Recently, the Plant and Insect Diagnostic Clinic received samples of corn leaves with symptoms of tar spot from Jones County in eastern Iowa. Read more about Tar Spot Confirmed in Corn in Eastern Iowa
Integrated Crop Management News
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Removing biomaterial to avoid moving weed seeds between fields can be a daunting task. Typically, combines hold 125-150 lbs of grain and biomaterial after the unloading auger has operated “empty” for one minute. A true clean-out requires about six hours to remove as much biomaterial as possible. While a thorough, top-to-bottom cleaning of the combine is best to avoid the spread of weed seeds between fields, spending 15 to 30 minutes cleaning the combine before moving it out of the field will still remove some biomaterial. Read more about Clean Combines to Avoid Weed Seed Contamination Across Fields
Coarse grains such as corn and soybeans usually thresh relatively easily, but wet field conditions may slow field drying. Rotor speed should not be increased and concave clearance should not be decreased more than necessary for threshing, but spongy corncobs or damp soybean pods may be more difficult to thresh. Greater rotor speed or reduced concave clearance may be necessary in these conditions. Read more about Consider Combine Adjustment for Wet Field Conditions
Corn coming in to the Iowa State University Grain Quality Lab from field trials in central, northeast, and southeast Iowa has been affected by a variety of ear rot fungi, and many individual ears display symptoms of multiple fungi. Read more about Scout Now for Ear Rots
Grain submerged by uncontrolled flood waters is considered Adulterated under the Food Drug and Cosmetic Act. This policy dates to 2008 when grain storages in Cedar Rapids were inundated, and has been applied to several situations since then. Adulterated material cannot be put in commercial facilities of any type, where there would be a chance of entering human or animal food. There have been flooded (over the grain height) fields in northeast Iowa since mid-September. Late September rains have increased the scope of this problem to north central and east central Iowa, as well. Read more about Management of Flood-Submerged Grain
The 2016 growing season was wet with two distinct temperature patterns—hot during early pollination and cooler in August. Most of Iowa had 125% up to 200% of normal rainfall up to Labor Day, and even more after Labor Day. The outlook going forward into October is continued above average temperatures and above normal rainfall. Read more about Wet Weather Creates Challenges for Harvest
Objectives when setting and adjusting the combine are to harvest all crop available in the field while maintaining grain in quality condition for storage. Past field measurements show that field losses due to the combine should be able to be held to one bushel per acre or less if the crop is standing reasonably well. Each two kernels of corn per square foot or four soybeans per square foot, or 3/4 lb corn ear per 1/100 acre equals one bushel per acre loss. Read more about Combine Adjustment for Fall Harvest
The 2016 Iowa Farm Safety and Health Week is held in conjunction with National Farm Safety and Health Week Sept. 18-24. This year’s theme is “Farm Safety…A Legacy to be Proud Of.”
This is the 73rd observance of the National Farm Safety and Health Week that was originally declared by President Franklin D. Roosevelt. Roosevelt signed the first proclamation for farm safety in 1944 because of the high injury rate in agriculture that was impacting the nation’s production efforts during World War II. Read more about Farm Safety: Avoid Slips and Falls During Harvest Season
Some areas have received several inches of rainfall since Sept. 1, during a time when corn and soybean water use declines significantly. This lack of water use by the plant creates saturated soil conditions susceptible to compaction this fall. High soil moisture increases soil compaction caused by field traffic and machinery. Over the past decade the size of Iowa farms has increased, leading to larger and heavier equipment.
However, equipment size is only one factor among many causes of the soil compaction problem. Read more about How to Minimize Soil Compaction During Harvest
If you would like to learn more about current soil fertility issues and research being conducted at universities across the North Central region, then consider attending the 46th Annual North Central Extension-Industry Soil Fertility Conference to be held November 2-3, 2016, from 1:00 p.m. to noon, at the Holiday Inn Airport in Des Moines, Iowa. The conference is early this year. Read more about 46th Annual North Central Extension-Industry Soil Fertility Conference