Pea 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 OSU Extension Publications |
OKLAHOMA ALFALFA PRODUCTION CALENDAR
Pea 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 OSU Extension Publications |
