Water needed to produce food

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Water is an essential input for food production.

CSIRO Land and Water scientists in Australia have used precision weighing systems to measure water use by various crops, and the yield from the crops. The following approximate figures were revealed:

  • To produce one kilogram of oven dry wheat grain, it takes 715 - 750 litres of water
  • For 1 kg maize, 540 - 630 litres
  • For 1 kg soybeans, 1650 - 2200 litres
  • For 1 kg paddy rice, 1550 litres
  • For 1 kg beef, 50,000 - 100,000 litres
  • For 1 kg clean wool, 170,000 litres

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