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| Registros recuperados: 36 | |
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| Ippolito, J.A.; Barbarick, K.A.; McDaniel, J.P.; Hansen., N.C.; Peterson, G.A.. |
| Dryland agroecosystems are generally ideal environments for recycling biosolids. However, what is the efficacy of biosolids addition to a no-till dryland management agroecosystem? From 2000 to 2010, we studied application of biosolids from the Littleton/Englewood, CO Wastewater Treatment Plant versus commercial nitrogen fertilizer in dryland no-till wheat (Triticum aestivum, L.)-fallow (WF) and wheat-corn (Zea mays, L.)-fallow (WCF) rotations at a site approximately 50 miles east of Denver, CO. We tested if biosolids would produce the same yields and grain phosphorus, zinc, and barium concentrations as an equivalent rate of nitrogen fertilizer, that biosolids-borne phosphorus, zinc, and barium would not migrate below the 4 inch soil depth, and that... |
| Tipo: Article |
Palavras-chave: Small grain; Dryland crops; Nitrogen; Phosphorous. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1446/1/1411.pdf |
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| Jensen, M.E.; Sletten, W.H.. |
| Irrigated and dry/and winter wheat is one of the major crops produced in the High Plains of Texas. As reported by the U.S. Census of Agriculture the acreages of irrigated wheat harvested in the High Plains in 1950, 1954, and 1959 were 133,000, 179,000 and 380,000 acres, respectively. Additional irrigated wheat is used only for grazing purposes. The major part of the irrigated winter wheat harvested in the mid-1950's was in Castro, Deaf Smith, Floyd, Hale, Parmer, and Swisher Counties. The soils in these counties consist mostly of clay looms and silty clay loams. Continued expansion in irrigated wheat acreage has occurred since 1959, especially north of the Canadian River. |
| Tipo: Technical Bulletin |
Palavras-chave: Small grain; Soil water (soil moisture); Fertilizer; Chemistry; Evapotranspiration; Mass Import - autoclassified (may be erroneous). |
| Ano: 1965 |
URL: http://eprints.nwisrl.ars.usda.gov/1141/1/21.pdf |
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| Barbarick, K.A.; Ippolito, J.A.; McDaniel, J.P.. |
| Understanding N dynamics in biosolids-amended agroecosystems can help avoid over-application and the potential for environmental degradation. We investigated 15-years of biosolids application to dryland-wheat, questioning what is the relationship between cumulative grain yield and N uptake (N removal) and biosolids or N fertilizer rates and how many times biosolids or N fertilizer are applied? How are wheat-grain production and N uptake intertwined with residual soil nitrate-N? We found that biosolids or N fertilizer rates plus the number of applications of each material produced planar-regression (3-dimensional) models with 15-years of grain yield and N uptake data (all R2 > 0.93). To evaluate how yield or N uptake impacted residual soil nitrate-N, we... |
| Tipo: Article |
Palavras-chave: Dryland crops; Small grain; Nitrogen; Soil quality. |
| Ano: 2010 |
URL: http://eprints.nwisrl.ars.usda.gov/1404/1/1374.pdf |
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| Tarkalson, D.D.; Brown, B.; Kok, H.; Bjorneberg, D.L.. |
| The effects of straw removal from irrigated wheat and barley fields cropped to wheat and barley on soil properties and nutrient cycling is a concern due to its potential impact on the sustainability of agricultural production. Increasing demand of straw for animal bedding and the potential development of cellulosic ethanol production will likely increase the demand in the future. Previous reviews addressing changes in soil properties when crop residues are removed focused primarily on rain-fed systems. This paper reviews published research assessing the effects of wheat and barley straw removal on soil organic carbon (SOC), and analyzes changes in nutrient cycling within irrigated wheat and barley production systems. The effects of straw removal on bulk... |
| Tipo: Article |
Palavras-chave: Dryland crops; Small grain; Soil. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1569/1/1525.pdf |
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| Registros recuperados: 36 | |
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