A replicated field experiment was conducted to evaluate the effects of Rhopalosiphum padi L. on winter wheat forage yields and quality. Increasing aphid infestations caused reductions in forage yield (up to 14-fold), crude protein content (up to 28%), and digestibility (up to 35 %). However, little to no added effect was observed in plots infested with veliferous R. padi (Carrying Barley Yellow Dwarf Virus). Results of these studies raise very serious concerns for cattle producers regarding aphid control in wheat forage.
Species 1: Homoptera Aphididae Rhopalosiphum padi (bird cherry-oat aphid)
Keywords: economic threshold, forage
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