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Boswellia papyrifera (Del.) Hochst, a flagship tree species in the drylands of Ethiopia, is of high ecological, economic and social value. Recent work has shown that a wood-boring beetle is threatening its survival. In situ and ex situ studies were carried out to study the biology and damage asso...


Negussie, A.Gebrehiwot, K.Yohannes, M.Aynekulu, ErmiasManjur, B.Norgrove, L.[An exploratory survey of long horn beetle damage on the dryland flagship tree species Boswellia papyrifera (Del.) Hochst]An exploratory survey of long horn beetle damage on the dryland flagship tree species Boswellia papyrifera (Del.) Hochst

Little research on slash and burn systems has investigated whether effects of burning are due to the fire per se or to the removal of biomass from the soil surface. In this experiment, the aim was to assess the effects of burning versus no burning and mulching versus no mulching on maize yields, ...


Norgrove, L.Nkem, J.N.Hauser, S.[Seperating the agronomic effects of burning and biomass removal in a typical slash and burn rotation system in Southern Cameroon]Seperating the agronomic effects of burning and biomass removal in a typical slash and burn rotation system in Southern Cameroon

We aimed to quantify the relative impact of slashing, mulching, burning and cropping on surface casting by earthworms and whether effects were due to treatments per-se or to the changes in soil temperature and water content they may induce. Surface cast production was monitored during two maize c...


Norgrove, L.Nkem, J.N.Hauser, S.[Effects of residue management on earthworm cast production after Chromolaena odorata short fallow in the humid tropics]Effects of residue management on earthworm cast production after Chromolaena odorata short fallow in the humid tropics

Black leaf streak disease (BLSD) affects both bananas and plantains. Anecdotal evidence suggests that when plantain is grown under shade in agroforestry systems, there is less damage from BLSD. In this study, BLSD severity and agronomic fruit characteristics of plantain were compared under high a...


Norgrove, L.Hauser, S.[Black leaf streak disease and plantain fruit characteristics as affected by tree density and biomass management in a tropical agroforestry system]Black leaf streak disease and plantain fruit characteristics as affected by tree density and biomass management in a tropical agroforestry system

Across Africa the production of high value horticultural crops is being recognized as a possible route out of rural poverty. To determine at which level of intensification tomato yields were maximized and which tomato cultivar responds best to intensification, an on-farm, factorial trial was cond...


Tueche, J.Norgrove, L.Hauser, S.Cadisch, Georg[Tillage and varietal impacts on tomato (Solanum lycopersicum L.) production on an ultisol in central Cameroon]Tillage and varietal impacts on tomato (Solanum lycopersicum L.) production on an ultisol in central Cameroon

In low-input land-use systems combining timber trees with shade-tolerant understorey crops, it is essential to establish the effects of tree density upon weeds and the contribution of weeds to competition and nutrient cycling. Adjusting tree density may alter weed competition for light, water and...


Norgrove, L.Hauser, S.Weise, S.F.[Response of Chromolaena odorata to different tree densities in a tropical agrisilvicultural system. Aboveground biomass production, partitioning, decomposition and nutrient release]Response of Chromolaena odorata to different tree densities in a tropical agrisilvicultural system. Aboveground biomass production, partitioning, decomposition and nutrient release

Tree litter fall was monitored for 2 years in two Terminalia ivorensis A. Chev. plantations in the humid tropics of southern Cameroon. The plantations were 6 and 17 years old when they were each thinned to two timber stand densities (TSD) and understorey food crops were introduced. Leaf litter wa...


Norgrove, L.Hauser, S.[Leaf properties, litterfall and nutrient inputs of Terminalia ivorensis at different tree stand densities in a tropical timberfood crop multistrata system]Leaf properties, litterfall and nutrient inputs of Terminalia ivorensis at different tree stand densities in a tropical timberfood crop multistrata system

Cacao is an important smallholder crop in West Africa, often grown under a forest canopy. Yields from cacao farms are low so farmers consider removing shade trees, however, the impacts on pest and disease dynamics, soil fertility and thus yield in the longer term are not understood. We estimated ...


Norgrove, L.Hauser, S.[Carbon stocks in shaded Theobroma cacao farms and adjacent secondary forests of similar age in Cameroon]Carbon stocks in shaded Theobroma cacao farms and adjacent secondary forests of similar age in Cameroon

Data on earthworm surface cast deposition in undisturbed, cropped and recovering sites from West and Central Africa were compiled to assess the effects of land use system (LUS) change and if casting can be used to indicate soil quality. Annual cast deposition in undisturbed systems was significan...


Hauser, S.Norgrove, L.Asawalam, D.Schulz, S.[Effect of land use change, cropping systems and soil type on earthworm cast production in West and Central Africa]Effect of land use change, cropping systems and soil type on earthworm cast production in West and Central Africa

Soil moisture depletion during dry seasons by planted hedgerows to lower levels than under natural fallow, would reduce drainage and nutrient losses in the following rainy season when food crops are grown. The volumetric water content of the 0–150 cm soil profile was measured under planted hedger...


Hauser, S.Norgrove, L.Duguma, B.Asaah, E.[Soil water regime under rotational fallow and alternating hedgerows on an Ultisol in southern Cameroon]Soil water regime under rotational fallow and alternating hedgerows on an Ultisol in southern Cameroon

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