The weather is great outside, sprayers and spreaders are in the fields over here in Landmark’s south hub. We are currently in the stretch to finish up the bulk of our corn post herbicide applications and sitting well. We are chipping away at topdressing nitrogen on corn but with the extended forecast looking dry, we should be sitting strong by the end of the week. Corn is all over in size, there’s corn pushing 7 foot and there’s corn that hasn’t broken a foot tall yet but overall there is a lot of good-looking corn with dark green color in the area. It’s not time to let up on your corn yet, there are still a few things to keep an eye out for. Western bean cutworm flight is under way so it’s time to start looking for egg masses on the top 3-4 leaves of the corn plant. Tar spot has not been found yet in Wisconsin but it’s still a big topic of discussion. If you do see any in your field, let your Landmark agronomist know right away.
Soybeans are continuing to grow fast and we are under way for spraying our post herbicide applications. We are seeing Japanese beetles in fields with the highest populations on the edges of the field. Have yet to see anything at economic threshold of 30% defoliation before bloom and 20% defoliation after bloom. Soybean aphids are starting to show up and the best time to scout for them is in mid-July. Economic threshold for soybean aphids is 250 aphids per plant on 80% of the field. In hay, we are continuing to find insects and should continue to observe shortly after second cutting.
With hot and humid weather most of last week and a good forecast ahead, most of the area is starting to get back to normal GDU’s for a season. This is good news with a lot of the crop being put in later than normal. The late planted stuff is really off and running now with this great weather but with a small chance of rain for the first time, in a long time. Don’t forget to add a nitrogen stabilizer to your side dress or top dress application. This will help make sure you get the most use out of your application.
Continued work on second pass corn herbicides this past holiday week has been steady. Rain now and then, and each field gets scouted for conditions repeatedly. Many growers will get by with only the first pass applications this year due to fast growth of corn with wet, humid conditions. Corn plant development is rapid now and most canopies are closed. Final late fields are being sprayed.
Insect pest populations remain low and inconsistent but scouting for potato leaf hopper in hay fields will be important if populations grow this month.
Corn pests, like cut worms, have been found in localized areas. Japanese beetles are emerging and beginning to feed on various crop leaves. Economic thresholds must be scouted for and considered before spraying is considered a benefit.
Soybean fields are developing slowly. Late planting and shorter days/longer nights is our problem now. Plants are moving into reproductive flowering stages and giving less energy to growing taller. Chemical options become limited when plants are flowering and setting pods, though the good news is that this timing is better suited for fungicide applications and foliar fertilizers boosting crop yields than earlier applications. Bean insects, aphids, are being reported, but numbers are very low and inconsistent from field to field. Scouting should continue where aphids are present to determine when spraying will be economic. Consider 2020 seed choices already for waterhemp control strategies. Growers will have good NEW seed choices for using various herbicides genetic selectivity for next year. Discuss these with your agronomist to determine your best approach.
Wheat stands are heading out for the most part. Timely harvest should be considered because of the uncertain weather environment this year.
Area farmers are good stewards of the land. This year should be a banner year for monarch butterfly populations, in part, helped by farm owners allowing some non-crop production areas to bloom with common milkweed, the monarch’s favorite source of food! This kind of effort is important as we seek for better public relations between agricultural and non-agricultural people, while showing concern for our environment and pollinator insects.