Darryl Jones's Agriculture Trade And The Environment The Dairy Sector PDF

By Darryl Jones

ISBN-10: 9264015884

ISBN-13: 9789264015883

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Methane production from enteric fermentation in dairy cows is the most significant source of GHG emissions in all OECD countries, accounting for between 50% (United States) and 80% (Australia) of total dairy farming GHG 44 emissions. Variations in the share of methane and nitrous oxide emissions from manure management and manure applied to the soil reflect differences in farming systems between countries, in particular the amount of time animals spend grazing on pasture, and the types of manure management systems used to store manure collected in housing facilities and milking parlours.

Htm. Using the information contained in the OECD nitrogen soil balance indicator, it is possible to identify changes in the level of risk associated with milk production. 3). This is likely to underestimate the contribution of dairy to nitrogen input because it does not take into account nitrogen manure from other dairy animals (calves, heifers and bulls), nitrogen fertilizer applied on dairy farms, nor the biological nitrogen fixation by legumes such as clover used in certain dairy grazing systems.

Livestock ammonia emissions account for over 80% of agricultural emissions. The share of dairy in total livestock ammonia emissions varies across OECD countries according to the relative importance of the dairy sector in national livestock production, although the shares broadly reflect those of dairy in total livestock nitrogen manure. Dairy housing units generate dust and micro-organisms, of particular concern to those working in these units and people living in the vicinity of dairy farms. The main sources include feed and faecal material, and possibly bedding.

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Agriculture Trade And The Environment The Dairy Sector (Agriculture, Trade and the Environment) by Darryl Jones

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