As of August 21 in Iowa, the latest USDA weekly survey shows 90% of the state’s 2016 corn crop had reached dough stage or beyond, 10 days ahead of the five-year average. “In general, crops remain in good condition with 83% of corn and 82% of soybeans rated good to excellent, and they are ahead of the five-year average for maturity,” notes Bill Northey, Iowa Secretary of Agriculture.
Continued rainfall last week, heavy in some areas of the state, has benefitted both crops. So have cooler nights, which helped with grain fill for corn and pod fill for beans. In Jackson County along Iowa’s eastern edge, “Our corn and soybean crops look about as good as they possibly can,” says Herman Worthmann. “We missed the heavy rains last week that hit other areas of the state. Last week was pretty decent as we had dry weather and could make hay without it getting rained on. Corn is maturing ahead of normal and some corn may be cut for silage in another week or 10 days.”
Seeing some smaller ears and kernel tip back in some fields
In central Iowa in Marshall County, Bob Morehouse says his corn and soybean crops look to be on track with last year’s yields. Populations are higher due to lack of drowned out spots this year, but he says there are some smaller ears this year, and some kernel tip-back on the ears, due to heat and dryness that occurred after pollination in July 2016. Soybeans look better than last year but he’s seeing sudden death disease showing up in some bean fields.
The complete weekly Iowa Crop Progress and Condition Report is available on the Iowa Department of Agriculture & Land Stewardship’s website IowaAgriculture.gov or on USDA’s site nass.usda.gov/ia. The report summary follows here:
Rainfall and cooler nights benefitted Iowa corn and soybeans
CROP REPORT: Continued rainfall, heavy in some areas of the state, resulted in 4.7 days suitable for fieldwork for the week ending August 21, 2016, according to USDA’s National Agricultural Statistics Service. Precipitation and cooler nights benefitted grain and pod fill. Activities for the week included harvesting oats and cutting hay when ground conditions were dry enough.
Topsoil moisture levels rated 1% very short, 6% short, 85% adequate and 8% surplus. Subsoil moisture levels rated 1% very short, 8% short, 84% adequate and 7% surplus. South central and southeast Iowa continue to report the lowest subsoil moisture levels in the state.
Iowa’s corn crop is now 90% in dough stage or beyond
As of August 21 in Iowa, 90% of the 2016 corn crop had reached dough stage or beyond, 10 days ahead of the five-year average, with 45% dented or beyond, six days ahead of last year and four days ahead of normal. There were scattered reports of corn showing signs of maturity. Corn condition rated 83% good to excellent.
Soybeans setting pods reached 92%, five days ahead of last year and four days ahead of normal. Three percent of Iowa’s soybeans have started to turn color. Soybean condition is 82% good to excellent, although there are reports of sudden death and white mold in some soybean fields. Harvesting of oats for grain or seed was nearing completion.
The third cutting of alfalfa hay was 66% complete on August 21, and that’s four days ahead of average. Pasture condition is rated 64% good to excellent. Livestock experienced little stress with near ideal conditions.
IOWA PRELIMINARY WEATHER SUMMARY—for week ending August 21, 2016
By Harry Hillaker, State Climatologist, Iowa Department of Agriculture & Land Stewardship
Both temperatures and precipitation averaged close to seasonal normal across Iowa last week. The reporting week began with slightly cooler than normal weather on Monday (Aug. 15) when Estherville reported a morning low of 54 degrees F. Warmer- than-normal weather prevailed from Tuesday (Aug. 16) through Friday (Aug. 19) with Thursday (Aug. 18) being the hottest day in most areas with highs in the upper 80s to lower 90s. Finally, the weekend brought much cooler weather with highs in the seventies statewide.
Temperatures and rainfall for the week averaged about normal
Temperature extremes for the week ranged from Thursday afternoon highs of 92 degrees at Des Moines, Sioux City, Osceola and Sigourney while Spencer and Sheldon reported the lowest temperatures with 46 degree minimums on Sunday (Aug. 21) morning. Temperatures for the week as a whole average 0.3 degrees above normal.
Monday (Aug. 15) was mostly dry while rain was scattered over the western one-third of Iowa on Tuesday (Aug. 16) and across the eastern two-thirds of the state on Wednesday (Aug. 17) with a few central and north central locations picking up over an inch of rain. Rain fell mostly over far northeast Iowa on Thursday (Aug. 18) night with locally heavy amounts over three inches near Elkader. Finally, rain fell statewide from Friday (Aug. 19) afternoon into Saturday (Aug. 20) morning with rain amounts of one to two inches common from west central into north central and northeast Iowa.
Rain totals for the week varied from only 0.03 inches at Doon in Lyon County to 4.19 inches near Volga in Clayton County. The statewide average precipitation was 1.07 inches or just slightly above the weekly normal of 0.96 inches.