Bøger i Developments in Plant and Soil Sciences serien

Proceedings of an International Workshop, Mayaguez, Puerto Rico, November 17-19, 1982

Countless other processes affecting the activity of soil micro flora and the inter actions between microorganisms and plants may pose an equal danger to soil equilibrium, but their potential hazards are often overlooked because of an insufficient understanding of soil microbiology on the part of scientists.

Proceedings of the Third International Symposium on Plant-Interactions at Low pH, Brisbane, Queensland, Australia, 12--16 September 1993

Report of an FAO/IAEA/SIDA Coordinated Research Programme on Isotopic Studies of Nitrogen Fixation and Nitrogen Cycling by Blue-Green Algae and Azolla

Proceedings of an International Conference, Rehovot, Israel, October 2-6, 1994

Proceedings of an International Symposium, June 9-12, 1987, Swedish University of Agricultural Sciences, Uppsala, Sweden

Proceedings of the Second International Symposium organized by the University of Wisconsin, June 16-20, 1985

The Third International Symposium on Nitrogen Fixation with Non-Legumes, Helsinki, September 2-8, 1984

The use of organic residues as a means of maintaining and increasing soil fertility is of long-standing. The trend to conserve energy has led scientists to study the minimal tillage system, to find ways of replacing conventional inorganic fertilizers with natural organic prod ucts or microbial preparations, and to develop new composting methods.

The mission of the International Fertilizer Development Center is to increase food production through the improvement of fertilizers and fertilizer practices for the developing countries with special emphasis on tropical and subtropical agriculture.

Proceedings of the Second Working Group Meeting of the Frontier Project on Nitrogen Fixation in Rice held in Faisalabad, Pakistan, 13-15 October 1996

In 2002, sixty international specialists met to discuss problems of high P-unavailability as a soil nutrient for crops, and the hazards of increased phosphate input to aquatic habitats from industrial and mining activities, sewage disposal, detergents, and other sources.

Suitable for scientists working on biological nitrogen fixation, soil microbial ecology and legume production, this volume reports the results of an FAO/IAEA Co-ordinated Research Programme (1992-1996), whose main objective was to develop molecular biological methods to study rhizobial ecology.

Report of an FAO/IAEA Technical Expert Meeting held in Rome, 13-15 March 2001

The idea of addressing the problem of the genetic specificity of mineral nutrition at an international level arose four years ago in a proposal for this topic to be included in the program of the II Congress of the Federation of European Societies for Plant Physiology (FESPP) as a separate section.

Proceedings of the International Symposium on Frankia and Actinorhizal Plants, held in Montmorency Forest, Laval University, Quebec, Canada on August 5-9, 1984

The use of organic residues as a means of maintaining and increasing soil fertility is of long-standing. The trend to conserve energy has led scientists to study the minimal tillage system, to find ways of replacing conventional inorganic fertilizers with natural organic prod ucts or microbial preparations, and to develop new composting methods.

The steadily increasing cost of nitrogen fertilizer has resulted in more emphasis on basic and applied studies to improve nitrogen use efficiency in lowland rice.

Proceedings of the Workshop `Soil and Water Quality at Different Scales' held 7-9 August 1996, Wageningen, The Netherlands

Emphasis in agricultural production has shifted from mere quantity to quality products. Therefore, balanced crop nutrition increases crop quality, safeguards natural resources and brings benefit to the farmer.

Broader in scope than classic references, this volume looks at the rhizosphere as a holistic entity by incorporating concepts from molecular biology. The text also identifies concepts that could lead to new management methods in ecological engineering.

Proceedings of the Third International Symposium on Plant-Interactions at Low pH, Brisbane, Queensland, Australia, 12--16 September 1993

The large and rapidly expanding body ofliterature related to nitrogen cycling in both managed and native terrestrial ecosystems reflects the importance accorded to the behaviour of this vital and often limiting nutrient.

Proceedings of the 4th International Symposium on Nitrogen Fixation with Non-Legumes, Rio de Janeiro, Brazil, August 23-28, 1987

In an era where climate change, natural catastrophes and land degradation are major issues, the conservation of soil and vegetation in mountainous or sloping regions has become an international priority. How to avoid substrate mass movementthroughlandslidesanderosionusingsustainableandecologicallysoundtechniquesisrapidlybecominga scienti?c domain where knowledge from many different ?elds is required. These proceedings bring together papers from geotechnical and civil engineers, biologists, ecologists and foresters, who discuss current problems in slope stabilityresearch,andhowtoaddressthoseproblemsusinggroundbio-andeco-engineeringtechniques.Aselection of papers were previously published in Special Editions of Plant and Soil (2005), volume 278, 1-179, and in the Journal of Geotechnical and Geological Engineering (2006), volume 24, 427-498. Ground bioengineering methods integrate civil engineering techniques with natural materials to obtain fast, effective and economic methods of protecting, restoring and maintaining the environment whereas eco-engineering has been de?ned as a long-term ecological strategy to manage a site with regard to natural or man-made hazards. Studies on slope instability, erosion, soil hydrology, mountain ecology, land use and restoration and how to mitigate theseproblemsusingvegetationarepresentedbybothscientistsandpractitioners.Papersencompassmanyaspectsof this multidisciplinary subject, including the mechanisms and modelling of root reinforcement and the development of decision support systems, areas where signi?cant advances have been made in recent years.

Soil acidity is a major limitation to crop production in many parts of the world. Plant growth inhibition results from a combination of factors, including aluminum, manganese, and hydrogen ion toxicities and deficiencies of essential elements, particularly calcium, magnesium, phosphorus, and molybdenum. Agricultural management practices and acid precipitation have increased acid inputs into the ecosystem and heightened concern about soil acidity problems. While application of lime has proved to be effective in ameliorating surface soil acidity in many areas, significant soil acidity problems still exist. Scientists from Alberta, Canada, recognized the need to provide a forum for researchers from different disciplines to exchange information and ideas on solving problems of plant growth in acid soils. As a result of their efforts, the First International Symposium on Plant-Soil Interactions at Low pH was held at Grande Prairie, Alberta, Canada, in July 1987. In many acid soil areas, liming materials are not readily available, the cost may be prohibitive, or subsoil acidity cannot be corrected by surface application of lime. New management approaches involving both the plant and the soil are needed in these situations. Progress has been made in the selection and breeding of acid-tolerant plants. However, continued progress will be limited by our lack of understanding of the physiological and biochemical basis of differential acidity tolerance among plants.