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How to get ahead of nematodes in cotton

In Delta Farm Press

by Patrick Shepard, Delta Farm Press

Louisiana witnessed a shift from root-knot to reniform nematodes in the late 1980s and 1990s. “We conducted nematode survey work in cotton in the mid-1990s, and found that 50 percent of the fields had reniform and only 25 percent had root-knot,” says Louisiana State University AgCenter plant pathologist Charles Overstreet.

“However, we’re now moving slightly back in the other direction because we’re rotating more with corn; we’re now finding a mixture of both reniform and root-knot in cotton fields. Corn is a host for root-knot, but not reniform, so yearly rotation helps manage reniform nematodes. Many Louisiana growers now plant one year with cotton and one with corn.” Continue reading

How to manage nematodes in cotton and soybeans

In Delta Farm Press

By Charles Overstreet, LSU AgCenter

Louisiana has historically experienced losses due to plant-parasitic nematodes in cotton and soybean every year. Some years these losses can be severe and other years fairly minor. The greatest losses occur in years when additional stresses occur during the growing season with drought a primary contributor.

The two major nematodes of both cotton and soybean are the Southern root-knot and reniform nematodes.

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Be as proactive as possible with nematodes

In Delta Farm Press

Many Mississippi cotton producers have nematode problems that are costing them yield and dollars, says Tom Allen, yet they often may not know they have the pests, or if they do they may not be correctly managing for them.

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Four ways to handle Southern root-knot nematode

From Southeast Farm Press

Southern root-knot nematode is causing problems in the Southeast, according to John Mueller, a Clemson University professor. Root-knot nematodes can cause severe reduction in soybean yield, worsen injury caused by other fungal diseases and cause plant death.

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