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1984 Sunflower Midge Survey

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Title: 1984 Sunflower Midge Survey
Author: Kopp, D.D.; Busaccaand, J.D.
Description: The sunflower midge, Contarinia schlzi Gagne, has been a pest of cultivated sunflower, Helianthus annuus L, in the Red River Valley of the North since 1971. It hits sporadically when and where it lands. In 1984, sunflower fields were examined for the presence of midge larvae or larval damage and, if present, a rating value was given to reflect the economic severity of infestation. The methods and materials of the survey were detailed. The survey indicated that midge damage to sunflowers was declining from 1981. This was a good indicator of 1985's crop. Warm, moist conditions are the most enticing for midges. these shall not be eliminated.
Date: 1986
Subject: Insect pests
Permalink: http://hdl.handle.net/10365/8241

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