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Trusted PartnerThe environmentMay 1997
Phosphorus Loss from Soil to Water
by Edited by H Tunney, P C Brookes, A E Johnston
Phosphorus is an essential element for plant growth and its input has long been recognised as necessary to maintain profitable crop production. However, phosphorus inputs can also increase the biological activity of surface waters and this can lead to the destruction of such aquatic ecosystems. Advanced eutrophication of surface water leads to problems with its use for fisheries, recreation, industry and drinking, due to the increased growth of undesirable algae and aquatic weeds, and oxygen shortages caused by their death and decomposition. It is therefore important to have a good understanding of the causes and mode of phosphorus loss from soil to water, to enable the problems to be controlled and managed. This book has been developed from an international workshop held in Ireland in late 1995. It is the first comprehensive consideration of the topic, and many leading researchers in the area have contributed to it. It is essential reading for all soil scientists and freshwater biologists, as well as for environmentalists, ecologists and agriculturalists concerned with sustainable land management and pollution. The book is also recommended to fisheries managers, fertilizer manufacturers and biologists working for water utilities.
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Trusted PartnerTechnology, Engineering & AgricultureSeptember 2016
Harnessing Dividends from Drylands
Innovative Scaling up with Soil Nutrients
by K V Raju, S P Wani
The livelihoods of millions of people in developing countries, which depend on dryland agriculture to ensure their food security and their well-being, could be improved measurably by gains in agricultural crop yields. This book describes lessons learnt from an innovative scheme in India that improved crop yields in drylands. It shows how the scheme can be scaled up for other dryland regions of the world. The scheme uses localized soil nutrient analyses to create an integrated, climate smart fertilizer and planting plan that maximises yields for farmers. This book describes how a partnership between a global scientific organization (such as International Crops Research Institute for the Semi-Arid Tropics, ICRISAT) and state and non-state actors can provide a route to equitable growth, specifically for small and marginal farmers, and how this approach can be replicated worldwide to enhance rural livelihoods. This strategic collaboration and its conceptual and functional design is fully outlined, as well as the scheme's implementation and the effective monitoring and learning process that has been created. ; This book describes lessons learnt from an innovative scheme in India that improved yields in drylands. It shows how the scheme can be scaled up for other Dryland regions of the world. The scheme uses localised soil nutrient analyses to create an integrated, climate-smart fertilizer and planting plan that maximises yields for farmers. ; 1: Dry Lands for Food Security: A Macro Perspective2: Evolution of Bhoochetana3: Soil Nutrient Mapping for On-farm Fertility Management4: Human Capacity Development to adopt Best Practices5: Digital Technologies for Agricultural Extension6: Institutional Arrangements and Innovations7: Climate Variability and Agriculture8: Crop Yield Estimation Strategy9: An Integrated Approach for Productivity Enhancement10: Water Productivity and Income11: Social and Economic Benefits12: Lessons Learnt and a Way Forward
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Trusted Partner
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Trusted PartnerAnimal husbandryOctober 1998
Response in the Yield of Milk Constituents to the Intake of Nutrients by Dairy Cows
by P C Thomas, David E Beever, P J Buttery, J C MacRae, J D Oldham. Edited by Geoffrey Alderman.
This report reviews the energy and protein requirement systems for dairy cows currently used in Britain and presents a new approach, along with the outline of a model for its implementation. Current systems give little consideration to the responses of the animal to changes in the nutrient supply, or to interactions between dietary constituents in their effects on digestion and metabolism. Neither do they predict any effect on the partition of nutrient use between milk and body, or changes in the yields of milk fat, protein and lactose, which determine the commercial value of the milk. Therefore the systems, although not inaccurate, lack relevance to the current needs of UK milk producers. Models which embody concepts of nutrient supply and utilization are reviewed and their development as viable alternatives is considered. It is concluded that a new diet formulation system for dairy cows should aim to predict voluntary feed intake, the partition of nutrient use between milk production and tissue deposition, and the short and long-term of effects of nutrition on fat, protein and lactose yields. The physical and biological characteristics of the cow must also be recognized and incorporated into any model for response prediction. The report is also published in Nutrition Abstracts and Reviews - Series B: Livestock Feeds and Feeding. It is an authoritative review for advanced students, research workers and advisors in animal nutrition and in dairy science and technology.
