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Crop rotation involves the planting of different kinds of crops, in a time and space sequence, given the differential attributes of the crops, whereby a number of agronomic benefits are obtained. Although crop rotation is an age-old practice, it generally went out of practice in the late 20th century with the widespread introduction of agrochemicals and advanced technologies in agriculture, although some observers advocate a return to crop rotation on ecological grounds. In most countries, including those of the developing world, crop rotation had been a response to the growing population pressure on land resources, allowing lesser and lesser room for leaving the land fallow for a set number of years. Fallowing (leaving cultivated land unseeded and unplowed for one or more growing seasons), practiced ...

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