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Pot and field experiments were conducted in the greenhouse and at three field sites (Marondera, Domboshawa and Makoholi) in Zimbabwe to examine the effects of soils and fertilizers on nutrient uptake and growth of 6 exotic tree species (Eucalyptus camaldulensis, E. grandis, E. tereticornis, Leuca...


Sanginga, N.Gwaze, D.Swift, M.J.[Nutrient requirements of exotic tree species in Zimbabwe]Nutrient requirements of exotic tree species in Zimbabwe

Farmer-managed trials in developing countries often show great variability in yield and treatment effects. The use of statistical techniques is demonstrated to explain this variability in a maize + cassava intercropping trial in southwestern Nigeria. Concomitant variables, measured in the trial f...


Mutsaers, H.J.W.Walker, P.[Farmers maize yields in S.W. Nigeria and the effect of variety and fertilizer: an analysis of variability in onfarm trials]Farmers maize yields in S.W. Nigeria and the effect of variety and fertilizer: an analysis of variability in onfarm trials

A trial was conducted to study the long-term effects of alley cropping on maize under continuous cropping with and without fertilizer. Maize was planted twice a year for four years. Maize yields were higher with alley cropping than without alley cropping from the fourth crop onward. Fertilizer ap...


Shannon, D.A.Vogel, W.O.Kabaluapa, K.N.[The effects of alley cropping and fertilizer application on continuously cropped maize]The effects of alley cropping and fertilizer application on continuously cropped maize
Edje, O.T.Maimu, J.M.Mbuya, O.S.Ndakidemi, P.Mushi, C.S.Allen, David J.[Progress in on-farm research with beans in Lushoto district, Tanga Region, Tanzania]Progress in on-farm research with beans in Lushoto district, Tanga Region, Tanzania

Livestock systems in the tropics can contribute to mitigate climate change by reducing greenhouse gas (GHG) emissions and increasing carbon accumulation. We quantified C stocks and GHG emissions of 30 dual-purpose cattle farms in Nicaragua using farm inventories and lifecycle analysis. Trees in s...


Gaitán, LucíaLäderach, PeterGraefe, SophieRao, Idupulapati M.Hoek, Rein van der[Climate-smart livestock systems: an assessment of carbon stocks and GHG emissions in Nicaragua]Climate-smart livestock systems: an assessment of carbon stocks and GHG emissions in Nicaragua

In the last 40 years, large areas of the Mau forest, the largest contiguous tropical montane forest in East Africa, have been cleared for agriculture. To date, there are no empirical data on how this land use change affects carbon dioxide (CO2) fluxes from soil respiration and soil methane (CH4) ...


Wanyama, IbrahimPelster, David E.Butterbach-Bahl, KlausVerchot, Louis V.Martius, C.Rufino, Mariana C.[Soil carbon dioxide and methane fluxes from forests and other land use types in an African tropical montane region]Soil carbon dioxide and methane fluxes from forests and other land use types in an African tropical montane region

Phosphorus (P) is a critical, geographically concentrated, nonrenewable resource necessary to support global food production. In excess (e.g., due to runoff or wastewater discharges), P is also a primary cause of eutrophication. To reconcile the simultaneous shortage and overabundance of P, lost ...


Mayer, B.K.Baker, L.A.Boyer, T.H.Drechsel, PayGifford, M.Hanjra, Munir A.[Total value of phosphorus recovery]Total value of phosphorus recovery

There is a proactive interest in recovering water, nutrients and energy from waste streams with the increase in municipal wastewater volumes and innovations in resource recovery. Based on the synthesis of wastewater data, this study provides insights into the global and regional “potential” of wa...


Qadir, ManzoorDrechsel, PayCisneros, B.J.Kim, Y.Pramanik, A.Mehta, P.Olaniyan, O.[Global and regional potential of wastewater as a water, nutrient and energy source]Global and regional potential of wastewater as a water, nutrient and energy source

Zambia has three primary agro-ecological regions, with each region having specific ecological characteristics. Region II agro-ecological zone of Zambia has low nutrient reserves and poor water holding capacity due to moderately leached clayey to loamy soil; this has led to low soybean productivit...


Alamu, E.O.Gondwe, T.Akinwale, G.Suzuki, K.Chisonga, C.Chigeza, G.Maziya-Dixon, B.B.[Impact of soil fertility management practices on the nutritional quality of Soybean (Glycine max (l.) Merr.) varieties grown in Eastern Zambia]Impact of soil fertility management practices on the nutritional quality of Soybean (Glycine max (l.) Merr.) varieties grown in Eastern Zambia

Sub-Saharan Africa (SSA) is plagued by low productivity and little research is available on the attainable responses and profitability to applied nutrients under variable environments. The objective of this study was to determine the attainable maize grain response to and potential of profitabili...


Kihara, JobHuising, JeroenNziguheba, GeneroseWaswa, Boaz S.Njoroge, SKabambe, V.Iwuafor, E.Kibunja, C.N.Esilaba, Anthony O.Coulibaly, A[Maize response to macronutrients and potential for profitability in sub-Saharan Africa]Maize response to macronutrients and potential for profitability in sub-Saharan Africa

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