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Trusted Partner
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Trusted PartnerJanuary 1995
Eine eigene Geschichte - Frauen in Europa
Verschüttete Spuren. Frühgeschichte bis 18. Jahrhundert
by Anderson, Bonnie S; Zinsser, Judith P / Englisch Biegger Scharz, Katharina
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Trusted PartnerAnimal breedingSeptember 2004
Muscle Development of Livestock Animals
Physiology, Genetics and Meat Quality
by Edited by Marinus F W te Pas, Henk P Haagsman, Maria E Everts
Well-developed and functional muscle tissues are a prerequisite for healthy meat-producing animals. Good muscle development leads to improved meat quality. Hence modern breeds of livestock animal have been selectively bred for better conformation, increased muscle size and increased muscle-to-bone ratio. This book describes all aspects of muscle development research, and contains contributions from leading research groups around the world.
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Trusted PartnerInsecticide & herbicide technologyMarch 1997
Methods in Ecological and Agricultural Entomology
by Edited by David R Dent, M P WaltonEdited by M P Walton
Entomology as a branch of biological science has undergone rapid expansion and development in recent decades. There have been major advances in the technologies associated with pest management and the ecological studies that underpin much of this work. Greater emphasis is now placed on topics such as modelling and biochemical techniques, with new approaches to the study of insect behaviour and insecticide efficacy making inroads into traditional approaches. This book aims to integrate the new approaches and technologies with traditional and well-proven methods. It provides a critical analysis and evaluation of methods available, through reference to general principles, but emphasis is also placed on providing detailed descriptions of methods and their application. Written by leading authorities from the UK, USA and Australia, the book is aimed at advanced undergraduate and postgraduate students in entomology and pest management.
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Trusted PartnerJune 2012
Die UdSSR und die deutsche Frage 1941–1949. Dokumente aus russischen Archiven. 4 Bände. Bearb. und hrsg. von Jochen P. Laufer / Georgij P. Kynin unter Mitarbeit von Viktor Knoll (Bd. 1–3) / Kathrin König (Bd. 4) / Reinhard Preuß (Bd. 4).
Bd. 1: 22. Juni 1941 – 8. Mai 1945. Tab., Abb.; CXVI, 715 S.; Bd. 2: 9. Mai 1945 – 3. Oktober 1946. Tab., Abb.; CXLVIII, 805 S.; Bd. 3: 6. Oktober 1946 – 15. Juni 1948. Tab., Abb.; CXVI, 780 S.; Bd. 4: 18. Juni 1948 – 5. November 1949. CXXX, 736 S.
by Herausgegeben von Laufer, Jochen P.; Herausgegeben von Kynin, Georgij P.; Mitherausgeber Knoll, Viktor
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Trusted PartnerAugust 2010
Holzbrandkeramik in Mecklenburg-Vorpommern
Aktionen, Technik und Akteure
by Gass, Monika; Kaden, Antje; Matthes, Wolf; Jakobson, Hans P; Planke, Jens P; Böhm, Markus; Rieger, Armin
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Trusted PartnerJanuary 1995
Eine eigene Geschichte - Frauen in Europa
Aufbruch. Vom Absolutismus zur Gegenwart
by Anderson, Bonnie S; Zinsser, Judith P / Englisch Holenstein Weidmann, Pia
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Trusted PartnerJanuary 1988
Rudolf Steiner: Praktizierte Anthroposophie
Beiträge für ein humaneres Leben
by Becker, Kurt E; Schreiner, Hans P
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Trusted Partner
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Trusted PartnerJanuary 1985
Rudolf Steiner und seine Kritiker
Versuch einer Auseinandersetzung
by Becker, Kurt E; Schreiner, Hans P
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Trusted PartnerBotany & plant sciencesJune 2000
Hemp Diseases and Pests
Management and Biological Control
by John M McPartland, Robert C Clarke, David P Watson
Hemp is enjoying a worldwide resurgence. This unique book combines a review of the hemp pest and disease literature published over the past 50 years with up-to-date information on modern biological control techniques. Each pest and disease organism is presented in the same format, covering economic impact, geographical and host-plant range, plant symptoms, taxonomic description, life history, and differential diagnosis. Important cultural, mechanical, biological and chemical controls are highlighted with charts, illustrations and explicit instructions. Easy-to-use keys are included for rapid identification of the most common pests. Introductory chapters describe the general principles of plant protection, requirements for healthy plant growth, and taxonomy of parasites and pathogens.
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Trusted PartnerJanuary 1989
Rudolf Steiner
Der anthroposophische Weg
by Becker, Kurt E; Schreiner, Hans P; Hiebel, Friedrich
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