Soil quality management : benefits and problems in agricultural use / by Diana Wilkins.

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Include bibliographical references and index

1. Soil quality management — concepts and terms -- 2. Soil quality, fertility and health — historical context, status and perspectives -- 3. Soil acidity — resilience and thresholds -- 4. Tightening the nitrogen cycle -- 5. Phosphorus — surplus and deficiency -- 6. Sustainable management of potassium -- 7. Developing and maintaining soil organic matter levels -- 8. Microbial diversity in soil — effects on crop health -- 9. Biological soil quality from biomass to biodiversity — importance and resilience to management stress and disturbance -- 10. Subsoil compaction and ways to prevent it --11. Management-induced soil structure degradation - organic matter depletion and tillage -- 12. Soil erosion - processes, damages and countermeasures -- 13. Recyclable urban and industrial waste - benefits and problems in agricultural use -- 14. Pesticides in soil - benefits and limitations to soil health -- 15. Systems approaches for improving soil quality -- 16. Implementing soil quality knowledge in land-use planning -- 17. Soil quality in industrialized and developing countries - similarities and differences -- 18. Soil quality management - synthesis -- Index

The industrialization |of| agriculture and the concurrent increase in societal concerns on environmental
protection and food quality have put the focus on agricultural management and its impact on soil quality
Soil quality involves the ability of the soil to maintain an appropriate productivity while simultaneously
reducing the effect on the environment an contributing to human health. This development has changed
society is expectations of science and there is an urgent need to improve the communication among
researchers from different scientific disciplines the interaction of scientists with decision makers is topic
of utmost relevance for future developments in agriculture. Reflexive objectivity denotes the exercise of
raising one's consciousness of the cognitive context in societal priorities and thew values and goals of the
researcher .The term sustainability comprehends the priorities in the cognitive context and thus constitutes
valuable tool for expressing the basis of scientific work. Soil quality evaluations should include awareness of the stability of any given quality attribute to disturbance and stress. This implies addressing resistance and resilience of the soil functions and/or the physical form in question. Most existing literature on soil quality focuses on assessment of soil quality rather than the management tools available to influence soil quality. Identification of management thresholds rather than soil quality indicator thresholds is suggested as an important means of implementing the soil quality concept. The major challenges facing modern
agriculture include proper nutrient cycling maintained functions and diversity of soil protection of and
appropriate physical form and avoidance of| chemical contamination. It is suggested that these challenges
and problems as related to the soil quality concept are discussed in the framework expounded above.

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