October 20, 2011
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Soil & Groundwater Newsletter October 20, 2011 |
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| This Week´s Featured News Stories |
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Natural processes can limit spread of arsenic in water, says study
Many people in Bangladesh and other parts of Asia have been poisoned by drinking groundwater laced with arsenic—not introduced by humans, but leached naturally from sediments, and now being tapped by shallow drinking wells. In recent years, to avoid the problem, deeper wells have been sunk 500 feet or more to purer waters—but fears have remained that when deep water is pumped out, contaminated water might filter down to replace it. Now, a study has shown that deep sediments can grab the arsenic and take it out of circulation—a finding that may help to keep wells safe elsewhere, ... | ||
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Banana compost could boost crop yields, a study finds
Using old banana trees to make compost may help boost crop yields while cutting down water and fertiliser use, according to an Egyptian researcher. Banana-based fertiliser could cut about 20 per cent of the water used in irrigating maize and lead to better yields and improved soil properties — such as availability of micronutrients and soil moisture — a researcher at Egypt`s National Research Centre has found. Banana trees — in fact a large herb — only fruit once and most of ... | ||
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