Pest Challenges in Row Crops

Pests are opportunists. In corn, soybeans, and wheat, culprits like soybean aphids, corn rootworms, armyworms, and wireworms flourish in simplified, monoculture systems where soil health has taken a backseat. Dr. Jon Lundgren’s research with the Ecdysis Foundation reveals a stark truth: compacted, nutrient-poor soils weaken plant defenses, leaving crops vulnerable. Healthy soils, rich in organic matter, do the opposite—supporting robust root systems that naturally resist pest damage.

Climate and management play their parts, too. Wetter springs and no-till practices, while great for soil, can amplify pest issues if ecological balance is off, for example, from heavy insecticide use or a lack of biodiversity. The takeaway? Pests prey on stressed crops in fragile ecosystems. Regenerative practices flip the script, building a proactive defense that cuts reliance on reactive chemical fixes.

Changing Climate

Consider this: Pests are Opportunists

  • Monoculture systems (growing a single crop) are the most vulnerable.
  • Pests flourish due to a lack of biodiversity. 
  • Crops become weaker and more susceptible to further harm.
  • Healthy soils rich in organic matter can help plants resist pest damage.
  • Robust root systems also play a key role in supporting plant defenses.

Pests pose a growing challenge to crops like corn, soybeans, and wheat, especially in monoculture systems. Uncertain weather and heavy insecticide use further complicate the issue, making sustainable practices more critical than ever. The research both Dr. John Tooker and Dr. Jon Lundgren are doing breaks down how pests exploit vulnerabilities, the role of climate in their behavior, and how regenerative farming can help build resilient crops for the future.

Armyworm on emerging corn plant.
Credit: Univ. KY Entomology Dept.

Climate’s Role in Pest Behavior:

  • For example, wetter springs and milder winters amplify pest issues. These conditions lead to unbalanced insect cycles.
    • Wet conditions disrupt insect life cycles (egg, larva, pupa, adult) by speeding up stages like egg hatching or extending larval growth, leading to larger pest populations earlier.
    • Pests can thrive in humid, wet environments, reproducing faster and surviving longer due to reduced natural die-offs because pests experience fewer natural checks on their population growth.
    • Wetter springs cause pests to hatch earlier, out of sync with predators like ladybugs, allowing pest populations to surge unchecked.
    • Mild, wet conditions enable multiple pest generations per season (e.g., armyworms), increasing crop damage over time.
    • Wet conditions stress crops (e.g., waterlogging) while abundant pests exploit these weaknesses, worsening damage.

Key Quote: “Pests exploit stressed crops and simplified ecosystems. Regenerative practices that prioritize soil health and diversity offer a proactive defense.”

Read more about sustainable pest management by clicking here.

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