Download or read book Fertilization of Protected Crops written by and published by . This book was released on 1968 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Air Pollution and Ecosystems written by P. Mathy and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the concluding session of the symposium "Acid Deposition, a Challenge for Europe" held in Karlsruhe in September 1983, Dr. GINJAAR, the former Minister of Health and Environmental Protection of the Netherlands, emphasised the need for setting up a concerted research programme including the effects of air pollution on terrestrial and aquatic ecosystems. The Council of Ministers of the European Community in 1984 adopted a revision of the 3rd Community Programme on Environment comprising contract research and concerted action in the field of the effects of air pollution in eco systems. These research areas were also introduced in the 4th R-D Community Programme on Environment, adopted by the Council of Ministers in 1986 and are subject again to contract research and concerted action. The Commission of the European Community is very concerned to increase the effectiveness of researcn projects carried out within the national programmes, and those undertaken at the Community level. The Commission tends to develop an integrated scientific approach, including not only the physico-chemical behaviour, the transport and the deposition of airborne pollutants but also the effects of these pollutants, in particular on living organisms and ecosystems. With regard to the specific issue of the effects, the Commission is trying to develop and strengthen a multi-disciplinary approach associating biologists, pathologists, eco physiologists, and specialists of soil sciences, within the concerted action, as well as within coordinated research projects.
Download or read book Miscellaneous Publication written by and published by . This book was released on 1940 with total page 850 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil and Plant Testing and Analysis written by and published by Food & Agriculture Org.. This book was released on 1980 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environment in Key Words written by Isaac Paenson and published by Elsevier. This book was released on 2016-06-28 with total page 978 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental problems ignore international boundaries. Toxic wastes travel by water and air, sometimes displacing the effects of an environmental disaster entirely outside of its country of origin. It is now understood that to overcome the problems that face us international co-operation is required. This important work is designed to assist in that process, by helping to break down the language barriers that stand between countries. The manual, written in parallel English, German, French and Russian texts, provides the basic tools of communication in the specialized fields of environmental sciences between speakers of these languages. Each chapter has been revised in each separate language by specialists in the field to guarantee the authenticity of the information presented. The author is unique in his approach, presenting the key-words in context, as opposed to simple glossary entries, allowing the reader to fully understand the complex relations between the word and the concepts involved. A comprehensive index written in all four languages guides the reader through the text, providing references to the words as they are used in different disciplines.
Download or read book The Fifth Regional Wheat Workshop written by Maarten van Ginkel and published by CIMMYT. This book was released on 1988 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alleviating Soil Fertility Constraints to Increased Crop Production in West Africa written by A. Uzo Mokwunye and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: Tropical Africa escaped from the glaciers that covered the temperate parts of the world during the Ice Age. The legacy is that most of the parent materials of the soils of tropical Africa are old, highly weathered and devoid of bases and phosphate-bearing minerals. Traditional farming systems which were relatively stable and sustainable relied on long fallow periods after one to two years of cropping to maintain the productive capacity of the soils. In recent times and especially in densely populated areas, a sizeable class of 'landless' farmers have begun to cultivate marginal lands or to invade the 'forest reserves' thereby exacerbating the problems of land and environ mental degradation. of soil fertility that will facilitate the production of adequate quantities of the principle Maintaining a level staples has become a major challenge to agricultural scientists in tropical Africa. To increase the nutrient supplying power of soils requires the inputs of fertilizers. These can be organic or inorganic. The efficiency with which these externally supplied inputs can increase agricultural production and reduce soil and environmental deterioration is dependent on the ability of scientists to determine the right types and quantities of the products to apply to each soil, crop and cropping system as well as the ability of farmers to acquire requisite farm manage ment skills.
