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Showing items 1 through 9 of 894.
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Library Resource
Forestry plantations should be regarded as an alternative sustainable land-use system in degraded savannah areas. They contribute to the maintenance of productive processes in degraded soils that are of economic importance for local inhabitants; in addition, in the ecological sense, timber and non-timber products from planted forests reduce the exploitation pressure on native forests. Eucalyptus plantations on degraded savannahs in the northern Brazilian Amazon may help to reduce exploitation pressure on native forests.
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This study, which looked at 72 in traditional Salers system, shows there is a correlation between the use made of fields and the characteristics of these fields. The geographical characteristics and the use made of over 1,500 fields (cut and/or grazed fields) were described, mainly based on the statements made by farmers. Three groups of fields were identified (only cut fields, cut and grazed fields, only grazed fields) and in a second step, 15 types of fields uses were identified and described.
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Documents de politique et mémoires
Nowadays , demographic pressure on water and land resources is progressively increasing and their sustainability features have increasingly been under threat so these resources are required to using effectively. Large part of food requirements meet from irrigable area.
Günümüzde arazi ve su kaynaklarına olan demografik baskının artması ve su kaynaklarının sürdürebilir olma niteliklerinin gün geçtikçe tehlikeye girmesi, su kaynakların etkin kullanımı ihtiyacını arttırmaktadır. Gıda ihtiyacının büyük bir kısmı sulanabilir alanlardan sağlanmaktadır.
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Documents de politique et mémoires
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Library Resource
Documents de politique et mémoires
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Library Resource
Documents et rapports de conférence
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Documents de politique et mémoires
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Library Resource
Land degradation has become a growing concern with the current increase in demand for arable land. Sustainable land management and land restoration practices are required in order to meet the demands to provide food and other services. Adoption of improved practices has, however, not been widespread partly because of a lack of clarity on the true economic value and setting of proper financial incentives. This review focuses on the economic costs of land degradation as a prelude to two ongoing initiatives involving the United Nations Convention to Combat Desertification (UNCCD).
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Library Resource
Documents de politique et mémoires
Among the species, that are collectively called rocket, only three species of genus Diplotaxis (D. tenuifolia, D. muralis and D. viminea), can be found growing wild in Slovenia while species from the genus Eruca are not occurring. The Gene Bank of Agricultural Plants at the Agricultural Institute of Slovenia holds 19 autochthonous accessions from different parts of Slovenia. The main morphologic
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Library Resource
Documents de politique et mémoires
Cabbage production in Slovenia has a long tradition. Domestic varieties are bred from autochthonous population from different parts of Slovenia. The characteristics of domestic varieties (e.g. for sauering) are important for Slovenian consumers. On the other hand hybrid cultivars are uniform, give much higher yields and they are resistant to different diseases. So far, cabbage breeding at the Agri
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