Issue No. 12, Article 12/June 16, 2006
Some cornfields have really started to take off. Most fields fall into the 4- to 6-leaf maturity range. There have been several reports of stressed/stunted plants in fields sprayed with some ALS herbicides. Really cool nights followed by hot days can cause problems for corn plants trying to metabolize some ALS materials. There have also been several reports of glyphosate drift onto non-glyphosate-tolerant corn. Soybeans range from just emerged to second trifoliate. Some Roundup Ready fields are starting to look a little weedy as farmers wait for their first glyphosate application.
Thunderstorms went through the northern region on June 9 and 10, with most areas receiving at least 1 inch of precipitation; the Rockford/Freeport area received over 2 inches. The rainfall was most welcome wherever it fell. Corn and soybeans look good throughout the area.
Just a reminder that a program update focusing on corn and soybean insects will be held on June 30 from 9:00 to noon at the Crops Training Center at the University of Illinois Northern Illinois Agronomy Research Center, Shabbona. The cost is $25; reservations are due by June 23 to the Whiteside County Extension Unit Office, 100 E. Knox Street, Morrison, IL 61270; phone (815)772-4075. An additional program will be held on August 9 focusing on soil fertility and weed control management. Certified Crop Adviser CEUs have been applied for for both programs.
Locally heavy rains on June 10 brought welcome relief to the drier areas of the region, and crop conditions have improved considerably. Much of the corn has entered the rapid growth stage.
As we return to hot, dry conditions, wheat harvest should be starting as this newsletter issue is published. Local estimations are that the crop will be average rather than record breaking. In the more southerly areas of the region where it was wetter early, growers have been pushing to complete full-season soybean planting so they can get wheat harvested and start planting double crop.
The soybean rust sentinel plot in Madison County is at growth stage V5, and scouting has begun.
Much of the area received showers over the weekend of June 10 and 11. Reports vary from 1/4 inch to an inch, depending on location. Following the rain, producers could still find dry soil just an inch below the surface.
Corn growth stages vary from V6 in later-planted fields all the way to V10. Overall, the crop looks healthy going into mid-June. Mike Roegge, crops systems educator with the Adams-Brown Extension Unit, reports having already found European corn borer in some fields, as well as seeing issues with lingering grape colaspis larvae.
Depending on planting date, soybeans range from VE to V4 across the area. Some producers just finished replanting fields that did not emerge evenly due to heavy rains received just after planting. Herbicides are being applied to other fields as summer annuals have started filling in rows.
Wheat fields have reached maturity in much of the region. A few fields show developing weeds, which could be an issue if harvest delays are encountered.
Second cutting of alfalfa has started in the southern part of the region. Regrowth looks healthy except for reports of potato leafhopper damage.