Wednesday, March 4, 2009

Agriculture and Water

Shelter belts of trees and bushes along the edge of agricultural fields slow down the wind speed and reduce evaporation and erosion. Planting of trees, grass, and bushes breaks the force of rain and helps rainwater penetrate the soil. Fog and dew contain substantial amounts of water that can be used directly by adapted plant species. Artificial surfaces such as netting-surfaced traps or polyethylene sheets can be exposed to fog and dew. The resulting water can be used for crops. Contour farming is adopted in hilly areas and in lowland areas for paddy fields.

Farmers recognize the efficiency of contour-based systems for conserving soil and water. Salt-resistant varieties of crops have also been developed recently. Because these grow in saline areas, overall agricultural productivity is increased without making additional demands on freshwater sources. Thus, this is a good water conservation strategy. Transfer of water from surplus areas to deficit areas by inter-linking water systems through canals, etc. Desalination technologies such as distillation, electro-dialysis and reverse osmosis are available. Use of efficient watering systems such as drip irrigation and sprinklers will reduce the water consumption by plants.

The most important step in the direction of finding solutions to issues of water and environmental conservation is to change people's attitudes and habits¾this includes each one of us. Conserve water because it is the right thing to do. We can follow some of the simple things that have been listed below and contribute to water conservation. Try to do one thing each day that will result in saving water. Don't worry if the savings are minimal¾every drop counts! You can make a difference. Remember to use only the amount you actually need. Form a group of water-conscious people and encourage your friends and neighbours to be part of this group.

Promote water conservation in community newsletters and on bulletin boards. Encourage your friends, neighbours and co-workers to also contribute. Encourage your family to keep looking for new ways to conserve water in and around your home. Make sure that your home is leak-free. Many homes have leaking pipes that go unnoticed. Do not leave the tap running while you are brushing your teeth or soaping your face. See that there are no leaks in the toilet tank. You can check this by adding colour to the tank. If there is a leak, colour will appear in the toilet bowl within 30 minutes. (Flush as soon as the test is done, since food colouring may stain the tank.) Avoid flushing the toilet unnecessarily. Put a brick or any other device that occupies space to cut down on the amount of water needed for each flush. When washing the car, use water from a bucket and not a hosepipe.

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