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| Registros recuperados: 167 | |
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| Bjorneberg, D.L.; Sojka, R.E.; Leytem, A.B.. |
| Irrigation transformed arid land in the Pacific Northwest into productive agricultural land. However, much of this land is prone to erosion during irrigation, which can cause problems on and off of the field. Management practices have been developed to control soil erosion on irrigated land and improve the quality of water returning to streams and rivers. Applying polyacrylamide (PAM) with irrigation water can reduce erosion from furrow irrigated fields more than 90%. Using PAM in combination with other practices, such as applying straw mulch in furrows and installing small sediment ponds on fields, can virtually eliminate sediment loss from fields. Once soil runs off a field, it can be removed by settling in sediment ponds, although soluble... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Water quality; Mass Import - autoclassified (may be erroneous). |
| Ano: 2005 |
URL: http://eprints.nwisrl.ars.usda.gov/957/1/1162.pdf |
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| Sojka, R.E.; Upchurch, D.R.; Borlaug, N.E.. |
| In the past 200 years, soil science has used reductionist research to develop agricultural technologies that have unlocked the hidden potential of earth's natural systems to feed, clothe, and provide raw materials to the human population of over six billion. The soil quality paradigm seeks to change that scientific approach, the nomenclature of soil science, and institutional priorities for soil management and research. The definition of soil quality is elusive and value-laden. Concerns exist for the paradigm's policy overtones, regional and taxonomic biases, failure to reconcile conceptual contradictions, as well as its ambiguous definitions that are confounded by countless circumstance-specific, function-dependent scenarios. The paradigm does not... |
| Tipo: Article |
Palavras-chave: Soil quality; Mass Import - autoclassified (may be erroneous). |
| Ano: 2003 |
URL: http://eprints.nwisrl.ars.usda.gov/157/1/1099.pdf |
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| Registros recuperados: 167 | |
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