OKLAHOMA ALFALFA PRODUCTION CALENDAR

 Blue Alfalfa Aphid

Infestations may begin as early as late February and cause serious damage before spring growth begins. Spray if numbers reach 10 aphids/plant in new seedling stands or 30 aphids/crown in established stands. Chances of serious damage are greatest with mild temperatures; not dependent the amount of rainfall. 

Short Production Tips for February

Information Capsules

Short OSU Extension Publications 
Alfalfa Aphids in Oklahoma F-7184

OSU Extension Circulars 

   Blue Alfalfa Aphid Photographs  

Alfalfa Calendar (Home)

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