Effect of Defoliation on Yield of Potatoes
Authors: Cranshaw, W. S.; Radcliffe, E. B.
Source: Journal of Economic Entomology, Volume 73, Number 1, February 1980 , pp. 131-134(4)
Publisher: Entomological Society of America
Abstract:Foliage was hand removed from potato plants to simulate insect defoliation injury. The injury inflicted seldom resulted in statistically significant yield differences, but consistent trends were noted. Plants generally recovered completely from lower rates of injury (10 or 33% defoliation) inflicted early in the season while severe defoliation (67%) resulted in only slight yield reductions. Recovery from early season injury was more complete with later maturing cultivars than earlier maturing cultivars. Injury to plants at mid-season resulted in greatest yield reductions. Defoliations after mid-season had less effect. Removal of the top leaves was most detrimental to yields, and removal of middle leaves was least detrimental. Removal of lower leaves reduced yields only during mid-season. Nonuniform defoliation resulted in greater yield reduction than uniform defoliation.
Document Type: Research Article
Publication date: February 1, 1980
- Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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