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Plant Pathology

Integrated Crop Management News

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Full-Text Articles in Life Sciences

Take Note Of Diseases In A Cool Spring, Xiao-Bing Yang May 2010

Take Note Of Diseases In A Cool Spring, Xiao-Bing Yang

Integrated Crop Management News

Producers in Iowa have had a good planting season. As of Monday, ISU agronomists reported near completion of corn and 50 percent of soybean planted in Iowa. So far this has been one of the most trouble free planting seasons I remember, with some similarities to last season.


Degree Days - Crops In The Cooler Again, Richard O. Pope Aug 2009

Degree Days - Crops In The Cooler Again, Richard O. Pope

Integrated Crop Management News

After three weeks of near-normal temperatures, Iowa weather wrapped up August with a return to colder-than-normal. For the week of Aug. 24 - 31, we gained on average 50 degree days fewer than normal. So where does that put us?


Degree Days - Entering The Stretch, Aiming For The Finish Line, Richard O. Pope Aug 2009

Degree Days - Entering The Stretch, Aiming For The Finish Line, Richard O. Pope

Integrated Crop Management News

Another week of cool but not too cold weather has positioned the Iowa grain crop well for the final run to harvest. During the week of August 17 we lost a net 50 to 60 degree days to average, but favorable night temperatures allowed for crop condition to improve slightly. The August 24 USDA crop condition report assesses Iowa corn and soybean both at 79 percent good to excellent. Another two or three weeks of good weather and we will begin the final dry-down push to harvest.


Degree Days – Steady As She Goes, Richard O. Pope Aug 2009

Degree Days – Steady As She Goes, Richard O. Pope

Integrated Crop Management News

Another August week down and it was again a favorable week with nearly normal temperatures. What we need most now is to avoid extremes in temperatures throughout the next month, with periodic rainfall. Last week was actually the first in nearly two months that was, albeit slightly, above normal in heat accumulation.


Making Fungicide Decisions On Hail Damaged Crops, Daren S. Mueller Aug 2009

Making Fungicide Decisions On Hail Damaged Crops, Daren S. Mueller

Integrated Crop Management News

During the past weekend hail storms once again wreaked havoc on corn and soybean fields across Iowa. Much like hail damage last month and last week, growers have an option to spray fungicides to protect remaining leaf tissue. We wrote an article last month walking through a fungicide decision on hail-damaged crops at that point in the growing season. Much of the information in that article remains relevant.


Degree Days - We Don't Need Stress!, Richard O. Pope Aug 2009

Degree Days - We Don't Need Stress!, Richard O. Pope

Integrated Crop Management News

It is beyond time to get hot summer weather started! Both corn and soybean are (finally) in reproductive stages, and parts of Iowa are over 200 degree days behind normal. But we don't want to make up that deficit with significantly above-normal temperatures, as high August temperatures mean stress that can cut yield potential dramatically. In 1992, we were nearly as far behind as now, and the cool August weather then produced an above-normal yielding crop, however the grain was wet and fall grain handling and dry down were significant issues.