# Volunteer corn in soybean fields requires control to protect the second corn crop in Mato Grosso do Sul

> 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.

- Date: 2026-11-08 · published 2026-11-08T21:11:51.793Z
- Category: disease · region Brazil · magnitude low
- Page: https://feedsoft.ai/events/88026-volunteer-corn-in-soybean-fields-requires-control-to-protect-the-second-corn
- Commodities: [Corn](https://feedsoft.ai/c/CORN.md), [Soybeans](https://feedsoft.ai/c/SOY.md)

## Why it matters

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.

## Read by commodity

- SOY: neutral
- CORN: bullish ▲

## Similar past events

| Commodity | Date | Event | 5-day % | 20-day % |
| --- | --- | --- | --- | --- |
| CORN | 2025-08-29 | [Is the U.S. Corn and Soybean Crop Getting Smaller? - AgWeb](https://feedsoft.ai/events/13062-is-the-u-s-corn-and-soybean-crop-getting-smaller-agweb.md) | +3.3% | +8.5% |
| CORN | 2026-10-07 | [Rain-soaked harvest raises quality red flags: What it means for yields and basis in the western Corn Belt - Pro Farmer](https://feedsoft.ai/events/12956-rain-soaked-harvest-raises-quality-red-flags-what-it-means-for-yields-and-basis.md) | -3.0% | -6.6% |
| CORN | 2025-10-01 | [Corn diseases lurk in bumper US crop, threatening yields](https://feedsoft.ai/events/22896-corn-diseases-lurk-in-bumper-us-crop-threatening-yields.md) | +1.4% | +2.3% |
| CORN | 2020-10-06 | [ASF gap in China drives global protein inflation
						 \| The Pig Site](https://feedsoft.ai/events/50592-asf-gap-in-china-drives-global-protein-inflation-the-pig-site.md) | +2.6% | +6.8% |
| CORN | 2025-12-03 | [Disappointing Corn Yields in 2025 \| CropWatch \| Nebraska](https://feedsoft.ai/events/13034-disappointing-corn-yields-in-2025-cropwatch-nebraska.md) | +0.7% | -0.4% |
| SOY | 2020-02-25 | [Soybeans bounce, corn stabilizes after Monday's coronavirus crash \| Financial Post](https://feedsoft.ai/events/10640-soybeans-bounce-corn-stabilizes-after-monday-s-coronavirus-crash-financial-post.md) | +1.9% | +1.1% |
| SOY | 2022-03-30 | [CoBank: Bird Flu Cases Will Affect Easter Egg Supplies, Prices](https://feedsoft.ai/events/42262-cobank-bird-flu-cases-will-affect-easter-egg-supplies-prices.md) | -0.7% | +5.1% |
| SOY | 2025-06-10 | [AEB Addresses Egg Supply \| Prepared Foods](https://feedsoft.ai/events/24213-aeb-addresses-egg-supply-prepared-foods.md) | +1.3% | -4.1% |

## Sources

- ruralnews.agr.br: https://ruralnews.agr.br/nacional/milho/milho-tiguera-na-soja-exige-controle-para-blindar-safrinha-em-ms

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Data from Feedsoft AI (https://feedsoft.ai/). For information only; not investment advice.