Grains are a food staple for many cultures. These men are hauling sorghum, the most popular grain in the west African country of Guinea. Sorghum is used to make breads, as well as a sweet syrup. Sorghum is also a source of biofuel.

Photograph by W. Robert Moore

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crop
crop Encyclopedic Entry

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Encyclopedic entry. A crop is a plant or plant product that can be grown and harvested for profit or subsistence. By use, crops fall into six categories: food crops, feed crops, fiber crops, oil crops, ornamental crops, and industrial crops.

grain
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Encyclopedic entry. Grain is the harvested seed of grasses such as wheat, oats, rice, and corn. Other important grains include sorghum, millet, rye, and barley.

growing season
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Encyclopedic entry. A growing season is the period of the year when crops and other plants grow successfully. The length of a growing season varies from place to place.