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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