Soybean storage insect

These are bruchids or weevils, they are common storage pests that can cause up to 100% damage. These particular ones look like the African cowpea bruchids (Callosobruchus maculatus).

Female bruchids lay eggs on mature soybean seeds in the field. In storage, the eggs will hatch, and larvae will infiltrate the embryo of the seed and feed until adulthood. Adult bruchids make a characteristic circular hole while eating their way out of the soybean seed.

Bruchids feeding cause seed weight loss, loss of seed viability and they alter seed quality due to the presence of insect frass, excrement and dead insects in and on the seed.

Good store hygiene can limit infestation by bruchid beetles. Dry grains to moisture level below 13% and store grains in dry, well ventilated areas. Solarisation (sun drying and heating) can also be used to control infestations without affecting seed germination. Remove crop debris from soybean seeds before storage and plant resistant varieties. For more information on this and other important soybean seed seedborne diseases and pests check this link: https://e28390ae-c21d-42e9-b6e3-e0f820d1772b.filesusr.com/ugd/7b7dcd_6c5d3fc3dc4f46e18c68fc6a45f82896.pdf

#bruchidbeetles #storagepest