Agriculture relies on a combination of rainwater, surface water (such as rivers and lakes), and groundwater for irrigation and crop production.

Drip irrigation delivers water directly to the root zone of crops, minimizing water loss and maximizing water efficiency, making it suitable for areas with limited water resources.

Water management in agriculture aims to achieve multiple objectives, including increasing crop yields, preventing soil erosion, and reducing water pollution.

Contour farming, crop rotation, and integrated pest management are all agricultural practices that can help reduce water pollution from fertilizers and pesticides by minimizing runoff and promoting soil conservation.

The Great Plains of the United States is known for its extensive use of center-pivot irrigation systems, which allow farmers to irrigate large areas of land efficiently.

The use of groundwater for irrigation can lead to salinization of soil, depletion of aquifers, and waterlogging, all of which can negatively impact agricultural productivity.

The Convention on the Protection and Use of Transboundary Watercourses and International Lakes is an international agreement that aims to promote cooperation in the management of shared water resources.

Waterlogging in agricultural areas can be caused by excessive irrigation, poor drainage, deforestation, and other factors that impede the natural drainage of water.

No-till farming, contour farming, and terracing are all agricultural practices that can help improve water infiltration and reduce runoff, thereby conserving water and preventing soil erosion.

The Middle East, Central Asia, and North Africa are all regions known for their ancient systems of qanats, which are underground water channels used for irrigation.

Dams in agricultural areas serve multiple purposes, including generating hydroelectric power, controlling flooding, and providing water for irrigation.

Drought-resistant crops, precision irrigation, and crop rotation are all agricultural practices that can help reduce the demand for water in crop production.

The main challenge associated with the use of surface water for irrigation is siltation of irrigation canals, which can reduce the flow of water and affect crop production.

Contour farming, terracing, and strip cropping are all agricultural practices that can help reduce soil erosion and improve water retention.

Rainwater harvesting in agricultural areas aims to achieve multiple objectives, including increasing crop yields, preventing soil erosion, and recharging groundwater aquifers.