White Apple Leafhopper (Homoptera: Cicadellidae) Effect on Fruit Size, Quality, and Return Bloom of Apple

Authors: BEERS, E. H.; ELSNER, E. A.; DRAKE, S. R.

Source: Journal of Economic Entomology, Volume 88, Number 4, August 1995 , pp. 973-978(6)

Publisher: Entomological Society of America

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Abstract:

Studies were conducted during 1987 and 1988 on the effect of single season injury by white apple leafhopper, Typhlocyba pomaria McAtee, to the 'Oregon Spur Delicious' apple. In 1987, the internal fruit flesh color (yellow) was increased, indicating that fruit from leafhopper-injured trees was slightly more mature than fruit from uninjured trees. In 1988, external fruit skin color was slightly redder (Hunter a) in fruit from injured trees, but titratable acidity was slightly lower. No effect on fruit weight, fruit firmness, soluble solids, percentage red skin color, retum bloom, or retum crop as a result of leafhopper injury occurred in either year, despite high leafhopper populations (≍6.5nymphs per leaf) and relatively high foliar injury. Current action thresholds for white apple leafhopper are likely too conservative, and the potential for biological control can be explored without economic loss to the producer.

Document Type: Research Article

Publication date: August 1, 1995

More about this publication?
  • 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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