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ArticleBrownfield Ag NewsJul 10, 2026

Are Weather Swings Causing More Crop Diseases This Year?

Increased disease pressure in Midwest corn crops raises concerns for farmers.

AI-generated source brief by USFarms.ag, based on Brownfield Ag News. How our briefs are made

Source published Jul 10, 2026. Check the source date before applying seasonal guidance. Brief published .

crop diseasestar spotnorthern corn leaf blightgrey leaf spotweather impacts

Source summary

What this article covered

Rising Disease Concerns

Farmers are increasingly worried about the impact of diseases on their corn crops due to recent weather patterns.

Multiple Threats

While tar spot is a major focus, diseases like northern corn leaf blight and grey leaf spot are also significant threats.

Rapid Changes

The frequency of disease outbreaks can escalate quickly, necessitating regular monitoring and management.

Key takeaways

5 things worth knowing

  1. 01

    Farmers in the Midwest are experiencing increased disease pressure in corn crops.

  2. 02

    Tar spot is a primary concern, but northern corn leaf blight and grey leaf spot are also significant.

  3. 03

    Weather swings are contributing to the rapid escalation of these diseases.

  4. 04

    Producers need to monitor crops closely, as conditions can change frequently.

  5. 05

    Effective management strategies are essential to mitigate the impact of these diseases.

Source figures at a glance

At a glance

What the article covered, in 4 signals

Disease Pressure

Increasing

Corn crops

Heightened concerns over multiple diseases.

Key Diseases

Tar spot

Northern corn leaf blight

Other diseases also pose risks.

Monitoring Needs

Critical

Crop management

Frequent weather changes require vigilance.

Regional Focus

Midwest

Affected states

Indiana, Ohio, and Michigan are key areas.

Questions & answers

Quick answers

What diseases are affecting corn crops this year?

Farmers are seeing increased pressure from tar spot, northern corn leaf blight, and grey leaf spot.

How often should farmers monitor their crops for diseases?

Farmers should monitor their crops every two to three weeks due to rapid changes in disease pressure.

What regions are most affected by these crop diseases?

Indiana, Ohio, and Michigan are currently facing heightened disease concerns.

Why is tar spot a significant concern for corn farmers?

Tar spot can severely impact corn yields, making it a primary focus for disease management.

What should farmers do to manage these diseases?

Farmers need to implement effective management strategies and remain vigilant in monitoring their crops.

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