WebAphids: dimethoate: Dimethoate, generics: 10: 1B: Treatment may be advisable if: 1) the aphid population is heavy 2) less than 10% of teh aphids are parasitized, 3) few aphid predators are present, and 4) the average stem length is less than 14 inches. Aphids: Pre-Mixes: Treatment may be advisable if: 1) the aphid population is heavy WebApr 7, 2024 · Although BAA is frequently the most damaging and troublesome aphid to control, spotted alfalfa aphid, pea aphid, and cowpea aphid can also be problematic. In alfalfa, aphids have many natural enemies. Some, like lady beetles, syrphid flies, and parasitoid wasps target aphids.

Alfalfa Weevil Nebraska Extension

WebOrganically Acceptable Methods. Use biological and cultural controls on organically certified crops. Organically certified insecticides such as azadirachtin (Neemix), neem oil … WebAlfalfa varieties that are resistant to spotted alfalfa aphids offer considerable protection from yield and stand losses (Table 1). Insecticides are not commonly required for this pest. Economic threshold: In seedling stands, insecticidal control is justified when one aphid per plant occurs. In established stands, control is justified when 30 ... fcc first clearing

Alfalfa Weevil Management UMN Extension

Webthe honeydew seriously affects the quality of the hay. One aphid per seedling will produce enough young in 7 to 10 lays Lo kill the tiny plant. An infestation of 20 aphids per stem in old stands of alfalfa may develop into a very serious infestation within 1 to 2 weeks. Control Natural or biological control is quite important. WebOct 3, 2013 · Scouting Methods: Randomly select complete stems throughout the field, count the number of blue alfalfa aphids per stem, plus all parasitized (mummified) or diseased (brown and flattened) aphids. … WebBorder harvesting or strip cutting can help preserve natural enemies for aphids and other pests. Aphids feed by sucking juices from leaves, stems, and pods. Large populations … fcc fisma