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

By Craig J. Pearson, Ray L. Ison

The demanding situations dealing with grassland agronomists have gotten more and more advanced, with environmental and moral matters assuming a better value along extra traditional technical features. This new improved version, with an elevated emphasis on structures pondering, has been revised to mirror present matters, wisdom and perform. As such it addresses the necessity for a distinct method of grassland agronomy, delivering novel and provocative fabric to teach, stimulate and enthuse the reader.

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So di¡erent grassland systems can also be seen as special cases of a social technology (Postman, "ññá). It is possible to imagine groups of people developing their own sets of practices and understandings, which were used for their own purposes. These di¡erent forms of grassland systems can be seen from a number of perspectives and as achieving a number of ends. In much of the world grassland systems are seen as a subsystem of agriculture and we tend to still see the basic unit as `the farm'. However this is culturally determined and clearly di¡ers in, for example, familial pastoral societies.

3 Stepping outside our traditions As stated earlier, an inevitable experience of being embedded in any tradition is that we are not aware of the prejudices (pre-understandings) that shape our thinking and our action. Thus when the acid soil problem became apparent the ¢rst response of scientists, embedded in a tradition that involved legume based pastures, was to do research aimed at ¢xing the existing system. 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.

2 Technologies that reveal and conceal ^ a case study In southern Australia there has been recent concern that the sustainability of grasslands is declining (Williams, "ññ"; Kemp & Michalk, "ññã). The network of issues and concerns are depicted in Fig. â. This ¢gure conveys the interconnectivity of these issues. It also demonstrates how both stability and sustainability are threatened by a focus on only one, or a limited number, of the issues depicted. The way in which this has happened historically is exempli¢ed by the emergence of the acid soil problem under legume based pastures.

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