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| Registros recuperados: 601 | |
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| Ippolito, J.A.; Grob, J; Donnelly, A. |
| Biochar land application research in elevated rainfall areas (980 millimeters of annual rainfall) of the U.S. Pacific Northwest is lacking. A proof-of-concept field study examined the effects of spruce-pine-fir wood chip biochar (slow pyrolysis; 450-500 degrees Celsius; 35 megagrams per hectare), dairy manure compost (105 megagrams per hectare), compost + biochar (35 and 105 megagrams per hectare, respectively), and a control (no biochar or compost) on glacially altered soil (sandy or loamy skeletal, isotonic, mesic humic or aquic Dystroxerepts) chemical properties and growth characteristics of vetch and sweet corn over a growing season. In-season liming (5.4 megagrams per hectare) occurred to raise the soil pH for adequate crop growth. Biochar, alone... |
| Tipo: Article |
Palavras-chave: Chemistry; Manure; Research methodology; Fertility. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1595/1/1553.pdf |
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| Wortmann, C.C.; Shapiro, C.A.; Dobermann, Achim; Ferguson, Richard; Hergert, G; Walters, Daniel; Tarkalson, D.D.. |
| Alarm is expressed about the environmental impact of the increasing amount of reactive N in the atmosphere and in terrestrial and marine ecosystems around the globe. Much of this increase is attributed to production and use of N fertilizer. Use of fertilizer N is essential to meet growing global demand for agricultural commodities. Management is key to increasing productivity while also increasing N use efficiency and reducing N losses. A team of University of Nebraska-Lincoln scientists, with partial funding from the Nebraska State Legislature, addressed this challenge. They conducted 32 irrigated trials across diverse production conditions of Nebraska from 2002 to 2004 to evaluate corn response to rates of split-applied N. The results were reported in... |
| Tipo: Article |
Palavras-chave: Air Emissions; Chemistry; Fertilizer; Nitrogen; Soil. |
| Ano: 2011 |
URL: http://eprints.nwisrl.ars.usda.gov/1579/1/1535.pdf |
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| Jensen, M.E.; Sletten, W.H.. |
| In 1956 and 1957 grain sorghum represented 37 percent of the harvested crop acreage in Texas. The largest concentrated area of sorghum is in the High Plains where the proportion of sorghum irrigated increased greatly during the drought years of the 1950's. In 1959 the monetary value of irrigated grain sorghum was estimated to be about $100 million. As reported by the U.S. Census of Agriculture the acreages of irrigated grain sorghum harvested in the 42-county High Plains area in 1950, 1954, and 1959 were 387,000, 1 1 006,000, and 1,224,000 acres, respectively. The irrigated grain sorghum acreage in the eight counties—Castro, Deaf Smith, Floyd, Hale, Lamb, Lubbock, Farmer, and Swisher—represented over 80 percent of the total in the High... |
| Tipo: Technical Bulletin |
Palavras-chave: Sorghum; Soil water (soil moisture); Fertilizer; Chemistry; Evapotranspiration; Mass Import - autoclassified (may be erroneous). |
| Ano: 1965 |
URL: http://eprints.nwisrl.ars.usda.gov/1136/1/25.pdf |
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| Registros recuperados: 601 | |
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