Late blight has been found in a potato field west of Plainfield last Friday, 6/28. With late blight in the area it is important to step up your fungicide program by shortening intervals and using premium products. Be sure to be scouting shaded East borders as they remain wetter later in the day and are therefore at a higher risk of infection by late blight especially if you are spraying by air only. This week we are fighting 3rd and 4th instar Colorado potato beetle larvae who survived earlier insecticide applications especially on edges.
In corn, we are making sure that the fields are weed free and continue monitoring for foliar diseases and insects. Our black light trap moth counts have remained low for most corn insects. We are seeing quite a few rose chafer beetles in several fields in the area, yet we are not seeing much feeding from them at all but will continue to monitor them.
In soybeans, we are cleaning up weeds across most of the area this week and monitoring fields for early insects and disease.
– Otto Oemig, Agronomist