CIFOR-ICRAF s’attaque aux défis et aux opportunités locales tout en apportant des solutions aux problèmes mondiaux concernant les forêts, les paysages, les populations et la planète.

Nous fournissons des preuves et des solutions concrètes pour transformer l’utilisation des terres et la production alimentaire : conserver et restaurer les écosystèmes, répondre aux crises mondiales du climat, de la malnutrition, de la biodiversité et de la désertification. En bref, nous améliorons la vie des populations.

CIFOR-ICRAF publie chaque année plus de 750 publications sur l’agroforesterie, les forêts et le changement climatique, la restauration des paysages, les droits, la politique forestière et bien d’autres sujets encore, et ce dans plusieurs langues. .

CIFOR-ICRAF s’attaque aux défis et aux opportunités locales tout en apportant des solutions aux problèmes mondiaux concernant les forêts, les paysages, les populations et la planète.

Nous fournissons des preuves et des solutions concrètes pour transformer l’utilisation des terres et la production alimentaire : conserver et restaurer les écosystèmes, répondre aux crises mondiales du climat, de la malnutrition, de la biodiversité et de la désertification. En bref, nous améliorons la vie des populations.

CIFOR–ICRAF publishes over 750 publications every year on agroforestry, forests and climate change, landscape restoration, rights, forest policy and much more – in multiple languages.

CIFOR–ICRAF addresses local challenges and opportunities while providing solutions to global problems for forests, landscapes, people and the planet.

We deliver actionable evidence and solutions to transform how land is used and how food is produced: conserving and restoring ecosystems, responding to the global climate, malnutrition, biodiversity and desertification crises. In short, improving people’s lives.

Soil fertility improvement and maize yields following woodlots of three different tree species in Shinyanga, Tanzania

Exporter la citation

Soil fertility decline and fuelwood scarcity are among the major constraints affecting livelihoods of resource poor farmers in Tanzania. An agroforestry option that can address these twin problems is rotational woodlot technology, which involves rotating arable crops with planted tree-fallows. A study was conducted in Shinyanga region, Tanzania to evaluate woodlots of three tree species (Leucarna leucocephala, Acacia polyacantha and Acacia nilotica) for their effects on soil fertility improvement and subsequent maize yields compared with natural grass fallow (control). The trees were intercropped with maize during the first three years of their growth and then left as tree-fallows for another three years. Following six years of growth, strong differences were noted among tree species in terms of pre-season nitrogen accumulated and maize yields.
    Année de publication

    2004

    Auteurs

    Banzi F M; Otsyina R M; Asenga D

    Langue

    English

    Mots clés

    fallow, fuelwood, maize, rotational cropping, soil fertility

    Géographique

    Tanzania

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