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.

Early performance of thirteen provenances of four Australian Acacia species at Tabora, Tanzania

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Deforestration, decline of soil fertility and low crop yields, and shortage of fuel wood are threating the livelihoods of rural communities in the country. Farmers are responding to this situation in parts of Tabora region of Africa by planting woodlots using fast-growing Australian Acacia spp. However, a limited number of species has so far been tested, so there is a need to provide farmers with a wider array of species to increase diversity on-farms. In this study, thirteen provences of four Australian Acacia species(four of Acacia crassicarpa, four of A. julifera, three of A. leptocarpa and two of A. auriculiformis) obtained from CSIRO (Australia) were tested from October 1998 for their performance at Tabora. Provances differed significantly in terms of tree survival at the age of 3 years except for the first six months. The seven provances A. crassicarpa (19739), A. auriculiformis (19621), A. crassicarpa (13682), A. leptocarpa (19006), A. julifera var. julifera (14890), A. leptocarpa (16176) and A. leptocarpa (16179) had survuval of above 70%. Provenances did not differ significantly in terms of tree mean height and diameter at breast height. The mean height of all provenances was 4.7m and mean tree diameter was 4.3cm. however, provenances differed significantly in terms of wood volume and total biomass production, which ranged from 2.0 to 10.1m cubic ha~1 and 7.3 to 24.3t ha~1 respectively.

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