Issue No. 12, Article 12/June 15, 2007
Severe thunderstorms went through portions of the region on Thursday evening, June 7. Higher amounts of precipitation were received in parts of the northwest area, with a few areas receiving 1.5 inches. However, a significant portion of the northern region did not receive any rainfall. Field activities this week focused on finishing side-dressing anhydrous ammonia and corn postemergence herbicide applications. Postemergence soybean herbicide applications also occurred.
Several reports have been received of "yellow flash" in soybeans after glyphosate application. The glyphosate "flash" appears to be occurring more frequently this year than the past several years. Many of the later planted no-till soybean fields are weedy and lack soil moisture.
A reminder that the second of the 2007 Crops Training Center summer sessions will be held on Thursday, June 28, from 9:00 am to noon at the Northern Illinois Agronomy Research Center, Shabbona. The session will focus on a corn and soybean insect update. Presenters include Dr. Kevin Steffey, University of Illinois Extension entomology specialist, and (via distance technology) Dr. Marlin Rice, Iowa State University entomologist. Preregistration is requested by June 21; contact Greg Clark, Whiteside County Extension Unit (firstname.lastname@example.org, 815-772-4075). Cost is $25 per person, and Certified Crop Adviser CEUs have been applied for.
Wheat harvest is now underway. Warm, dry conditions have allowed the crop to dry down very quickly. Less than 5% has been harvested; reported yields are highly variable.
Most corn is growing fairly well, although there continues to be a lack of uniformity in many fields. Dry soils are becoming an important issue in southern Illinois.
Soybeans are growing well. Weed control issues should be addressed in a timely manner.
When using glyphosate, remember to use the correct rate and additives, such as ammonium sulfate, when needed. Also remember the ever-present concerns about pesticide drift and tank contamination.
Continue to monitor alfalfa fields for leafhopper infestations. Hay harvest conditions have been great, at the expense of row crops that need rainfall.
Corn is growing rapidly. Most corn is around waist-high, with the earliest planted fields about head-high. Some European corn borers can be found, and moths are still flying. Moisture stress is starting to show up in several areas and will likely be more prevalent the rest of this week, with temperatures in the high 80s to low 90s and no rain in the forecast until next Tuesday.
Soybeans are in the V2-V4 stage depending on how early they were planted. Some Roundup applications have already been made when winds allowed.
Wheat is turning rapidly throughout the region, and harvest may be a little earlier this year.
Most of the first cutting of alfalfa has been finished.
There are not many pest problems to report this week. The main talk is the drier weather as plants are beginning to show stress.