Download or read book Nutrient Management Over Extended Cropping Periods in the Shifting Cultivation System of South west C te D lvoire written by H. van Reuler and published by . This book was released on 1996 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: A probable cause is deterioration of soil physical properties.
Download or read book Nutrient Management Over Extended Cropping Periods in the Shifting Cultivation System of South west C te D Ivoire written by Hendrik van Reuler and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nutrient Management Over Extended Cropping Periods in the Shifting Cultivation System of South west C te D Ivoire written by Hendrik van Reuler and published by . This book was released on 1996 with total page 189 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Phosphorus and Nitrogen Nutrition of Bambara Groundnut Vigna Subterranea L Verdc in Botswana Soils written by Gaebewe Modirwa Ramolemana and published by . This book was released on 1999 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Integrated Plant Nutrient Management in Sub Saharan Africa written by and published by CABI. This book was released on 2002 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil degradation and nutrient depletion have become serious threats to agricultural productivity in Africa. Soils cannot supply the quantities of nutrients required and yield levels decline rapidly once cropping commences. This book addresses these issues and includes papers from an international symposium held at Cotonou, Benin, October 9-12, 2000, organized by the International Institute of Tropical Agriculture, Ibadan, Nigeria and the Department of Land Management of the Katholieke Universiteit Leuven, Belgium. In five main parts it marks the end of a first phase of collaborative research on "Balanced Nutrient Management Systems for the Moist Savanna and Humid Forest Zones of Africa" and concludes with recommendations, providing essential reading for crop and soil scientists.
Download or read book Crop Residue Management in Relation to Sustainable Land Use written by Moumini Savadogo and published by . This book was released on 2000 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: The potential contribution of crop residues to ruminant feeding in the four agro-ecological zones distinguished in Burkina Faso was estimated, applying the Java Program developed at the Animal Production Systems Group of Wageningen University (Chapter 2). The number of animals that can be fed and their production were estimated on the basis of availability and quality (digestibility and N content) of crop residues (cereal stovers and legume haulms).
Download or read book Integrated Nutrient Management for Sustained Crop Production in Sub Saharan Africa a Review written by K. Franzluebbers and published by . This book was released on 1998 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: 'Slash and burn agriculture'remains the major food production system in sub-Saharan Africa. However, in a major part of the region, where fallow periods have been shortened below a critical level, the system can no longer sustain crop yield due to decline in soil fertility. In order to allow continuos crop production, principles and practices that mimic natural fallow and enhance soil organic matter build-up need to be integrated into new cropping systems that replace shifting cultivation or 'slash and burn agriculture'. These include (a) returning of organic materials to the soil, (b) ensuring minimum disturbance of soil surface, and (c) use of multipurpose trees and perennials. At the time, inorganic fertilizers are also needed to maintain a positive nutriente balance of the agroecosystem. On the widespread sandy kaolinitic soils in sub-Sahara Africa, numerous published results have shows that without appropiate organic inputs, inorganic fertilizer alone cannot sustain crop yield and maintain soil fertility in the long run because of soil acideification, loss of soil organic matter and compaction. The adoption of management practices that integrate organic, chemical and biological inputs into economically and environmentally sound production systems is an essential step towards sustaining high crop yields and preventing land degradation in the region. In the humid forest region, where root crops and tree crops are ecologically more suitable, agroforestry systems, such as multistory homestead gardens, plantation/crop combinations, and alley cropping, appear to have a high potencial for maintaining soil organic matter at levels adequate for sustaining crop growth. In the subhumid and humid/subhumid transition zones, crop residue mulch, minimum tillage and leguminous cover crops are promising tecnologies for improving nutrient and water use efficiency and sustaining high yields of maize, sorghum and cowpea. In the semiarid regions, however, improvement of millet and sorghum yields is severely limited by the lack of organic inputs. The potencial for increasing and sustaining food crop production in the seminarid zone ultimately depends upon successful integration of crop, fodder and fuelwood production within a farming community.
Download or read book The Vegetation of Manyara written by Paul E. Loth and published by . This book was released on 1999 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study focuses on scale dependency, both temporal and spatial, of vegetation changes. At different spatial levels, starting from the level of the individual plant, via patch or stand, plant community, and, finally, at the level of ecosystems, the changes in the vegetation of an East African savanna in the Rift Valley are related to the time span considered. The dominant tree Acacia tortilis in Lake Manyara National Park plays an important role in plant-herbivore relationships, and was therefore taken as a typical case in this respect.
Download or read book Fire and Life in Tarangire written by Claudius Antonius Dominicus Maria van de Vijver and published by . This book was released on 1999 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: With water being the prime determinant of plant growth in these systems, reduced vegetation production after burning can be explained by the reduction of soil water content as result of vegetation litter removal, which increases loss of water through evaporation. This negative effect of fire on forage availability can have dire consequences for both domestic and wild herbivore populations when no areas are available with additional resources.
