A selection of pulses; from top: pinto beans, adzuki beans, butter beans, mung beans, red lentils, black-eye beans, red kidney beans and soya beans. Pulses are the seeds of leguminous plants. They are a concentrated source of vegetable protein and make a vital contribution to human diets in countries where animal protein is expensive or scarce. Soya beans are the major temperate protein crop in the West, used mostly for oil production and animal feed. In Asia most are processed into soya milk and bean curd. Pulses play a useful role in crop rotation because they raise soil nitrogen levels.

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