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2011•Annals of Plant Protection SciencesRequires access

Field assessment of Mustard aphid, Lipaphis erysimi (Kalt.) on cultivars of Indian mustard (Brassica juncea L.)

Wajid Hasan, Charan Singh

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Abstract

The incidence of Lipaphis erysimi appeared on mustard commenced from 2nd S.W. and gradually reached its peak 207.22, 262.89 aphid /10 cm central twig in 5th standard week, thereafter population started to decline significantly and reached its lowest 2.56, 0.44 in 6th S.W. during 2007–2008 and 2008–2009 crop seasons, respectively. The highest population of L. erysimi was observed in 4th and 5th S.W. from PRKS-14 (126.11 aphid) and PR-2006-14 (207.22 aphid), respectively during 2007–2008 with lowest zero from PBC-2005-3. Whereas during 2008–2009 crop season, it was highest as on Ashirvad (174.00 aphid), Ashirvad (360.56 aphid) and lowest as on PRKS-28 (1.11 aphid), PRKS-28 (4.11aphid) in 4th and 5th S.W., respectively. After 5th S.W. the population of L. erysimi gradually declined due to increase in temperature.

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What this paper is about

The incidence of Lipaphis erysimi appeared on mustard commenced from 2nd S.W. and gradually reached its peak 207.22, 262.89 aphid /10 cm central twig in 5th standard week, thereafter population started to decline significantly and reached its lowest 2.56, 0.44 in 6th S.W. during 2007–2008 and 2008–2009 crop seasons, respectively. The highest population of L. erysimi was observed in 4th and 5th S.W. from PRKS-14 (126.11 aphid) and PR-2006-14 (207.22 aphid), respectively during 2007–2008 with lowest zero from PBC-2005-3. Whereas during 2008–2009 crop season, it was highest as on Ashirvad (174.00 aphid), Ashirvad (360.56 aphid) and lowest as on PRKS-28 (1.11 aphid), PRKS-28 (4.11aphid) in 4th and 5th S.W., respectively. After 5th S.W. the population of L. erysimi gradually declined due to increase in temperature.

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Available abstract

The incidence of Lipaphis erysimi appeared on mustard commenced from 2nd S.W. and gradually reached its peak 207.22, 262.89 aphid /10 cm central twig in 5th standard week, thereafter population started to decline significantly and reached its lowest 2.56, 0.44 in 6th S.W. during 2007–2008 and 2008–2009 crop seasons, respectively. The highest population of L. erysimi was observed in 4th and 5th S.W. from PRKS-14 (126.11 aphid) and PR-2006-14 (207.22 aphid), respectively during 2007–2008 with lowest zero from PBC-2005-3. Whereas during 2008–2009 crop season, it was highest as on Ashirvad (174.00 aphid), Ashirvad (360.56 aphid) and lowest as on PRKS-28 (1.11 aphid), PRKS-28 (4.11aphid) in 4th and 5th S.W., respectively. After 5th S.W. the population of L. erysimi gradually declined due to increase in temperature.

Key concepts: Lipaphis erysimi, Aphid, Brassica, Twig, Population, Biology, Cultivar, Crop

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Field assessment of Mustard aphid, Lipaphis erysimi (Kalt.) on cultivars of Indian mustard (Brassica juncea L.) — Research Paper | ScholarLens