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Registros recuperados: 1,593
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Estimating Seepage Losses from Canal Systems NWISRL
Worstell, R.V..
Tipo: Article Palavras-chave: Research methodology; Mass Import - autoclassified (may be erroneous).
Ano: 1976 URL: http://eprints.nwisrl.ars.usda.gov/289/1/332.pdf
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Spatially distributed control netowork for flow proportional chemical injection with center pivot irrigation NWISRL
King, B.A.; Wall, R.W.; Taberna, J.P, Jr..
Tipo: Article Palavras-chave: Center pivot; Water.
Ano: 2009 URL: http://eprints.nwisrl.ars.usda.gov/1351/1/1328.pdf
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Alternative intensive cropping with corn NWISRL
Sojka, R.E.; Busscher, W.J..
Tipo: Conference or Workshop Item Palavras-chave: Corn / maize; Mass Import - autoclassified (may be erroneous).
Ano: 1991 URL: http://eprints.nwisrl.ars.usda.gov/906/1/739.pdf
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Matrix-based fertilizers reduce nutrient leaching while maintaining Kentucky bluegrass growth NWISRL
Entry, J.A.; Sojka, R.E..
Tipo: Article Palavras-chave: Soil.
Ano: 2010 URL: http://eprints.nwisrl.ars.usda.gov/1357/1/1333.pdf
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Improving Sugarbeet Storability NWISRL
Strausbaugh, C.A..
Storing sugarbeets, in piles, under ambient con- ditions, in production areas with mild climates, allows for longer and more productive factory campaigns. In southern Idaho, approximately one-third of the roots are directly processed, one-third are held in short-term storage, and one-third are held in long-term storage (greater than 90 days). Some beets in long-term storage will be held up to 150 days, leaving roots sus- ceptible to a number of negative influences. Extreme temperature fluctuations, excessive moisture, restricted air flow (snow, soil, weeds, and rotted roots), microbial development, res- piration rate, and buildup of impurities can all negatively impact sucrose recovery. In addition to disease and water-related problems...
Tipo: Article Palavras-chave: Storage; Sugarbeet.
Ano: 2010 URL: http://eprints.nwisrl.ars.usda.gov/1362/1/1339.pdf
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Droplet Kinetic Energy of Moving Spray-Plate Center-Pivot Irrigation Sprinklers NWISRL
King, B.A.; Bjorneberg, D.L..
The kinetic energy of discrete water drops impacting a bare soil surface generally leads to a drastic reduction in water infiltration rate due to formation of a seal on the soil surface. Under center-pivot sprinkler irrigation, kinetic energy transferred to the soil prior to crop canopy development can have a substantial effect on seasonal runoff and soil erosion, especially when the soil is not protected by crop residue cover. Droplet kinetic energy of seven commercial off-center action rotating spray-plate sprinklers was characterized over a range of flow rates and pressures. Sprinkler droplet kinetic energy was characterized using two methods; droplet kinetic energy per unit sprinkler discharge and droplet kinetic energy applied per unit water depth...
Tipo: Article Palavras-chave: Sprinkler irrigation; Center pivot.
Ano: 2012 URL: http://eprints.nwisrl.ars.usda.gov/1457/1/1422.pdf
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Fluorite Precipitation in a Calcareous Soil Irrigated with High Fluoride Water NWISRL
Tracy, P.W.; Robbins, C.W.; Lewis, G.D..
Tipo: Article Palavras-chave: Calcareous soil; Mass Import - autoclassified (may be erroneous).
Ano: 1984 URL: http://eprints.nwisrl.ars.usda.gov/419/1/529.pdf
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Driving science with one eye on the peer review mirror NWISRL
Sojka, R.E.; Mayland, H.F..
Tipo: Conference or Workshop Item Palavras-chave: Mass Import - unclassified.
Ano: 1993 URL: http://eprints.nwisrl.ars.usda.gov/1062/1/816.pdf
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Yield and Quality as Affected by Early and Late Fall and Spring Harvest of Sugarbeets NWISRL
Carter, J.N.; Kemper, W.D.; Traveller, D.J..
Tipo: Article Palavras-chave: Sugarbeet; Mass Import - autoclassified (may be erroneous).
Ano: 1985 URL: http://eprints.nwisrl.ars.usda.gov/458/1/576.pdf
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Chemical Composition of Agropyron desertorum as Related to Grass Tetany NWISRL
Mayland, H.F.; Grunes, D.L.; Stuart, D.M..
Tipo: Article Palavras-chave: Chemistry; Mass Import - autoclassified (may be erroneous).
