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Residual effect of lambda-cyhalothrin on abundance of insect pollinators in marigold field patch

Residual effect of lambda-cyhalothrin on abundance of insect pollinators in marigold field patch

Residual effect of lambda-cyhalothrin on abundance of insect pollinators in marigold field patch

 Hafiz Muhammad Tahir1*, Zafar Iqbal Khan2, Saira Batool2, Kafeel Ahmad2, Salma Begum2

 1Department of Zoology, GC University, Lahore, Pakistan.
2Department of Botany, University of Sargodha, Sargodha, Pakistan

ABSTRACT

 In the present residual effects of lambda-cyhalothrin on the abundance of insect
pollinators was recorded under field and a semi- field conditions. Recommended
dose of lambda-cyhalothrin (0.093gm/ml) was used. The number of different
pollinators that visited the marigold plant before and after insecticidal spray was
recorded. In semi-field experiment, honey bees were exposed to insecticide treated
plants for one hour. The mortality rate of honey bees in the control and insecticide
exposed group was compared. Overall, a significant decline in plant pollinators was
observed after application of lambda-cyhalothrin on the patch of marigold plants.
Lambda-cyhalothrin caused significant mortality (15/20=75%) in honey bees in
semi-field experiment. It is concluded that lambda-cyhalothrin is highly poisonous
to insect pollinators; therefore its use should be minimized to protect the population
of insect pollinators.

 

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Punjab University Journal of Zoology

December

Vol. 36, Iss. 2, pp. 125-252

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