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Wisconsin Crop Weather Report
Issued September 18 for Week Ending September 17, 2017
Vol. 17, No. 25
Weekly Heat Boosts Crop Maturity
There were 6.6 days suitable for fieldwork for the week ending September 17, 2017, according to the USDA's National Agricultural Statistics Service. Dry conditions continued this week, with southern Wisconsin receiving very little precipitation, and only a few light showers in the north. Temperatures, however, were well above normal with daytime highs in the upper 80s. This burst of heat pushed corn and soybeans toward maturity and allowed many farmers to make hay. Reporters in the northern portions of the state commented that corn plant moistures were still too high to chop silage. Silage harvest was going strong in the southern portions of the state. Some reporters there noted that conditions have gotten unfavorably dry and rain is now needed.
Topsoil moisture supplies were rated 4 percent very short, 17 percent short, 77 percent adequate and 2 percent surplus. Subsoil moisture supplies were rated 2 percent very short, 12 percent short, 83 percent adequate and 3 percent surplus.
Ninety-three percent of Wisconsin's corn has reached the dough stage or beyond, 1 day behind the 5-year average. Sixty-seven percent of the corn has reached the dented stage, 5 days behind the average. Ten percent was reported reaching maturity, 11 days behind the average. Corn harvested for silage was reported at 15 percent complete, 9 days behind the average. Corn condition was 70 percent good to excellent, unchanged from last week.
Leaves were turning color on 61 percent of the state's soybean acreage, 7 days behind last year, and 4 days behind the average. Nineteen percent was reported dropping leaves, 8 days behind last year, and 5 days behind the average. Soybean condition was rated 76 percent good to excellent, 1 percentage point less than last week.
Harvesting of oats for grain was reported at 98 percent complete, 1 day ahead of the average.
Twenty-two percent of Wisconsin's winter wheat acres were planted, 7 days ahead of last year. Winter wheat emerged was reported at 5 percent complete, two days ahead of last year.
Potato harvest was reported at 44 percent complete. Potato condition was rated 77 percent good to excellent, unchanged from last week.
Pasture condition was 63 percent good to excellent, 9 percentage points less than last week.
The fourth cutting of alfalfa was reported at 76 percent complete, 10 days ahead of the average.
Selected Quotes from Farm Reporters and County Ag Agents
CHIPPEWA-T.P.: No rain and warm temperatures are drying down corn and soybeans quickly. Corn silage harvest and manure applications have begun. Soybeans started yellowing this week. No insect or disease concerns so far this fall.
CLARK-R.H.: A dry week with some growing degree days, unusual for September. Corn needs some heat to finish. Speaking with some farmers, corn silage harvest is still a couple weeks away. Beginning to see some corn dent, but well behind normal. Soybeans are changing quickly. Some fields showing color change and a day later the whole field has changed as the grain is maturing and drying down. Did see some corn silage harvested, but very limited as moistures are near 80 percent from reports I've received. Most of the oats have been harvested with below average yield and light test weight a common theme.
SHAWANO-B.R.: A week of beautiful weather was much appreciated and allowed for a lot of hay to be made. The corn and soybeans still have a ways to go to be mature so we hope it stays warm. Not much chopping yet for corn silage. Many fields are still very wet with water standing in them.
MONROE-B.H.: Crops on sandy soils are really shutting down due to dry weather.
ST CROIX-D.K.: A warm week has progressed crop maturity. No silage yet but it's getting close.
MARQUETTE/WAUSHARA-D.B.: Potato harvest was slowed last week due to high temps. Corn silage appears to be going at a faster pace. Soybeans are turning yellow and beginning to drop leaves, on many fields.
OUTAGAMIE/WAUPACA-D.L.H.: A week of dry and warmer weather was welcomed by all. Warmer conditions pushed lagging corn and soybeans closer to maturity. Lots of dry hay was harvested.
SHEBOYGAN/OZAUKEE/WASHINGTON-G.S.: Wonderful week of weather. Hurricane Irma threw us some clouds and fog in the early mornings. But the days turned out beautiful with warm temperatures and sunshine.
SAUK-C.N.: The warm weather and sunshine was welcome.
DANE-F.P.: Farmers are harvesting a lot of corn silage. Some corn fields are starting to become almost too low in moisture for corn silage. We need rain.
GREEN-T.Z.: Great week of weather has allowed haymaking to be completed without the interruptions of a rain shower or two. The warmer weather was very welcomed this week. Some have started chopping corn silage and many will start very shortly. Soybeans are turning very quickly, but no leaves dropping yet.
WALWORTH-N.W.: Warm and dry weather has really changed the landscape of the county. Both soybeans and corn are changing colors rapidly.
Wisconsin Weekly Weather, Selected Cities
T = Trace. n.a. = not available.
1/Formula used: GDD = (Daily Maximum (86°) + Daily Minimum (50°)) / 2 - 50° where 86° is used if the maximum exceeds 86° and 50° is used if the minimum falls below 50°. Explanation.
*Normal based on 1971-2000 data.
Data from the NCEP/NOAA Climate Prediction Center
For more weather data, please reference the following sites: http://www.noaa.gov/ http://www.aos.wisc.edu/~sco/ http://www.cocorahs.org/ http://www.weather.gov/
This report has been made possible through the cooperative efforts of the U.S. Department of Agriculture, the Wisconsin Department of Agriculture, Trade, and Consumer Protection, and the National Weather Service.
For climate normals and growing season data for a specific Wisconsin county, first go to our Wisconsin County Home Page, then select your county, then click on the Climate Table link in the left margin for that county.
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