Related items
Showing items related by metadata.
-
DocumentRehabilitation of degraded sites 2001This issue of Unasylva focuses on the techniques, but also the policy and social aspects, of rehabilitating particular degraded sites through forestry.
-
DocumentManagement of tropical sandy soils for sustainable agriculture
A holistic approach for sustainable development of problem soils in the tropics
2007Also available in:
No results found.Light textured sandy soils are ubiquitous throughout the tropics and constitute an important soil resource on which millions are dependent for their livelihoods. Spanning a range of rainfall regimes from the arid to the humid tropics, they present unique sustainability and environmental challenges to resource managers. Physical, chemical and biological characteristics of sandy soils often act as a severe limitation in crop production. Within the tropics, these soils are predominantly occupied by resource poor and often marginalized communities that have limited capacity to address the aforementioned biophysical challenges. By manipulating the constituent components of the soil through the addition and conservation of organic matter or through the physical application of organic waste and clay materials, the potential productivity of these soils can be realized. There are thus significant opportunities in developing innovative management strategies that enhance the productivity of these systems under the diverse range of climatic conditions in which these soils occur. This symposium brought together scientists, extension practitioners and policy-makers to exchange knowledge and experiences on land and water degradation of tropical sandy soils and their sustained management and remediation. This proceedings documents the 92 session papers presented at the symposium (58 oral and 34 poster papers). -
Book (stand-alone)Soil and plant testing and analysis as a basis of fertilizer recommendations
FAO Soils Bulletin 38/2
1980Also available in:
No results found.General principles of plant nutrition don't furnish the concrete information, necessary for practical treatments in a given situation. Thus, the questions arise which parameters must be considered an how can they be determined. This leads to consider the concepts of nutrients diagnosis, as well as the methodology and the corresponding equipment and instrumentation, for putting it into practice. The question may arise whether plant or soil analysis should be used for diagnosis crop nutrient requ irements and making fertilizer recommendations.Both methods may be complementary, not competitive and the laboratories should be in the possibility to carry out both types analysis. It is recommendable to start soil analysis prior to plant testing.There are many possibilities and methods for testing soil chemical and nutrient properties. It is indeed highly recommended to agree on a minimum of uniformity of methodology.
Users also downloaded
Showing related downloaded files
No results found.