Download or read book Demand driven technologies for sustainable maize production in West and Central Africa written by and published by IITA. This book was released on with total page 526 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Livestock and Sustainable Nutrient Cycling in Mixed Farming Systems of Sub Saharan Africa Technical papers written by J. M. Powell and published by ILRI (aka ILCA and ILRAD). This book was released on 1994-01-01 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Technical papers. Setting the scene. Interactions between animals and plants. Interactions between animals and soils. Interactions between plants and soils. Nutrient cycling in mixed farming systems. Modelling nutrient cycles in plant/animal/soil systems.
Download or read book Integrated Approaches to Higher Maize Productivity in the New Millennium written by and published by CIMMYT. This book was released on 2004 with total page 550 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Basic Technics in Ecological Farming Techniques de Base en Agriculture Biologique Grunds tzliche Verfahren der kologischen Landwirtschaft Le Maintien de la Fertilit des Sols The Maintenance of Soil Fertility Die Erhaltung der Bodenfruchtbarkeit written by Stuart Hill and published by Birkhäuser. This book was released on 2013-12-14 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fili re p pini re de la production la plantation written by FOUCARD Jean-Claude and published by Lavoisier. This book was released on 2008-08-20 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synthèse consacrée aux végétaux ligneux d'ornement, fruitiers et forestiers, cet ouvrage sur la Filière pépinière, présente la filière professionnelle, son organisation, son poids économique en France et sur le plan international. Le volet technique, intégrant les plus récents acquis dans le domaine, s'étend de la production en pépinière jusqu'à la plantation : sélection variétale, techniques culturales, matériels spécifiques. La qualité du produit et la protection de l'environnement sont largement abordées avec une description complète de l'éventail réglementaire. Ces thèmes majeurs sont illustrés d'exemples concrets issus de la recherche ou des entreprises. Innovant et très complet, ce volume est devenu rapidement une référence pour les professionnels, enseignants et étudiants de la filière de la pépinière et du paysage.
Download or read book Biological Nitrogen Fixation and Sustainability of Tropical Agriculture written by African Association for Biological Nitrogen Fixation. Conference and published by IITA. This book was released on 1992-10-27 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological nitrogen fixation in tropical agrosystems: twenty years of biological nitrogen fixation research in Africa; Sustainable agriculture: definition and measurement; Biological nitrogen fixation systems in tropical ecosystems: an overview; A protocol for screening legumes as soil-improving crops; The sustenance of tropical agriculture with multipurpose azolla; Facteurs pedoclimatiques limitant la lixation biologique l'azole; Response of some tropical nitrogen-fixing woody legumes to drought and inoculation with mycorrhiza; Improvement to the Phaseolus/Rhizobium symbiosis, with particular reference to the Caribbean region; Effect of pest management systems on biological nitrogen fixation; Agronomic evaluation of a rock phosphate as a phosphorus source for Leucaena leucocephala grown on an utisol; Nodulation of soybean grown under field conditions and inoculated with Bradyrhizobium japonicum strains; Effect of fertilization and Rhizobium inoculation on the growth of Leucaena and Gliricidia on an alfisol in south-western Nigeria; Early growth and nodulation in Leucaena and Gliricidia and the effects or pruning on biomass productivity; Comparative stude on the growth and productivity of Sesbania and Leucaena in the Central Plateau region, Rwanda; Supernoculation and non-nodulation mutants of soybean; Genetically improved rhizobia and their use in agriculture; Sustainability of nitrogen-fixing cropping systems: Nodulation and nitrogen fixation and transfer in a cowpea/rice cropping system; The role of legumes in sustaiing soil productivity and controlling soil erosion; Fitting soil-improving legumes into inland valley rice-baes cropping systems in West Africa; Herbage yield and soil fertility restoration potential of some tropical forage legumes.
Download or read book Nitrogen Fertilization and Wheat Quality written by Fajer Fajersson and published by . This book was released on 1961 with total page 202 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book R le de la fertilisation dans l intensification de la production agricole written by International Potash Institute and published by . This book was released on 1973 with total page 489 pages. Available in PDF, EPUB and Kindle. Book excerpt:
