Population of lacewing, Chrysoperla carnea (Stephens) in relation to sucking insect pests in cotton ecosystem

The results on population of lacewing in relation to sucking insect pests in cotton ecosystem through direct plant count method be recorded in the vicinity of Sindh Agriculture University Tandojam Pakistan from 8th May to 29th September 2009, at weekly intervals. The consolidated data showed that th...

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Published inPak. J. Agri. Engg., Vet. Sci. Vol. 25; no. 2; pp. 53 - 57
Main Authors Mari, J.M. (Sindh Agriculture Univ., Tandojam (Pakistan). Dept. of Entomology), Nizamani, S.M. (Sindh Agriculture Univ., Tandojam (Pakistan). Dept. of Entomology), Lohar, M.K. (Sindh Agriculture Univ., Tandojam (Pakistan). Dept. of Entomology)
Format Journal Article
LanguageEnglish
Published 2009
Subjects
AMRASCA DEVASTANS
APHIS GOSSYPII
BEMISIA TABACI
CHRYSOPERLA CARNEA
GOSSYPIUM HIRSUTUM
POPULATION DENSITY
PREDATORS
SUCKING INSECTS
THRIPS TABACI
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Summary:The results on population of lacewing in relation to sucking insect pests in cotton ecosystem through direct plant count method be recorded in the vicinity of Sindh Agriculture University Tandojam Pakistan from 8th May to 29th September 2009, at weekly intervals. The consolidated data showed that the sucking insect pest population was highest (10.41) on 19th July. It decreased and reached its lowest (1.81) on 29th September. The results on population of lacewing recorded on cotton crop indicated that it appeared in the crop from 1st June. The predator population increased gradually and linearly and was at its peak (2.80) per plant on 21st September. After that, it decreased with the maturity of the crop. The regression analysis indicated that the population was highly significant with time interval. The highest population of predators could be due to easy access of sucking insect pests. Its population was lowest (0.18) per plant on 9th June.
Bibliography:CATPAK-71537
H10
ISSN:1023-1072