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| Registros recuperados: 172 | |
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| Lentz, R.D.. |
| Researcher’s seek a more renewable and natural alternative for water soluble anionic polyacrylamide (PAM), a highly-effective, petroleum-derived polymer used in agriculture to control erosion and reduce water seepage from unlined irrigation structures. This study evaluated two anionic polymers: a bacteria-produced polysaccharide (biopolymer) with 10-20 Mg/mol molecular weight (MW) and 30% charge density, and a PAM (12-15 Mg/mol MW, 30% charge density) to compare their ability to flocculate soil colloids, stabilize soil aggregates, and influence effective hydraulic conductivity (seepage loss). The biopolymer most effectively flocculated the colloids at a concentration of 1 mg/L, but was still 30% less effective than PAM at 1 mg/L and 50% less effective than... |
| Tipo: Article |
Palavras-chave: Water-soluble PAM (WSPAM); Erosion control; Erosion; Soil; Water. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1583/1/1539.pdf |
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| Sojka, R.E.; Bjorneberg, D.L.; Trout, T.J.; Strelkoff, T.S.; Nearing, M.A.. |
| Irrigation-induced erosion and rain-induced erosion result from very different systematics. Therefore, both cannot be predicted effectively using the same models. The average two-fold yield and three-fold economic advantage of irrigation over rain-fed agriculture, coupled with the fragility of irrigated land and the strategic importance of irrigation development to meet world agricultural production needs, has raised the urgency for the development of robust, accurate, and precise irrigation-induced erosion models. This paper details the rationale for separate irrigation-induced erosion models, presents essential aspects unique to irrigation that must be accounted for in the models, and summarizes the progress (to date) toward the goal of... |
| Tipo: Article |
Palavras-chave: Erosion; Erosion; Research methodology; Mass Import - autoclassified (may be erroneous). |
| Ano: 2007 |
URL: http://eprints.nwisrl.ars.usda.gov/54/1/1216.pdf |
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| Registros recuperados: 172 | |
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