Caterpillars are one of the most destructive insect pests that can infest soybean crops. They can cause significant yield losses and reduce the quality of the crop. Controlling these pests is critical to boost productivity and profitability for soybean growers. Here are some ways by which caterpillars can be controlled in soybean crops.
Use of Insecticides:
Insecticides remain the primary method for controlling caterpillars in soybean crops. Various insecticides are available in the market for caterpillar control, and each has different modes of action. Growers should choose an insecticide based on the type of caterpillar species and their lifecycle stage. It is important to read and follow the insecticide label to ensure proper use and to reduce the likelihood of insecticide resistance developing in the caterpillars.
Biological Control:
Biological control involves the use of natural enemies that parasitize or prey upon the caterpillars. Predatory insects such as ladybird beetles, lacewings, and spiders can be beneficial for controlling caterpillars in soybean crops. Trichogramma wasps can also be released onto soybean fields to control caterpillar eggs. However, biological control methods are only effective for low to moderate infestations.
Crop Rotation:
Crop rotation can drastically reduce the caterpillar problem. It involves planting other crops between consecutive soybean crops. Caterpillars that emerge from overwintering soybean residue can’t survive without soybean plants, so rotating with other crops reduces the number that can be infested the following year.
Cultural Control:
Cultural practices such as timely planting and managing plant density can help deter caterpillar infestations. By planting soybean early, the crop plants can grow taller and develop to a point where they’re less susceptible to the damage caused by caterpillars. Also, maintaining plant populations within a recommended range, can help limit the leaf area present and make it difficult for caterpillars to survive.
It is essential to prevent caterpillar damage from occurring in soybean crops as it directly impacts the yield. Growers should scout the fields regularly to detect caterpillars early and act accordingly. Using a combination of methods can be effective to control caterpillars in soybean crops. The ultimate goal is to prevent the caterpillars from causing significant damage and protect the profitability of the soybean crop.