Depending on location, we have received between 1.5 and 4 inches of rain in the last week. It had previously been very dry in some areas, while others were lucky enough to get some pop-up showers. We now have the conditions for diseases to start showing up in corn or soybeans, but this will also depend on their disease susceptibility or disease scores. A few Northern corn leaf blight lesions were present in corn, but I was more concerned with the spread of gray leaf spot from the lower leaves. Japanese beetle infestations have ramped up, especially in later-planted soybeans. If farmers have decided to make fungicide/insecticide applications, they will start on corn this week as it has reached the VT growth stage. Early-planted soybeans have canopied and will soon reach the R3 growth stage. If warranted, they will also receive fungicide/insecticide applications at R3.

85 – 90F

Between 1.5 – 4 inches in the last week

Dry to saturated

Fungicide/Insecticide applications in mid-May planted corn and mid-April planted soybeans

R2

VT

Harvested

Japanese beetles

Waterhemp

Corn – Gray Leaf Spot, Northern Corn Leaf Blight, Goss’ wilt
Soybean – Septoria Leaf Blight, Downy Mildew

Some wind came with the recent storms, but corn has recovered before pollination.

Now is the time to start making plans and purchase seed for next year!