The effects of carbaryl exposures to growth and reproduction of Aphis craccivora Koch


Citation

Yusof bin Ibrahim, . and Wong K.Y., . The effects of carbaryl exposures to growth and reproduction of Aphis craccivora Koch. pp. 43-46. ISSN 0126-6128

Abstract

The effects of several concentrations of carbaryl on the life-table parameters of Aphis craccivora Koch were studied. It was revealed that all the early nymphal instars died after being exposed to carbayrl at concentration in excess of 0.0106 a.i. Exposures at this concentration however resulted in a 3-day delay in reproduction in 3 of the tested population and experienced a significantly shorter life span of 10 days when compared to 29 days in the control. Values for the life-table parameters also indicated that these populations would not grow and thus would be unable to continue into the next generation. In contrast 8 of the population exposed to 0.0052 a.i. reached adulthood 40 for those exposed to 0.0027 a.i. and 68 for those at 0.0013 a.i.


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Abstract

The effects of several concentrations of carbaryl on the life-table parameters of Aphis craccivora Koch were studied. It was revealed that all the early nymphal instars died after being exposed to carbayrl at concentration in excess of 0.0106 a.i. Exposures at this concentration however resulted in a 3-day delay in reproduction in 3 of the tested population and experienced a significantly shorter life span of 10 days when compared to 29 days in the control. Values for the life-table parameters also indicated that these populations would not grow and thus would be unable to continue into the next generation. In contrast 8 of the population exposed to 0.0052 a.i. reached adulthood 40 for those exposed to 0.0027 a.i. and 68 for those at 0.0013 a.i.

Additional Metadata

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Item Type: Article
Additional Information: 2 graphs; 1 table; 8 ref. Summary (En Malay)
AGROVOC Term: APHIS
AGROVOC Term: INSECTICIDAS
AGROVOC Term: CICLO VITAL
Depositing User: Ms. Norfaezah Khomsan
Last Modified: 24 Apr 2025 05:55
URI: http://webagris.upm.edu.my/id/eprint/19843

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