SDSU is reporting big yield increases from controlling soybean aphids in its Brookings, S.D. trials this year.
"If I were farming 1,000 acres, for example, the difference between spraying and not spraying could have been the value of a nice house and lot," says Mike Catagnui, SDSU extension entomologist.
He calculated that with soybeans at $8 per bushels, the impact on spraying 1,000 acres with the top performing insecticide would have netted a farmer an additional $221,200.
Yield increases from the 16 different insecticides or insecticide combinations ranged from 16.2 bushels to 28.9 bushels per acre over the untreated check.
"It appears, therefore, that the choices that we make when trying to manage soybean aphids during the growing season can actually have a profound influence in our potential income at harvest," Catangui says.
For more information, see plantsci.sdstate.edu/ent/entpubs/SEE_Mail.htm.