OKLAHOMA ALFALFA PRODUCTION CALENDAR

Blue Alfalfa Aphid

High population densities often persist into April, requiring careful sampling of fields until first harvest; spray if numbers reach 10 aphids/stem (plants <10 inches tall) or 30/stem (>10 inches tall).

Short Production Tips for April

Information Capsules

Short OSU Extension Publications 
Alfalfa Aphids in Oklahoma F-7184

OSU Extension Circulars

  Blue Alfalfa Aphid Photographs

 

 

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