Also see: Corn
Probabilities of yield deviations for rainfed corn production across the Corn Belt.
Probabilities of yield deviations for rainfed corn production across the Corn Belt.

Corn Yield Forecasts as of Sept. 7

September 8, 2016
The Sept. 7 corn yield forecasts show a majority of the irrigated sites expected to produce above normal, but not record-breaking yields. Forecasted yields for rainfed sites are more variable, although most are expected to be near normal. Above average yields are expected for 11 of the 37 sites studied and below-normal yields are forecast for five sites.

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Bacterial Leaf Streak of Corn
Bacterial Leaf Streak of Corn

Bacterial Leaf Streak of Corn Confirmed in Nebraska, Other Corn Belt States

August 26, 2016
Bacterial leaf streak disease of corn, caused by Xanthomonas vasicola pv. vasculorum, has now been confirmed in multiple Corn Belt states. First identified in Nebraska, the bacterial disease has symptoms similar to other corn diseases, such as gray leaf spot, but is managed differently.

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Map of corn yield deviation from long-term averages

Corn Yield Forecasts for Aug. 24, Including State Forecasts

August 25, 2016
August 24 corn yield forecasts for 41 sites across the Corn Belt showed many near or above average. At Nebraska rainfed corn sites there is a high probability (>75%) of above-average yield at the North Platte and central east sites and a high probability (>75%) of below-average yield at the southwestern and southeastern Nebraska sites (McCook, Clay Center, and Beatrice). In irrigated corn there was a high probability of near or above average yields for all except the Beatrice site. See the story for data tables and discussion.

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Malformed corn ears
Malformed corn ears

Corn Ear Formation Issues Likely Correlated With the Loss of the Primary Ear Node

August 19, 2016
UNL agronomists and educators responding to grower questions surveyed a number of corn fields this week and found a range of corn ear issues: short husks, dumbbell-shaped ears, and multiple ears per node. The article describes and discusses the situation, potential stress agents, and the development of corn. It also encourages growers to check their fields pre-harvest to better assess causes of potential yield loss.

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Corn field
Corn field

2016 Crop Tour Preview: Will Nebraska fall short of 2015 record yields?

August 18, 2016
An overview of Nebraska soybean and corn crops as of mid-August 2016.

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Figure 1. Twospotted spider mites on a leaf and in a web. Often spider mites may be almost imperceptible on a leaf, but before more visible against their silk-like webs. (Photos by Jim Kalisch)
Figure 1. 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. (Photos by Jim Kalisch)

Managing Spider Mites in Corn and Soybean

August 11, 2016
Recommendations for managing spider mites in corn and soybean, including treatment thresholds, insecticides as well as discussions on the potential impact of beneficial insects, diseases, and insecticide applications.

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A corn field at mid-grain filling near Atkinson, Nebr. (Photo courtesy of Nicolas Cafaro La Menza and Mariano Hernandez; taken August 10, 2016).
A corn field at mid-grain filling near Atkinson, Nebr. (Photo courtesy of Nicolas Cafaro La Menza and Mariano Hernandez; taken August 10, 2016).

2016 Corn Yield Forecasts as of Aug. 10

August 11, 2016
Simulations of 2016 end-of-season corn yield potential for 41 sites indicate high probability of near or above-average yields in irrigated fields, but much more variability across the Corn Belt for rainfed fields. Several sites in southern and northeast Nebraska and in Iowa show a higher probability of below average yields. The article includes yield forecasts for each site, along with conditions for the period contributing to the forecasts.

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Spider mite damage to soybean leaves.
Spider mite damage to soybean leaves.

Identifying Spider Mite Damage and the Species Responsible

August 10, 2016
Two species of spider mites, the Banks grass mite and the twospotted spider mite, commonly feed on Nebraska corn. Banks grass mites (BGM) feed almost exclusively on grasses, including corn, small grains, and sorghum. Twospotted spider mites (TSM) not only feed on many species of grasses, but also on soybeans, fruit trees, and a variety of vegetables and ornamental plants.

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