Fruit predation submodel: Heliothis larvae feeding upon cotton fruiting structures

L. T. Wilson and A. P. Gutierrez

Hilgardia, 1980, vol. 48, issue 2

Abstract: Field and laboratory data on the numbers and age distribution of two varieties of cotton fruits, the association of various-age bollworm larvae (Heliothis zea (Boddie)) and various age fruit, as well as the attack rates of the larvae on the fruits were used to develop a submodel describing predation of bollworm larvae on cotton fruits. The submodel will be used in the coupling of bollworm- and cotton-plant population models. This model is an important step in the development of dynamic economic threshold levels for bollworm in cotton.

Keywords: Environmental; Economics; and; Policy (search for similar items in EconPapers)
Date: 1980
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