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| Registros recuperados: 274 | |
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| Sojka, R.E.. |
| This overview will be familiar to anyone who has visited the "PAM page" of the Northwest Irrigation and Soils Research Laboratory's web site. The reader is encouraged to visit that web site, <http://kimberlv.ars.usda.qov/ pampaqe.shtml>, for graphics and photos that were used in this NAICC presentation in Orlando in January, 2001, as well as for other more detailed technical information. PAM has been sold in the United States since 1995 for reducing irrigation-induced erosion and enhancing infiltration. Its soil stabilizing and flocculating properties have also substantially improved runoff water quality by reducing sediments, N, ortho and total P, COD, pesticides, weed seeds, and microorganisms in runoff. The first series of practical field... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Water-soluble PAM (WSPAM); Mass Import - autoclassified (may be erroneous). |
| Ano: 2002 |
URL: http://eprints.nwisrl.ars.usda.gov/1235/1/1075.pdf |
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| Sojka, R.E.; Entry, J.A.; Shewmaker, G.E.; Fuhrmann, J.J.. |
| Fossil fuel burning at the present rate, will double atmospheric carbon dioxide (CO 2 ) in this century, raising air temperature 1.5 to 5 °C. Sequestering carbon (C) in soil can reduce atmospheric CO2 concentration. We measured inorganic and organic C in southern Idaho soils having long term land use histories of native sagebrush vegetation (NSB), irrigated moldboard plowed crops (IMP), irrigated conservation- (chisel) tilled crops (ICT) and irrigated pasture systems (IP). Soil Organic C (SOC) decreased in the order IP>ICT>NSB>IMP. We used our findings to estimate potential amounts of organic C sequestered if irrigated agriculture expanded. If irrigated agricultural land was expanded by10°/0 worldwide and NSB was converted to ICT, 2.5 x 10... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Mass Import - unclassified. |
| Ano: 2007 |
URL: http://eprints.nwisrl.ars.usda.gov/857/1/1225.pdf |
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| Ippolito, J.A.; Bjorneberg, D.L.. |
| Water flowing in irrigation furrows detaches and transports soil particles and subsequently nutrients such as phosphorus. To reduce the risk of erosion and offsite phosphorus transport, producers in south-central Idaho have been converting from furrow to sprinkler irrigation. We completed research on soil phosphorus dynamics in furrow versus sprinkler irrigated soils from four paired-fields in the region. Surface soils (0-2.5 inches) were obtained from fields in September following barley harvest. Furrow irrigated soils contained 38 parts per million of plant-available phosphorus (i.e. Olsen-extractable), on average, as compared to 20 parts per million under sprinkler irrigation. These results are important as 20 parts per million extractable... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Furrow irrigation; Sprinkler irrigation; Soil. |
| Ano: 2013 |
URL: http://eprints.nwisrl.ars.usda.gov/1573/1/1529.pdf |
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| Moore, A.; Satterwhite , Megan; Lehrsch, G.A.; McGeehan, S. |
| Dairy manure applications can potentially improve soil health by adding organic matter (OM) to the soil. However, intensive dairy manure applications can cause salt accumulations on arid, irrigated soils, impairing soil health, which can reduce crop growth and yield. Soil organic matter, a major contributor to soil health, increased by 0.02% for every ton of manure-derived organic matter applied. While soil OM increases typically improve soil health, salt accumulations from manure applications had antagonistic effects on soil health. As manure application rates and frequencies increased, soil properties became increasingly saline-sodic, as indicated by elevated EC and SAR values. Aggregate stability also decreased at the heaviest annual manure... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Application guidelines; Chemistry; Manure. |
| Ano: 2016 |
URL: http://eprints.nwisrl.ars.usda.gov/1619/1/1576.pdf |
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| Mayland, H.F.; Schuman, G.E.; Booth, D.T.; Waggoner Jr, J.W.. |
| The Pathfinder Uranium Mine which is located in southeastern Wyoming, was actively mined during the 1960's-1980's. Reclamation involved returning the spoil/overburden and replacing the salvaged topsoil. The area was revegetated in 1974-1977, but was not grazed until 1980-85. A grazing experiment was then conducted to determine solubility of mineral elements in soil, uptake by plants and absorption by grazing animals. Blood sera were collected at 28-30 day intervals during the three grazing/growing seasons in 1980-1982. Blood sera samples were frozen and later analyzed by ICP. When compared to published data, plants on the reclaimed site contained lower concentrations of Ca, Mg, Mn, P, and Zn; but higher concentrations of Cd, Cr and Ni than plants... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Animal health; Chemistry; Chemistry; Mass Import - autoclassified (may be erroneous). |
| Ano: 2006 |
URL: http://eprints.nwisrl.ars.usda.gov/956/1/1183.pdf |
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| Davis, N.; Meiman, P.; Brummer, J.; Ippolito, J.A.. |
| Fluvial deposition of mine tailings has caused extensive damage to riparian ecosystems throughout the West. Willows are often used for revegetation of fluvial mine tailing deposits but some species accumulate toxic concentrations of metals in leaves and stems. A greenhouse experiment was conducted to determine the value of thinleaf alder [Alnus incana (L.) Moench spp. tinuifolia (Nutt.) Breitung], water birch (Betula occidentalis Hook.), red osier dogwood (Cornus sericea L. spp. sericea), and shrubby cinquefoil [Dasiphora fruticosa (L.) Rybd.] compared to Geyer willow (Salix geyeriana Andersson) for revegetation of fluvial tailing deposits along the Upper Arkansas River. Bare root shrubs were grown in tailings amended with lime and composted biosolids.... |
| Tipo: Conference or Workshop Item |
Palavras-chave: Soil. |
| Ano: 2008 |
URL: http://eprints.nwisrl.ars.usda.gov/1372/1/1345.pdf |
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| Registros recuperados: 274 | |
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