Soil properties and plant production after short-term fallows in Senegal

Autor: Raphaël J. Manlay, J. L. Chotte, M. Diatta, Dominique Masse, Roger Pontanier
Přispěvatelé: Université Joseph Ki-Zerbo [Ouagadougou] (UJZK), Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF), Institut Sénégalais de Recherches Agricoles [Dakar] (ISRA), Institut de recherche pour le développement (IRD [Sénégal])
Rok vydání: 2006
Předmět:
0106 biological sciences
sol
010504 meteorology & atmospheric sciences
Perennial plant
perennial grasses
rendement
01 natural sciences
Soil management
parcelle
Fallow
Multipurpose tree
azote
agroforesterie
2. Zero hunger
chemistry.chemical_classification
potassium
food and beverages
04 agricultural and veterinary sciences
Pollution
[SDE]Environmental Sciences
soil nutrients
Carbone
mil
Soil Science
légumineuse
jachère améliorée
Sénégal
zone soudano-sahélienne
West Africa
Organic matter
plant biomass
0105 earth and related environmental sciences
calcium
Soil organic matter
climat tropical sec
Soil carbon
15. Life on land
Soil quality
phosphore
soil organic carbon
Agronomy
chemistry
sands
040103 agronomy & agriculture
0401 agriculture
forestry
and fisheries
Environmental science
Soil fertility
Agronomy and Crop Science
tree legumes
010606 plant biology & botany
Zdroj: Soil Use and Management
Soil Use and Management, Wiley, 2004, 20 (1), pp.92-95. ⟨10.1079/SUM2003226⟩
ISSN: 0266-0032
1475-2743
Popis: International audience; trials of vegetation modification were carried out to test the hypothesis that the management of key plant groups such as trees, perennial grasses and legumes would improve soil chemical properties in short-term fallows. Soil properties and plant production during a 4-year fallow period and millet yields after clearing were recorded at two sites representing dry and subhumid climates in Senegal, West Africa. During the four years of fallow, soil organic matter did not vary significantly at either site. A decrease in amounts of Olsen P, calcium and potassium in soil (0-10 cm depth) by 42-50% occurred at one site due to an effect of perennial grasses. The highest millet yields were measured in plots on which the largest amounts of biomass had been burnt after clear-cutting. These results confirmed that short-term fallows do not replenish soil organic matter and nutrient contents. The introduction of planted species did not arrest the decline in soil quality.
Databáze: OpenAIRE
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