Farm water may include water used in the irrigation of crops or the watering of livestock. The industrial sector accounts for 19% while only 12 % of water withdrawal are destined for municipal and household use. 69% of the world's freshwater withdrawal are committed to agriculture. Of the water used in agriculture, only about half of it can be reused, because much of it evaporates or is lost during transit.
Moreover, in southern countries of the world, water used for irrigation represents up to 91% of general water consumption but agricultural production is equivalent to a third of production in industrialized countries as half of the water destined for irrigation evaporates due to high temperatures or gets lost due to leaks in the water supply distribution networks. The water footprint of any animal product is larger than the water footprint of crop products with equivalent nutritional value.The average water footprint per calorie for beef is 20 times larger than for cereals and starchy roots. About 70% of this agricultural use of water … Some of the crops that require the most water include soybeans, cotton, rice and sugarcane. The state of the world’s land and water resources for food and agriculture … On average, 80 percent of the fresh water withdrawn from rivers and groundwater is used to produce food and other agricultural products. Nearly one-third of the total water footprint of agriculture in the world is related to the production of animal products. According to a report by the United Nations, about 70% of the Earth's fresh water is used for agricultural irrigation. This usage largely consists of irrigation.
The agricultural sector is by far the biggest user of freshwater. 70% of the world’s freshwater is used in agriculture, 22% by industry, and; 8% for domestic use. 2011. In Africa and Asia, an estimated 85-90% of all fresh water used is for agriculture. Worldwide, agriculture represents 70% of total blue water use and 86% of blue + green water use (World Water Assessment Programme, 2009), whereas livestock farming uses 15% of the evapotranspiration of irrigated crops, 33% of that of rain-grown crops, and 68% of that of permanent pastures and rangelands . According to estimates for the year 2000, agriculture accounted for 67% of the world's total freshwater withdrawal, and 86% of its consumption. Agriculture and water quality. Farm water, also known as agricultural water, is water committed for use in the production of food and fibre and collecting for further resources. This means that crop and livestock production absorbed the bulk of the uses of water.
The following section focuses on two broad areas that require attention and presents 3 FAO. challenges that population trends, rising global incomes and climate change present to agriculture and water.