Discolored Soybean Seed

Source: Lara Sweets, University of Missouri  |   September 26, 2011

This may be a year when soybean seed discoloration is a problem in Missouri. Soybean diseases are one of several factors that can cause discoloration and deterioration of soybean seed. The late season soybean diseases, which can lead to discolored soybean seed tend to be favored by wet conditions, including frequent rains, heavy dews and high humidity, as plants mature or if harvest is delayed due to wet conditions. 

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Top Leaf Death or “dieback” in Corn

Source: R.L. (Bob) Nielsen, Purdue University  |   September 7, 2011 As a corn crop progresses toward physiological maturity, the leaves naturally begin to senesce (die). The timing and pattern of leaf senescence are genetically regulated but are also influenced by environmental triggers, including severe photosynthetic stress. In years where much of the grain fill period is…

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Corn Stalk Rot Identification and Scouting

Stalk rot of corn tends to be a complex of several disease-causing fungi. It is common for multiple causal organisms to be isolated from a single disease sample. Plants with a rotted stalk often have diseased roots and crown. Usually, the same causal organism is involved. Fields where stalk rot is developing should be identified…

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Identifying and Managing Goss’s Wilt

Goss’s wilt commonly occurs in areas of the Western Corn Belt such as Colorado, Kansas, and Nebraska. Over the past few years, the incidence of Goss’s wilt has been on the rise in the Eastern Corn Belt. This year, the disease is more evident in some areas due to heavy storms during the growing season.…

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Soybean Bloom and/or Small Pod Abortion Due to Extreme Heat

During the early reproductive stages, a soybean plant may abort flowers and small pods as it adjusts to the surrounding environmental. The percentage of flower and/or pod shed is determined by how much fruit the plant can support to full development. While some flower and small pod shed is a normal occurrence, unfavorable growing conditions…

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Brown Marmorated Stinkbug in Corn and Soybean

The brown marmorated stinkbug (Halyomorpha halys) (BMSB) is a pest that was introduced into the US about 10 years ago. Like many recent invaders, BMSB is native to Asia and likely hitchhiked to North America in shipping containers. The BMSB feeds on the fruits and seed pods of a wide range of plants including corn…

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