The sunflower midge, Contarinia schulzi Gagné is a major pest of commercial sunflower. Larval feeding causes a gall-like growth distortion of the growing capitulum that limits seed production. Control methods will be aided by being able to accurately predict sunflower midge emergence. A degree day model of sunflower midge emergence is presented.
Species 1: Diptera Cecidomyiidae Contarinia schulzi (sunflower midge)
Keywords: degree day
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