Read e-book online Agronomy of Grassland Systems PDF

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By Craig J. Pearson, Ray L. Ison

ISBN-10: 0511017626

ISBN-13: 9780511017629

ISBN-10: 0521560101

ISBN-13: 9780521560108

The demanding situations dealing with grassland agronomists have gotten more and more complicated, with environmental and moral matters assuming a better importance along extra traditional technical facets. This new elevated version, with an elevated emphasis on platforms pondering, has been revised to mirror present issues, wisdom and perform. As such it addresses the necessity for a special method of grassland agronomy, offering novel and provocative fabric to coach, stimulate and enthuse the reader.

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Amsterdam: Elsevier. C O N W A Y , G . R . ("ññâ). Sustainable agriculture: the trade-o¡s with productivity, stability and equitability. In Economics and Ecology. New Frontiers and Sustainable Development, ed. E. Barbier, pp. ãæ^åä. London: Chapman & Hall. I S O N , R . L . ("ññâ). Soft systems: a non computer view of decision support. In Decision Support Systems For the Management of Grazing Lands: Emerging Issues, eds J. W Stuth & B. G. Lyons, pp. ðá^""ä. UNESCO-Man and the Biosphere Book Series.

Characterize the situation in terms of identi¢able objects with well-de¢ned properties. á. Find general rules that apply to situations in terms of those objects and properties. â. Apply the rules logically to the situation of concern, drawing conclusions about what should be done (Winograd & Flores, "ñðæ, p. "ä). For example, from Le Houerou's ("ñðñ) work on the grazing ecosystems of the African Sahel, it is possible to identify a number of themes that make up his `way of thinking' and his way of constructing his working reality (his epistemology).

This led to a lot of research on the use of lime, which European and North American farmers have been able to a¡ord to apply to ameliorate their acidity. In Australia it did not work 27 for both practical and economic reasons ^ most of the acidity was at depth and it was impossible to get the lime deep enough without very expensive technology, and even with simple application methods it was too expensive. Researchers also sought plants, particularly other legumes, that were able to grow in these more acid soils.

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Agronomy of Grassland Systems by Craig J. Pearson, Ray L. Ison


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