Advances in Agronomy v106 by Donald L. Sparks (Eds.)

By Donald L. Sparks (Eds.)

Advances in Agronomy remains to be well-known as a number one reference and a major resource for the newest learn in agronomy. As continually, the topics coated are various and exemplary of the myriad of material handled by way of this long-running serial. * keeps the top impression issue between serial guides in agriculture * provides well timed experiences on vital agronomy concerns * Enjoys a long-standing attractiveness for excellence within the box

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42 J. B. Passioura and J. F. Angus to that of Rockstro¨m and Falkenmark (2000) for Sub-Saharan Africa. In fact, the main limiter seems to have been risk management. The collective experience of the farmers was that crops that grew too fast during their vegetative phase tended to produce low yields. This happened irrespective of whether they boosted crop growth with high rates of fertilizer or high plant density. 3). After experiencing hayed-off crops, farmers became cautious about applying high rates of fertilizer or seed to produce high yields.

2007). Soil freeze-thaw cycle experiments: Trends, methodological weaknesses and suggested improvements. Soil Biol. Biochem. 39, 977–986. , Jenkins, G. , Turnpenny, J. , Mitchell, T. , Jones, R. , Murphy, J. , and Hill, S. (2002). Climate Change Scenarios for the United Kingdom: The UKCIP02 Scientific Report. Tyndall Centre for Climate Change Research, Norwich. Intergovernmental Panel on Climate Change. (2001). Climate Change 2001: Impacts, Adaptations and Vulnerability. Cambridge University Press, Cambridge.

2007). Dynamics and microbial dynamics in two subarctic ecosystems during winter and spring thaw: Effects of increased snow depth. Arct. Antarct. Alp. Res. 39, 268–276. Lehrsch, G. , Sojka, R. , Carter, D. , and Jolley, P. M. (1991). Freezing effects on aggregate stability affected by texture, mineralogy and organic matter. Soil Sci. Soc. Am. J. 55, 1401–1406. Lipson, D. , Schmidt, S. , and Monson, R. K. (2000). Carbon availability and temperature control the post-snowmelt decline in alpine soil microbial biomass.

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