Question

Rice and pulses in the kitchen can get infested by some insects. How do these
insects infest grains even when the grains are stored in closed containers?​

Answer 1

Answer:

It has been estimated that between one quarter and one third of the world grain crop is lost each year during storage. Much of this is due to insect attack. In addition, grain which is not lost is severely reduced in quality by insect damage. Many grain pests preferentially eat out grain embryos, thereby reducing the protein content of feed grain and lowering the percentage of seeds which germinate. Some important stored grain pests include the lesser grain borer, rice weevil and rust red flour beetle.

rust red flour beetle

Overseas customers demand insect-free grain. For this reason, the Australian Department of Agriculture has imposed nil tolerance of insects in export grain. Insect pests also increase costs to grain growers both directly through the expense of control on the farm, and indirectly through the costs incurred by grain handling authorities in controlling weevils in bulk storages.

Grain insect pests may be divided into primary and secondary pests. Primary grain insects have the ability to attack whole, unbroken grains, while secondary pests attack only damaged grain, dust and milled products.

Explanation:

Answer 2

Answer:

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