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root knot nematode

Root Knot Nematode in Field Crops and Vegetables

July 18, 2025raharris

Alyssa K. Betts, Extension Field Crops Pathologist; akoehler@udel.edu Last week in the soybean disease updates I briefly introduced root-knot nematodes (RKN) which are plant pathogenic roundworms that live in the soil and feed on plant roots. Nematodes are favored by… Continue Reading →

Agronomic Crops 33:19, root knot nematode

Soil Sampling for Nematodes in Soybeans

September 13, 2024lyndsie

Alyssa K. Betts, Extension Field Crops Pathologist; akoehler@udel.edu This summer has had many stressful conditions for soybeans. This stress along with the transition into September we often begin to see areas of the field that are dropping leaves early. Often… Continue Reading →

Agronomic Crops 32:27, root knot nematode, soil sampling, soybean cyst nematode, soybeans

Diseases in Soybean

August 16, 2024lyndsie

Alyssa K. Betts, Extension Field Crops Pathologist; akoehler@udel.edu Leaf symptoms are beginning to show up in soybean. Soybean diseases can look very similar to one another and to add complication, there can be multiple diseases occurring in the field at… Continue Reading →

Agronomic Crops 32:23, brown stem rot of soybean, root knot nematode, soybean cyst nematode, soybean sudden death

Soil Sampling for Nematodes in Soybeans

September 8, 2023raharris

Alyssa Koehler, Extension Field Crops Pathologist; akoehler@udel.edu It has been a hot week. This stress along with the transition into September we often begin to see areas of the field that are dropping leaves early. Often these patches may have… Continue Reading →

Agronomic Crops 31:24, root knot nematode, soybean cyst nematode

Good Time to Check for Root Knot Nematode in Vegetables

September 1, 2023raharris

Jerry Brust, IPM Vegetable Specialist, University of Maryland; jbrust@umd.edu Each year I put this information out near the end of a growing season in the hopes that growers will look in their fields for root knot nematode problems, as we… Continue Reading →

Vegetable Crops 31:23, root knot nematode

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