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Agronomists in Mato Grosso do Sul recommend controlling volunteer corn in soybean fields to reduce competition for water, light and nutrients. The plants can also host corn leafhoppers that spread corn stunt diseases, threatening yields in the 2026/27 second corn crop if left unmanaged.
The disease-vector risk could reduce second-crop corn production if control is inadequate, creating some upside risk to corn supply expectations. The article describes a preventable threat rather than confirmed crop losses.
ruralnews.agr.brCassia LombardiNov 8, 2026After 56 past bullish disease events, Corn moved a median -0.1% over 5 sessions (48% higher; middle half -1.5% to +1.6%), and +0.8% over 20.
After 69 past disease events, Soybeans moved a median +0.3% over 5 sessions (57% higher; middle half -1.7% to +1.9%), and +0.1% over 20.
Moves of each commodity's benchmark from the last close before the event. Historical reads pool past events of the same kind; they describe what happened, not what will. Not investment advice.
