Straw

Straw is an agricultural by-product, the dry of cereal plants, after the grain and chaff have been removed. Straw makes up about half of the yield of cereal crops such as barley, oats, rice, rye and wheat. It has many uses, including fuel, livestock bedding and fodder, thatching and basket-making. It is usually gathered and stored in a straw bale, which is a bundle of straw tightly bound with twine or wire. Bales may be square, rectangular, or round, depending on the type of baler used.

Current and historic uses of straw include:

Dried straw presents a fire hazard that can ignite easily if exposed to sparks or an open flame. It can also trigger Allergic rhinitis in people who are hypersensitive to airborne allergens such as straw dust.

In addition to its current and historic uses, straw is being investigated as a source of fine chemicals including alkaloids, flavonoids, lignins, phenols, and steroids.

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