How to control aphids on cowpeas? All the practical methods are here

Many pests occur during cowpea cultivation, and aphids are one of the most serious of them. If they are not controlled in time, they are very likely to affect the final cowpea yield. So how should cowpea aphids be controlled? Let's take a look.

1. Causes of occurrence

The main reason aphids occur is that when plants are kept in a poorly ventilated environment for a long time, combined with weather conditions or low water and drought, aphids are extremely likely to occur. Moreover, aphids have extremely strong reproductive capacity. If they are not controlled in time, they can reproduce for several generations in a short period. During an aphid outbreak, they attack cowpeas together and can cause a disaster. This has a very large impact on cowpeas, and control also becomes relatively difficult.

2. Symptoms of occurrence

When aphids occur, they are often found on the tender stems, flower buds, and terminal buds of cowpeas, and the leaves are also targets of their attack. The young and tender parts of the plant are their concentrated locations. When aphids occur, they cause the cowpea leaves to become deformed and wrinkled, and the growing points are damaged, causing the plant to grow slowly or stop growing. In severe cases, the entire plant dies; dead branches and wilted leaves are still relatively mild.

3. Control methods

There are not many methods for controlling aphids. First, you can choose the natural enemies of aphids to suppress them. The natural enemy that promotes aphid control is the ladybug, and it is relatively safer. This will prevent aphids from reproducing rapidly. At the same time, the fallen leaves should be cleaned up in time. In winter, check whether there are things like insect eggs on the leaves. If there are, destroy the insect nests in time so that they cannot reproduce normally. In spring, prune the branches of cowpeas. The branches and leaves damaged by aphids and the abortive flowers should all be pruned off, then burned in a centralized manner to kill the larvae, which can serve as an excellent preventive measure. Alternatively, pesticides can be sprayed for control. Common pesticides include dimethoate, pirimicarb, cypermethrin, and dichlorvos. Note that the pesticides should be used alternately to avoid resistance.

The above is an introduction to aphid control methods for cowpeas. We hope it helps you. If you want to learn more related knowledge, please follow us.