Irrigating Crops With Seawater

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of Puerto Peñasco. They irrigated the plants daily by flooding the fields with seawater from the Gulf of California. The best halophytes produced roughly the yield of alfalfa using freshwater irrigation. In order to show that these halophytes could replace other crops for use they tested to see if the crops could feed livestock. The halophytes have protein and carbohydrates but they contain too much salt. This limits the amount an animal can eat and dilutes the nutritional value. Therefore, the authors decided to use the halophytes as part of a mixed diet for the livestock. The animals’ meat taste was not affected, but the animals eating the halophyte-mixed diet drank more water and produced 10 percent less meat.
This new agriculture method has many advantages too. First, it is cheaper to pump the seawater than to pump freshwater. In addition, seawater irrigation does not require any special equipment. The same fields have been irrigated for 10 years with no ...

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