Innovative Nematode Application in Corn Fields Shows Promising Results

In an intriguing agricultural experiment that seems straight out of a sci-fi movie, tiny nematodes were unleashed in Gary Frost’s corn fields in the Texas Panhandle. These microscopic invaders, known as entomopathogenic nematodes, were introduced to combat the Western corn rootworm, a pest resistant to most control methods and costing farmers up to $2 billion annually. Elson Shields, an Extension entomologist at Cornell University, led this innovative approach.

In 2017, these nematodes were sprayed onto Frost’s fields at night. Their lifecycle involves invading rootworm larvae, reproducing inside, and eventually bursting out to seek new hosts. Shields, who began working with nematodes to control alfalfa snout beetles in New York, discovered their effectiveness against corn rootworms during crop rotations.

The results were promising. Where Frost’s corn plants once leaned from rootworm damage, they now stand straight, showing minimal harm. The experiment expanded from an initial 2 acres to 238 acres, demonstrating the nematodes’ effectiveness and adaptability.

Shields’ research in New York and Texas revealed the nematodes’ persistence and ability to lie dormant for years, ensuring long-term soil health benefits. The cost of inoculation ranges from $35 to $100 per acre, influenced by nematode density and the farmer’s patience for results. While these nematodes might not replace current pest control methods, Shields believes they can strengthen them, especially in light of potential rootworm resistance.

In conclusion, this experiment showcases a novel, sustainable approach to pest management, illustrating how nature’s tiny warriors can play a significant role in modern agriculture.

For more details, you can read the full article by Emily Unglesbee, DTN Staff Reporter.

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