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Alfalfa Weevil.pdf

🔗 Source: canr.msu.edu

📊 Size: 112 KB

📄 Pages: 2 pages

⬇️ Downloads: 79

Summary

Alfalfa weevil adults are about 0.1875 inches long with a dark stripe, while larvae are green, leg-less, and have a white strip and black head. Both feed on alfalfa, causing damage that can skeletonize leaves and give a whitish appearance. Scouting should start in May, using methods like "tip injury" or "stem and bucket" action threshold. Treatment thresholds vary with stem height, and cutting is preferred over spraying to preserve beneficial insects. If spraying is necessary, note preharvest intervals, which range from 0 to 28 days depending on the product and rate. After cutting, check for larvae that escaped machinery and may feed on regrowth, with a threshold of 6 to 8 larvae per square foot.

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Description

Alfalfa weevil adults are about 0.1875 inches long with a dark stripe, while larvae are green, leg-less, and have a white strip and black head.

Technical Information

File Format: PDF
File Size: 112 KB
Pages: 2
Language: EN
Total Downloads: 79
Last Updated: 1 month ago

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