of M. persicae on cumin that the average first, second, third and fourth instar nymphal period were 1.68 ± 0.58, 1.84 ± 0.62, 1.56 ± 0.8 and 1.48 ± 0.51 days, respectively. The total nymphal period was varied from 4 to 13 days with an average of 6.56 ± 1.29 days. The pre-reproduction, reproductive and post reproductive periods of M. persicae on cumin were 1.48 ± 0.51, 5.16 ± 1.46 and 1.72 ± 0.61 days, respectively. The female aphid throughout its entire reproductive period produced 18.52 ± 4.27 nymphs at the rate of 4.00 ± 2.23 nymphs/day. The longevity of adult and entire life period were 8.36 ± 1.82 and 14.92 ± 2.00 days, respectively on cumin.en-USnullThesis