Download or read book Silage Making in the Tropics with Particular Emphasis on Smallholders written by Food and Agriculture Organization of the United Nations and published by Fao. This book was released on 2000 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silage has always been an integral component of temperate feeding systems worldwide, as a means to ensure year-round feed supply for high production animals. However, its use in the tropics has been restricted to isolated cases, usually involving higher-return enterprises and, in particular, the dairy industry. What are the reasons for its apparent lack of application in the tropics? The paper "Silage making in the tropics with particular emphasis on smallholders" documents the proceedings of an electronic conference that examined both this question and the various aspects of silage making in the tropics. Specifically, it reviewed the potential for use of tropical silage for livestock production, with special reference to the smallholder situation.

Download or read book Ars veterin ria written by and published by . This book was released on 2001 with total page 664 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Brachiaria written by John W. Miles and published by CIAT. This book was released on 1996 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: Identifying and naming Brachiaria species. Morphology, taxonomy, and natural distribution of Brachiaria (Trin.) Griseb. Natural variation in Brachiaria and existing germplasm collections. The agronomy and physiology of Brachiaria species. National requirementes of Brachiaria and adaptation to acid soils. Nutrient cycling and environmental impact of Brachiaria Pastures. Pests and diseases of Brachiaria species. Nutritional quality and animal production of Brachiaria pastures. Reproductive physiology, seed production, and seed quality of Brachiaria. Seed production: perspective from the Brazilian private sector. Genetic, cytogenetics, and reproductive biology of Brachiaria. Manipulation of apomixis in Brachiaria breeding. Theoretical potential of biotechniques in crop improvement. Aplication of biothecnology to Brachiaria. Regional experience with Brachiaria: Tropical America-humid lowlands. Regional experience with Brachiaria: Tropical America-savannas. Regional experience with Brachiaria: Sub-savannas Africa. Regional experience with Brachiaria: Asia, the South Pacific, and Australia. Reports of working groups.

Download or read book Acta Scientiarum written by and published by . This book was released on 2000 with total page 668 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Australian Journal of Agricultural Research written by and published by . This book was released on 2000 with total page 442 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Acta amazonica written by and published by . This book was released on 2009 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt: Each issue to contain material in each of seven subject fields: botany, forestry research, environmental sciences, phytochemistry, tropical medicine, zoology and technology.

Download or read book Southern Forages written by Donald M. Ball and published by . This book was released on 1996 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book BOTANAL written by Campbell Kenneth McDonald and published by . This book was released on 1992 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Forage Evaluation written by J. L. Wheeler and published by . This book was released on 1981 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Phosphorus written by Rattan Lal and published by CRC Press. This book was released on 2016-09-19 with total page 351 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus is an essential plant nutrient, but global population growth has dramatically reduced the availability of phosphorus fertilizer resources. Despite this scarcity, there remain numerous problems associated with the excessive and inappropriate use of phosphorus leading to non-point source pollution and eutrophication of natural waters. Identifying appropriate systems for managing soil phosphorus and reducing the risks of eutrophication are needed to minimize the environmental risks. This book focuses on the availability and recycling of phosphorus; regulatory and policy issues of sustainable phosphorus use; and water quality management in agroecosystems pertaining to phosphorus. Sections are dedicated to global phosphorus reserves; cycling and pathways of phosphorus; phosphorus in agriculture; human dimensions and policy intervention; and research and development priorities. Phosphorus is a finite but crucial resource and is an essential element to all life. Sub-optimal availability and nutrient imbalance in the root zone can adversely impact plant growth, and the quality of food and feed grown on these soils. However, the proven reserves of phosphorus can hardly be adequate for a few centuries only. Yet, its misuse and mismanagement has caused severe problems of eutrophication of water and pollution of the environment. Thus, judicious management of soil phosphorus is essential. This volume is specifically devoted to availability and recycling of phosphorus, regulatory/policy issues of sustainable use of phosphorus, and management in agroecosystems in the context of maximizing the use efficiency and minimizing the environmental risks of water quality.

Download or read book Assessment of Soil Nutrient Balance written by Rabindra N. Roy and published by Food & Agriculture Org.. This book was released on 2003 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nutrient-balance assessments are valuable tools for delineating the consequences of farming on soil fertility. Various approaches and methods for different situations have been used in the past. This bulletin presents a state-of-the-art review of nutrient balance studies. It brings out the evolution of the approaches and methods, provides for comparisons among them, features the improvements made, and highlights remaining issues. This analysis will be useful in further development of the assessment methodologies as reliable tools for devising time-scale soil fertility management interventions.

