Global ETD Search

Moving Virginia Dairy Farms Toward Phosphorus Balance

Pearce, Austin WillisVirginia Tech2020

… for Virginia dairy farms requires balancing phosphorus (P) imports and exports at the farm-gate level. Balancing P helps prevent further accumulation of P in farm soils through routine applications of manure, which over time contributes to surface water quality issues. The objectives of this …

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The effect of restraint on calcium and phosphorus balance and Ca⁴⁵ deposition in bones of immature Macaca Nemestrina primates

Chen, Amelia Su-HuiTexas Woman's University1971

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The utilization of phytate-phosphorus by the transition dairy cow

Lowry, Sarah2003

<p>Phytate phosphorus (pP) availability in rumen fluid was analyzed during the transition period of two heifers by in vitro and in situ incubations. Apparent digestibility (AD) of P during the transition period was measured and P balance determined. The study included three periods, a prepartum …

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Magnesium metabolism in sheep fed different levels of soluble carbohydrate and potassium

Giduck, Sharon A.Virginia Polytechnic Institute and State University1982

… had no consistent effects on calcium and phosphorus balance and absorption. Sodium absorption in the small intestine was increased (P<.05) by the high level of soluble carbohydrate. Increased dietary potassium increased sodium availability and urinary excretion (P<.05). Calcium was …

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Poultry Litter as a Nutrient Source for Low Input Forage Systems

McGrath, Steven RussellVirginia Tech2009

… Forage yield, soil pH, Mehlich 1 P (M1P), P balance, water soluble phosphorus (WSP), shifts in aboveground botanical composition, seed bank composition, and species richness (SPR) were monitored during this experiment. In addition, we examined whether poultry litter carries germinable weed …

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Erarbeitung einer P-Bilanz im Rahmen eines Konzeptes zur Sanierung und Restaurierung des Rangsdorfer Sees

Frauenstein, AndreaUniversität Potsdam

Der Rangsdorfer See (A = 2,44 km² , z(max) = 6 m, z(mean) = 1,930 m) im Landkreis Teltow Fläming ist einer von vielen Gewässern in Brandenburg, die derzeit den nach EU-Wasserrahmenrichtlinie geforderten guten Zustand nicht erreichen. Bekanntlich gilt Phosphor für viele Gewässer als der bedeutendste …

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