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Doltra, JordiOlesen, J.E.Báezc, DoloresLouroc, AránzazuChirinda, Ngonidzashe[Modeling nitrous oxide emissions from organic and conventional cereal-based cropping systems under different management, soil and climate factors]Modeling nitrous oxide emissions from organic and conventional cereal-based cropping systems under different management, soil and climate factors

Conservation agriculture (CA), comprising minimum soil disturbance, retention of crop residues and crop diversification, is widely promoted for reducing soil degradation and improving agricultural sustainability. It is also claimed to mitigate climate change through soil carbon sequestration: we ...


Powlson, David S.Stirling, Clare M.Thierfelder, ChristianWhite, Rodger P.Jat, Mangi Lal[Does conservation agriculture deliver climate change mitigation through soil carbon sequestration in tropical agro-ecosystems?]Does conservation agriculture deliver climate change mitigation through soil carbon sequestration in tropical agro-ecosystems?

One of the options to alleviate soil fertility constraints for sustainable agriculture in the savannas of West Africa is to develop soil nutrient management technologies from an adequate supply and feasible share of organic and mineral inputs. This paper makes a diagnosis of farm-level use of org...


Manyong, Victor M.Makinde, K.Sanginga, N.Vanlauwe, BernardDiels, J.[Fertilizer use and definition of farmer domains for impactoriented research in the northern Guinea savanna of Nigeria]Fertilizer use and definition of farmer domains for impactoriented research in the northern Guinea savanna of Nigeria

An enormous effort is underway in Ethiopia to address soil erosion and restore overall land productivity. Modelling and participatory approaches can be used to delineate erosion hotspots, plan site- and context-specific interventions and assess their impacts. In this study, we employed a modellin...


Tamene, LulsegedAdimassu, ZenebeEllison, JamesYaekob, TesfayeWoldearegay, KifleMekonnen, KinduThorne, Peter J.Le, Quang Bao[Mapping soil erosion hotspots and assessing the potential impacts of land management practices in the highlands of Ethiopia]Mapping soil erosion hotspots and assessing the potential impacts of land management practices in the highlands of Ethiopia

Conversion of natural forest to other land uses could lead to significant changes in catchment hydrology, but the nature of these changes has been insufficiently investigated in tropical montane catchments, especially in Africa. To address this knowledge gap, we identified stream water sources an...


Jacobs, S.R.Timbe, E.Weeser, B.Rufino, Mariana C.Butterbach-Bahl, KlausBreuer, L.[Land use alters dominant water sources and flow paths in tropical montane catchments in East Africa]Land use alters dominant water sources and flow paths in tropical montane catchments in East Africa
Mndela, M.Madakadze, I.C.Nherera-Chokuda, F.Dube, Sikhalazo[Dynamics of the soil seed bank over the short-term after bush clearing in a semi-arid shrubland in Springbokvlakte thornveld of South Africa]Dynamics of the soil seed bank over the short-term after bush clearing in a semi-arid shrubland in Springbokvlakte thornveld of South Africa

Agriculture has been recognized as a major anthropogenic source of surplus loads of nitrogen in the environment. Losses of nitrate via subsurface pathways are severely threatening groundwater and surface waters. This study explored the capability of a coupled hydro-biogeochemical spatially explic...


Klatt, SteffenKraus, DavidKraft, P.Breuer, L.Wlotzka, M.Heuveline, V.Haas, E.Kiese, RalfButterbach-Bahl, Klaus[Exploring impacts of vegetated buffer strips on nitrogen cycling using a spatially explicit hydro-biogeochemical modeling approach]Exploring impacts of vegetated buffer strips on nitrogen cycling using a spatially explicit hydro-biogeochemical modeling approach

We test the applicability of two different methods for quantifying carbon (C) stocks in five tropical peat sites in Sumatra, Indonesia; two in an intact peat swamp forest, one in a logged forest and two in an oil palm plantation. Elemental analysis is used to quantify C contents and stocks in all...


Farmer JMatthews RSmith, PeteLangan CHergoualc’h, KristellVerchot, Louis V.Smith, J.U.[Comparison of methods for quantifying soil carbon in tropical peats]Comparison of methods for quantifying soil carbon in tropical peats

Adsorption of paraquat (1:1′-dimethyl 4:4′-bipyridylium chloride) by six common soil types from southern Nigeria was studied. Adsorption data conformed with linear Langmuir isotherm. Adsorption maximum (b) calculated from the Langmuir equation ranged from 1,200 to 7,500 µg/g of soil. The iron oxi...


Juo, A.S.R.Oginni, O.O.[Adsorption and desorption of paraquat in acid tropical soils]Adsorption and desorption of paraquat in acid tropical soils

The Yaqui Valley, one of Mexico’s major breadbaskets, includes ∼230,000 ha of cultivated, irrigated cropland, with two thirds of the area planted annually to spring wheat (Triticum turgidum). Nitrogen (N) fertilizer applications to wheat have doubled since the 1980s, and currently average around ...


Millar, NevilleUrreac, AbisaíKahmark, KevinShcherbak, IuriiRobertson, G. PhilipOrtiz Monasterio, Ivan[Nitrous oxide (N2O) flux responds exponentially to nitrogen fertilizer in irrigated wheat in the Yaqui Valley, Mexico]Nitrous oxide (N2O) flux responds exponentially to nitrogen fertilizer in irrigated wheat in the Yaqui Valley, Mexico

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