Ano: 1974 URL: http://eprints.nwisrl.ars.usda.gov/248/1/268.pdf
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Nitrate leaching under furrow irrigation as affected by crop sequence and tillage NWISRL
Meek, B.D.; Carter, D.L.; Westermann, D.T.; Wright, J.L.; Peckenpaugh, R.E..
Tipo: Article Palavras-chave: Tillage; Mass Import - autoclassified (may be erroneous).
Ano: 1995 URL: http://eprints.nwisrl.ars.usda.gov/639/1/862.pdf
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Managing nitrogen during the crop rotation to increase income and protect the environment NWISRL
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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Nutritional and environmental effects on ammonia emissions from dairy cattle housing: A meta-analysis NWISRL
Bougouin, Adeline; Leytem, A.B.; Dijkstra, Jan; Dungan, R.S.; Kebreab, Ermias.
Nitrogen (N) excreted in urine by dairy cows can be potentially transformed to ammonia (NH3) and emitted to the atmosphere. Dairy production contributes to NH3 emission, which can create human respiratory problems and odor issues, reduces manure quality, and is an indirect source of nitrous oxide (N2O). The objective of this study was to (i) investigate environmental factors and measurement method that influence NH3 from dairy housing, and (ii) identify key explanatory variables in the prediction of NH3 emissions from dairy barns using a meta-analytical approach. Data from 25 studies were used for the preliminary analysis and data from 10 studies reporting 87 treatment means were used for the meta-analysis. Season, flooring type, manure handling and...
Tipo: Article Palavras-chave: Air Emissions; Animal Production; Animal health; Manure.
Ano: 2016 URL: http://eprints.nwisrl.ars.usda.gov/1624/1/1581.pdf
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The use of PAM -- a linear polyacrylamide for use in irrigation water NWISRL
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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Scientific Irrigation Scheduling for Salinity Control of Irrigation Return Flow NWISRL
Jensen, Marvin E..
Tipo: Conference or Workshop Item Palavras-chave: Irrigation scheduling; Mass Import - autoclassified (may be erroneous).
Ano: 1977 URL: http://eprints.nwisrl.ars.usda.gov/1004/1/399.pdf
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Root rot in sugar beet piles at harvest NWISRL
Strausbaugh, C.A..
Sugar beet root rots are not only a concern because of reduced yields, but can also be associated with losses in storage. Our primary sugar beet root rot disease problem in the Amalgamated production area is Rhizoctonia root rot. However, this rot frequently only penetrates a short distance past the surface of the root before a bacterial complex stops the fungus and continues the rot process. This rot complex leads to direct yield loss at harvest time along with additional costs in factory processing. When rotted roots make it into storage piles, they have been shown to compromise surrounding healthy roots. A recent end-of-harvest storage pile survey of 74 to 76% of the piles at receiving stations in Treasure Valley and Magic Valley has identified...
Tipo: Article Palavras-chave: Root rots; Sugarbeet.
Ano: 2014 URL: http://eprints.nwisrl.ars.usda.gov/1539/1/1496.pdf
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Fall Chiseling for Annual Cropping of Spring Wheat in the Intermountain Dryland Region NWISRL
Massee, T.W.; Siddoway, F.H..
Tipo: Article Palavras-chave: Small grain; Mass Import - autoclassified (may be erroneous).
Ano: 1969 URL: http://eprints.nwisrl.ars.usda.gov/664/1/90.pdf
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Synthetic- and bio-polymer use for runoff water quality management in irrigation agriculture NWISRL
Sojka, R.E.; Entry, J.A.; Orts, W.J.; Morishita, D.W.; Ross, C.W.; Horne, D.J..
Tipo: Article Palavras-chave: Erosion; Runoff losses; Water quality; Mass Import - autoclassified (may be erroneous).
Ano: 2005 URL: http://eprints.nwisrl.ars.usda.gov/11/1/1150.pdf
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Seed treatments for improved stand and yield in dry beans in Twin Falls County, ID, 2004 NWISRL
Strausbaugh, C.A.; Koehn, A.C..
Tipo: Article Palavras-chave: Seed treatment.
Ano: 2005 URL: http://eprints.nwisrl.ars.usda.gov/1217/1/1154.pdf
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Irrigation Water Salt Concentration Influences on Sediment Removal by Ponds NWISRL
Robbins, C.W.; Brockway, C.E..
Tipo: Article Palavras-chave: Sediment; Mass Import - autoclassified (may be erroneous).
Ano: 1978 URL: http://eprints.nwisrl.ars.usda.gov/338/1/405.pdf
Registros recuperados: 1,593
Primeira ... 34567891011 ... Última
 

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