Download or read book Nitrous Oxide and Climate Change written by Keith Smith and published by Routledge. This book was released on 2010-08-12 with total page 238 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrous oxide, N2O, is the third most important (in global warming terms) of the greenhouse gases, after carbon dioxide and methane. As this book describes, although it only comprises 320 parts per billion of the earth's atmosphere, it has a so-called Global Warming Potential nearly 300 times greater than that of carbon dioxide. N2O emissions are difficult to estimate, because they are predominantly biogenic in origin. The N2O is formed in soils and oceans throughout the world, by the microbial processes of nitrification and denitrification, that utilise the reactive N compounds ammonium and nitrate, respectively. These forms of nitrogen are released during the natural biogeochemical nitrogen cycle, but are also released by human activity. In fact, the quantity of these compounds entering the biosphere has virtually doubled since the beginning of the industrial age, and this increase has been matched by a corresponding increase in N2O emissions. The largest source is now agriculture, driven mainly by the use of synthetic nitrogen fertilisers. The other major diffuse source derives from release of NOx into the atmosphere from fossil fuel combustion and biomass burning, as well as ammonia from livestock manure. Some N2O also comes directly from combustion, and from two processes in the chemical industry: the production of nitric acid, and the production of adipic acid, used in nylon manufacture. Action is being taken to curb the industrial point-source emissions of N2O, but measures to limit or reduce agricultural emissions are inherently more difficult to devise. As we enter an era in which measures are being explored to reduce fossil fuel use and/or capture or sequester the CO2 emissions from the fuel, it is likely that the relative importance of N2O in the 'Kyoto basket' of greenhouse gases will increase, because comparable mitigation measures for N2O are inherently more difficult, and because expansion of the land area devoted to crops, to feed the increasing global population and to accommodate the current development of biofuels, is likely to lead to an increase in N fertiliser use, and thus N2O emission, worldwide. The aim of this book is to provide a synthesis of scientific information on the primary sources and sinks of nitrous oxide and an assessment of likely trends in atmospheric concentrations over the next century and the potential for mitigation measures.

Download or read book Terminology for Grazing Lands and Grazing Animals written by Forage and Grassland Terminology Committee and published by . This book was released on 1991 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two years in the making, this book represents the combined effort of scientists in Australia, New Zealand, and the United States and of some 16 organizations and agencies including the American Forage and Grassland Council. It has been adopted by these 16 and numerous other organizations world-wide as the definitive standard for word usage in the science.

Download or read book Southern Forages written by Donald M. Ball and published by . This book was released on 2007-01 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book Southern Forages has since gained wide recognition as a practical and reliable source of information on modern forage crop management. It is used by livestock producers, by seed, equipment and fertilizer dealers, by extension and conservation workers, and by teachers as a text for students learning about forages.

Download or read book Soil Fertility Improvement and Integrated Nutrient Management written by Aleix Campo and published by . This book was released on 2016-09-01 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt: Crops need air, sun, water, and soil to thrive. When it comes to soil, however, quality usually trumps quantity. Rich and fertile land boasts a healthy mixture of phosphorous, potassium, and nitrogen, along with water, air, and soil microorganisms that break down organic matter. Soil is an incredibly complex substance. It has physical and chemical properties that allow it to sustain living organisms -- not just plant roots and earthworms, but hundreds of thousands of different insects, wormlike creatures and micro-organisms. When these organisms are in balance, soil cycles nutrients efficiently, stores water and drains the excess, and maintains an environment in which plants can thrive. Plant nutrition is only one of more than fifty factors which directly affect both crop yield and quality. The availability of required nutrients, together with the degree of interaction between these nutrients and the soil, play a vital role in crop development. A deficiency in any one required nutrient or, a soil condition that limits or prevents a metabolic function from occurring can limit plant growth. A soil nutrient management plan should include analysing soil deficiencies to determine the type, application rate, application interval, and the placement of any nutrients required to optimise short and long term productivity. Soil nutrient management involves not only the physical properties and mineral structure of the soil, but also the balance between soil pathogens and beneficial microbes. Beneficial microbes increase nutrient availability, reduce disease, reduce nutrient losses, and help degrade toxic compounds. This book provides a basic introduction to the biological, chemical, and physical properties affecting soil fertility and plant nutrition. The advances in the field of soil fertility are described in this book along with information regarding nutrient management.

Download or read book Protecting our water soil and air written by Great Britain: Department for Environment, Food and Rural Affairs and published by Stationery Office. This book was released on 2009-02-24 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: This code (CoGAP) consolidates and updates the former three separate codes for water, soil and air. The publication offers practical interpretation of legislation and provides good advice on best practice; 'good agricultural practice' means a practice that minimises the risk of causing pollution while protecting natural resources and allowing economic agriculture to continue. It has been written by technical specialists from Defra and Natural England. All farm staff and contractors on the farm who handle, store, use, spread or dispose of any substances that could pollute water, soil or air should be aware of their responsibilities and know about the causes and results of pollution. They should know how and when to operate and maintain the equipment they use, and know what to do in an emergency. The CoGAP provides an important point of reference, based around the main operations that farmers, growers and land managers might undertake; the advice covers activities carried out in the field, but also management plans, farm infrastructure and waste management.

Download or read book The World s Challenge written by Marion Guillou and published by Springer. This book was released on 2014-07-08 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt: If a global population of 9 billion by 2050 is to be fed adequately, more food must be produced and this in keeping with increasingly stringent standards of quality and with respect for the environment. Not to mention the land that must be set aside for the production of energy resources, industrial goods, carbon storage and the protection of biodiversity.