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| Registros recuperados: 15 | |
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| Carter, David L.; Bondurant, James A.. |
| The technology available for the control of sediments, nutrients, and adsorbed biocides in surface irrigation return flows has been reviewed and evaluated. Some of this technology could be applied immediately to reduce sediment and associated nutrient and biocide concentrations in surface irrigation return flows. Much of the available information needs to be integrated to develop improved control practices. New ideas and new control technology are needed. Economic incentive programs are needed to improve acceptance of control technology. The factors controlling erosion and subsequent sediment concentrations in surface irrigation return flows, and how these factors can be managed to reduce erosion and sediment concentrations are reviewed and... |
| Tipo: Technical Bulletin |
Palavras-chave: Sediment; Mass Import - autoclassified (may be erroneous). |
| Ano: 1976 |
URL: http://eprints.nwisrl.ars.usda.gov/1115/1/378.pdf |
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| Carter, David L.. |
| National concern about nitrate contamination of groundwater is raisin g many questions about the use of nitrogen fertilizer to grow high-quality crops. Some extremists are suggesting that commercial inorganic nitrogen fertilization should not be permitted. Such a limitation would seriously reduce crop productivity and farming profitability. We hope that it does not occur. However, the farming industry has become somewhat careless in nitrogen management because nitrogen fertilizer has been relatively cheap for the past couple of decades. Commonly, "a little extra nitrogen" has been applied to assure against a deficiency and less than maximum yield. in recent years. sugar beet growers have learned that such a practice can be costly because high... |
| Tipo: Article |
Palavras-chave: Practical farm efficiency; Mass Import - autoclassified (may be erroneous). |
| Ano: 1990 |
URL: http://eprints.nwisrl.ars.usda.gov/1228/1/698.pdf |
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| Registros recuperados: 15 | |
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