Download or read book Managing Nutrient Cycles to Sustain Soil Fertility in Sub Saharan Africa written by André Bationo and published by CIAT. This book was released on 2004 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Living with Wildlife written by Margje Marieke Voeten and published by . This book was released on 1999 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis also shows that the animals move to their wet season range because only there they can satisfy all their nutritional needs, which are high at this time of the year since the females are lactating. Their movement back to the dry season range however is related to water requirements. Furthermore, a clipping experiment was performed to investigate if the dry season range of migratory wildebeest and zebra could sustain current populations year-round when access to the wet season range would be restricted. The results indicate that clipping had a positive effect on forage quality, but that the mineral concentrations were still not sufficient to meet herbivore nutrient requirements while clipping also reduced the annual forage production to insufficient levels. The results of this study can be put to use in present land-use issues related to the integration of wildlife conservation and development of pastoral areas.
Download or read book Intensive Cropping written by Sohan S Prihar and published by CRC Press. This book was released on 2000-01-25 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explore new concepts for maximizing crop yields! Intensive Cropping: Efficient Use of Water, Nutrients, and Tillage is a compilation of current information on the interdependence of and synergies among water, nutrients, and energy in regard to increasing crop performance. This book explains the need for intensive cropping and explores the technologies and practices necessary for proper management of water, nutrients, and energy. With Intensive Cropping you will learn how to improve the quantity of the world's most important crops using methods that will minimize harm to the environment. This essential guide is a state-of-the-art account of the concepts and practices concerning the integrated use of water, nutrients, and energy in intensive cropping. Intensive Cropping combines basic and applied aspects of soil-water, nutrients, and energy management to help you optimize your crop yields and maximize the efficiency of intensively farmed regions. In Intensive Cropping, you will explore the need for extreme farming and related concerns and concepts, including: reducing runoff, deep seepage, and evaporation losses supplementing irrigation with surface and ground water understanding the process of water uptake and its effects on root dynamics and water use reducing leaching, erosion, and gasseus losses in your fields using combinations of organic manures, crop residues, chemical fertilizers, and biofertilizers for soil maintenance implementing conventional and emerging tillage systems, such as conservation tillage for improving soil quality examining case studies of contrasting edaphic requirements of rice-wheat systems Intensive Cropping brings you up-to-date on recent advances in the field, supported by relevant experimental observations on environmentally safe and effective ways to increase crop performance. By examining this new research on increasing crop production, you will be able to successfully increase crop yields in various climates and support the growing global demand for such resources.
Download or read book Cropping Systems In The Tropics Principles And Management written by Sp Palaniappan and published by New Age International. This book was released on 2006 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Land And Soil Are Non-Renewable Natural Resources. The Nature Has Taken Thousands Of Years To Create An Inch Of Fertile Soil. Mismanagement Of This Precious Resource Is A Sin Against Nature And Will Play Havoc With The Fortunes Of The Country. Many Parts Of The Country Have Already Come To The Brink Of Devastation Through Injudicious Usages, Over Exploitation Of Natural Resources Resulting In Unsustainable Productivity Of Crops.Modern Concept Of Cropping System Is Based On The Principle Of Effective Utilization Of Soil Water, Nutrients And Light For Sustainable Crop Productivity. This Book Gives The Basic Principles And Broadly Accepted Definitions Terms Frequently Used In The Literature. A Short-Review Of The Cropping Systems Work Done In The Tropics, Particularly In India Is Presented.In This Revised Edition, Contents Of All The Chapters Have Been Revised To Give Orientation Towards Management Of Sustainable Crop Production Systems. A New Chapter On Farming System Is Also Added In Tune With The Latest Trends. Information Available On Perennial Crop-Based Cropping Systems, For Example High Density Multi Species Cropping Systems Involving Coconut And Arecanut Is Updated. The Various Management Aspects Of Sustainable Cropping Systems Are Discussed And The Research Methodology That Could Be Adopted Is Elucidated. Possible Future Lines Of Work Are Given In The Final Chapter.This Book Will Prove To Be Of Immense Value Not Only To The Research Workers But Also To The Teachers And Students And Above All Farmers And Individuals Who Are Desirous Of Improving Sustainable Crop Production Systems.
Download or read book Resource Management by West African Farmers and the Economics of Shifting Cultivation written by and published by IITA. This book was released on with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Changes in Shifting Cultivation in Africa written by and published by Bernan Press(PA). This book was released on 1984 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Farming Systems in the Tropics written by Hans Ruthenberg and published by . This book was released on 1976 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some general charscteristics of farming in a tropical environment; Shifting cultivation systems; Fallow systems; Ley systems; Systems with permanent upland cultivation; Systems with arable irrigation farming; Systems with perennial crops; Grazing systems; General tendences in the development of tropical farm systems.
Download or read book Agroforestry Abstracts written by and published by . This book was released on 1990 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt:
