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Laboratory evaluation of 2 plant growth regulators as anti feedants against the american bollworm heliothis armigera



Laboratory evaluation of 2 plant growth regulators as anti feedants against the american bollworm heliothis armigera



Zeitschrift fuer Pflanzenkrankheiten und Pflanzenschutz 82(10): 561-565



When H. armigera fifth instar larvae were offered leaves of castor plants treated with different concentrations of the synthetic plant growth regulators Alanap-3 and Weedazol, their feeding was inhibited. The 2 chemicals, thus, possess antifeeding qualities. They also decreased the weight of the resulting pupae as well as elongated the larval duration. Weedazol greatly reduced fecundity in comparison to the control or Alanap-3. The percentage of egg hatchability did not seem to be affected by the amount of the 2 chemicals taken up by the larvae.

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