Effect of some insecticides sequences against cotton bollworms larvae, non-target insects and associated predators in cotton fields

El-Dessouki, S. A.

Effect of some insecticides sequences against cotton bollworms larvae, non-target insects and associated predators in cotton fields [electronic resource]. تأثير تتابع بعض المبيدات على مكافحة ديدان اللوز وأثرها الجانبى على الحشرات غير المستهدفة والمفترسات الموجودة فى حقول القطن. - p.1451-1462.

Includes references.

The experiments were carried out during the cotton seasons of 2002, 2003 and 2004 in Sakha Agricultural Research Station Farm, Kafr EI-Sheikh Governorate to evaluate the efficiency of some insecticidal sequences against pink and spiny bollworms larvae. The aim of the insecticidal sequences is to get the most effective control one against the bollworms and to evaluate their site effects on the non-target pests as well as the associated predators in the areas under the evaluation. The results showed that the sequences of dursban, kendo and larvin had a highly reduction percentage in the larval numbers infesting the green bolls. The corresponding reduction in the infestation percentages ranged between 92.7 and 96 for pink bollworm and ranged between 90.9 and 94.9 for spiny bollworm. While the sequence depends on Dipell 2X only showed the least reduction in the larval numbers infesting the green bolls. The reduction in the infestation ranged from 8.4 to 30.0 for pink bollworm and ranged from 11.5 to 30.0 for spiny bollworm. The treatments using dursban only caused highly site effects on the non-target insects as well as the associated predators.


Summary in Arabic.


Cotton--Diseases and pests.
Pink bollworm--Control.
Insecticides--Physiological effect.
Insecticides--Testing.

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