my lobia shoots are covered with black aphids and the pods have holes, how to manage
2 Answers
Black aphids cluster on tender shoots, flowers and pods of cowpea, suck sap and can spread virus, while pod borer caterpillars bore into pods. For aphids, encourage natural enemies like ladybird beetles, knock them down with a strong water spray on small plots, use yellow sticky traps, and spray a recommended insecticide only when they build up. For pod borer, scout at flowering and podding and spray only on crossing the threshold. Because cowpea pods and grain are eaten, follow the label dose and respect the pre harvest interval, and rotate molecules to avoid resistance. Take samples to your KVK to confirm and get the current recommended option for your area.
The black aphids on lobia shoots can get bad fast. Ladybird beetles cleaned mine up most years and a water jet helps on a small plot. I only spray when they really build up since we eat the pods.