Corn

Also see: Corn
Maps showing likelihood of yield deviations for rainfed corn at various sites.

2017 Corn Yield Forecasts as of Aug. 9 August 11, 2017

Corn yield forecasts for Nebraska sites indicate near-average to above average yields for most irrigated sites. There was much more yield variability for rainfed locations where three of the sites were forecast with a 50%-100% chance of below-normal yields and three were forecast for normal yields, while one was near average.

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Planting Cover Crops after Silage Offers Several Benefits August 10, 2017

Planting cover crops after silage harvest offers several benefits, including reduced erosion from wind and water, biomass production and possible income.

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Counties with confirmed southern rust

Continued Scouting Urged for Southern Rust Now in 26 Counties August 4, 2017

Southern rust has now been confirmed in corn in 26 Nebraska counties. As we confirm more Nebraska counties with southern rust, it's important to know that the vast majority of rust reports have been sparse and no fungicide application was required. Continued scouting is urged, as injury can be critical to the grain-fill through dough stages.

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NWS-Omaha map showing areas of below normal temperatures

Scout Corn Fields for Kernel Set August 4, 2017

Considering the day to day and week to week variability in weather we’ve experienced and the wide range of regional conditions across Nebraska this year, scouting fields for kernel set and overall condition may be more important than ever. Check out these corn reports from across the state.

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Corn pollen shed

High Humidity and Temperature and Corn Pollination August 4, 2017

Will the high temperatures and humidity experienced in the last few weeks impact corn pollination and kernel set? This summary from an earlier CropWatch article, How Extended High Heat Disrupts Corn Pollination, sheds some light on the question.

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Map of counties where southern rust had been confirmed as of Aug. 3, 2017
Map of counties where southern rust had been confirmed as of Aug. 3, 2017

Nebraska Counties where Southern Rust Has Been Confirmed in Corn August 3, 2017

As of Aug. 3 southern rust had been confirmed in 26 Nebraska counties by the University of Nebraska Plant and Pest Diagnostic Lab. This map is updated as new confirmations are made.

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USDA-NASS: Corn 61% Good-Excellent; Soybean, 60% July 31, 2017

Winter wheat harvest has been completed across most of Nebraska, according to the July 30 report from USDA’s National Agricultural Statistics Service. Significant rainfall of an inch or more was received across most of the state during the previous week and a few north central counties received as much as four inches of rain.

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Twospotted spider mites. Almost microscopic in size, the spider mites may be imperceptible on a leaf, but become more visible against its silk-like webs. (Photo by Jim Kalisch)

Spider Mite Reports Increasing July 28, 2017

Spider mite populations are increasing in Nebraska. Fields should be scouted and the species correctly identified to provide proper management. Population levels should also be considered when treating fields with other insecticides that may knock out all natural predators, leading to population explosions of spider mites.

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