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- W4234019862 abstract "A quantitative knowledge of P cycling in dairy farms during a production cycle is the basis for optimizing fertilizer P management, because utilization of P by farm animals and its transfer to barn products are incomplete; animal manure represents a valuable source of P to sustain crop requirements. The nutrient content of manure is always difficult to determine precisely, because of the variability and fluctuation in daily water content and composition. Estimates of the P content of each material that moves to, from and within a dairy farm located in Lombardy were determined for one year by collecting farm data, sampling and analyzing farm materials (feeds, beddings, milk, hays and silage, etc.) and estimating through model calculation P retained in animals and in farm wastes. Two subcycles were investigated: the barn subcycle and the soil-crop subcycle, connected together by wastes, grasses and corn silage. The overall P balance in the farm studied with total stocking of 1.1 t of liveweight/ha, indicated a high manure potential for crop-needs that excludes use of inorganic P fertilizers. Moreover, detailed analysis of the various P pools has shown the relative contribution of each component to P cycling at the farm." @default.
- W4234019862 created "2022-05-12" @default.
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- W4234019862 date "1994-01-01" @default.
- W4234019862 modified "2023-09-30" @default.
- W4234019862 title "5260656 Method for improving the resolution of solid-state NMR multiple-pulse imaging systems" @default.
- W4234019862 doi "https://doi.org/10.1016/0730-725x(94)92312-4" @default.
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