Characteristics of Melanagromyza sojae (Diptera: Agromyzidae) Damage in Soybean

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Infestation of soybean by Melanagromyza sojae (Zehntner) significantly reduced plant height, leaf area, dry matter accumulation, leaf moisture content, number of branches per plant, Rhizobium nodules and nodule weight, number of pods per plant, number of seeds per pod, and seed yield. Reduction in leaf area and dry matter accumulation appeared to be major factors in reduction in seed yield in plants damaged by M. sojae. Although the M. Sojae damage was similar in plants grown under an extended daily photoperiod of 13 h: 10 min and under Taiwan's autumn photoperiod of 12 h at planting to 10 h: 40 min at harvest, only in those plants that were grown under the extended photoperiod was there no significant reduction in dry matter accumulation and yield. This appeared to be due to the delay in maturity under extended photoperiod, which provided an additional growing period to accumulate dry matter to compensate for the damage caused by the M. Sojae infestation.

Document Type: Research Article

Publication date: April 1, 1989

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  • 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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