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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.
Hafiz Muhammad Tahir, Zafar Iqbal Khan, Saira Batoo, Kafeel Ahmad, Salma Begum. (2017) Residual effect of lambda-cyhalothrin on abundance of insect pollinators in marigold field patch, Punjab University Journal of Zoology, Volume 32, Issue 2.
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