Need for Precision Agriculture (1)
Need for Precision Agriculture (1). In 1970, 190,500,000 ha classified as arable and permanent cropland in the USA Decreased to 187,776,000 ha by 1991. Irrigated land in the USA peaked at 20,582,000 hectares in 1980 and has been stable at 18,771,000 hectares since 1989.
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