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alfalfa

Agronomic Crop Insect Scouting

April 25, 2025lyndsie

David Owens, Extension Entomologist, owensd@udel.edu Alfalfa Mid-to Large alfalfa weevil larvae are still present in some fields. Alfalfa is growing well now, so check its height and compare your counts per 30 stems with the threshold table found in the… Continue Reading →

Agronomic Crops 33:7, alfalfa, slugs, small grain

Agronomic Insect Scouting

April 11, 2025lyndsie

David Owens, Extension Entomologist, owensd@udel.edu Small Grains Insect activity appears to be very low in small grains. Reports were received from county agents scouting small grains with minimal aphid activity. This time of year, thresholds for aphids are very high.… Continue Reading →

Agronomic Crops 33:5, agronomic crop insect scouting, alfalfa, small grains, soybean

Agronomic Crop Insect Scouting

April 12, 2024raharris

David Owens, Extension Entomologist, owensd@udel.edu Slugs Slugs are very active right now. While there are no true thresholds for slugs in field crops, a common benchmark is 1-2 slugs per square foot is a level of interest that may (or… Continue Reading →

Agronomic Crops 32:5, alfalfa, slugs

Agronomic Crop Insect Scouting

April 16, 2021cmanneri

David Owens, Extension Entomologist, owensd@udel.edu Alfalfa Continue to scout alfalfa fields, even if they had been previously treated, for alfalfa weevil. Larvae continue hatching. As a reminder, alfalfa weevil thresholds are based on plant height, value of hay, and control… Continue Reading →

Agronomic Crops 29:4, agronomic crop insect scouting, alfalfa, corn, small grain, soybeans

Agronomic Crop Insect Scouting

April 26, 2019cmanneri

David Owens, Extension Entomologist; owensd@udel.edu Early Season Moth Activity Trap Location True Armyworm per night Black Cutworm per night Willards, MD 0.4 0.7 Salisbury, MD 0 1.4 Laurel, DE 0.3 2.3 Seaford, DE — 4.9 Bridgeville, DE 2.7 3.7 Harrington,… Continue Reading →

Agronomic Crops 27:5, agronomic crop insect scouting, alfalfa, corn, small grain

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