Search Results - "complexity"

On-farm demonstration, testing and dissemination of boiling water treatment for plantain (Musa spp.) sucker sanitation in Southern Cameroon by Hauser, A., Amougou, D., Bengono, B., Ngo Kanga, F., Pekeleke, M.

“…It is highly susceptible to a complex of root and corm pests and diseases and yields are low. …”
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Application of Eight-step Methodology for Reviving Springs and Improving Springshed Management in the Mid-hills of Nepal. by Shrestha, R., Desai, J., Mukherji, A., Dhakal, M., Kulkarni, H., Acharya, S.

“…Springs are also part of complex sociotechnical and informal governance systems with pronounced gender and equity dimensions, and these systems are not well understood. …”
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PCR markerbased analysis of wild and cultivated yams (Dioscorea spp.)in Nigeria: genetic relationships and implication for ex situ conservation by Mignouna, H., Abang, Mathew M., Wanyera, N., Chikaleke, V., Asiedu, Robert, Thottappilly, G.

“…Cultivated yams belonging to the D. cayenensis–rotundata species complex, which were classified into seven morphotypes/varietal groups, could be clearly separated into two major groups corresponding to D. rotundata Poir. and D. cayenensis Lam. …”
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Plantain (Musa spp. AAB) bunch yield and root health response to combinations of physical, thermal and chemical sucker sanitation measures by Hauser, S.

“…The crop is largely grown in extensive 'slash and burn' systems, drawing heavily on the natural resource base, but is low-yielding due to its high susceptibility to a complex of root and corm pests and diseases. Farmers are unaware of nematodes, fungi and banana weevil eggs, and therefore practise virtually no pest or disease control. …”
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Farmers’ use and adaptation of improved climbing bean production practices in the highlands of Uganda by Ronner, E., Descheemaeker, Katrien K., Almekinders, Conny J.M., Ebanyat, Peter, Giller, Kenneth E.

“…Climbing beans offer potential for sustainable intensification of agriculture, but their cultivation constitutes a relatively complex technology consisting of multiple components or practices. …”
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Diversity of plants in cocoa agroforests in the humid forest zone of Southern Cameroon by Sonwa, D.J., Nkongmeneck, B.A., Weise, Stephan F., Tchatat, M., Adesina, A.A., Janssens, M.J.J.

“…In the humid forest zone of Southern Cameroon, farmers generally associate cocoa with native and exotic trees in complex agroforestry systems. Despite the socio-economic and ecological importance of these systems, few studies have investigated their plant composition. …”
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Using high-resolution data to assess land use impact on nitrate dynamics in East African Tropical Montane Catchments by Jacobs, S.R., Weeser, B., Guzha, A.C., Rufino, Mariana C., Butterbach-Bahl, Klaus, Windhorst, D., Breuer, Lutz

“…We collected a unique 2 year high‐resolution data set to assess the effects of land use (i.e., natural forest, smallholder agriculture and commercial tea plantations) on NO3‐N dynamics in three subcatchments within a headwater catchment in the Mau Forest Complex, Kenya's largest tropical montane forest. …”
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Land use alters dominant water sources and flow paths in tropical montane catchments in East Africa by Jacobs, S.R., Timbe, E., Weeser, B., Rufino, Mariana C., Butterbach-Bahl, Klaus, Breuer, Lutz

“…To address this knowledge gap, we identified stream water sources and flow paths in three tropical montane sub-catchments (27–36 km2) with different land use (natural forest, smallholder agriculture and commercial tea plantations) within a 1 021 km2 catchment in the Mau Forest Complex, Kenya. Weekly samples were collected from stream water, precipitation and soil water for 75 weeks and analysed for stable water isotopes (δ2H and δ18O) for mean transit time estimation, whereas trace element samples from stream water and potential end members were collected over a period of 55 weeks for end member mixing analysis. …”
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Attraction of the predatory mites Typhlodromalus manihot and Typhlodromalus aripo to cassava plants infested by cassava green mite by Gnanvossou, D., Hanna, R., Dicke, M., Yaninek, S.

“…The attraction of the predatory mites, Typhlodromalus manihoti and Typhlodromalus aripo, to the host plant-spider mite complex, Manihot esculenta–Mononychellus tanajoa, was investigated with a Y-tube olfactometer. …”
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Breeding drought tolerant cowpea: constraints, accomplishments, and future prospects by Agbicodo, E.M., Fatokun, C.A., Muranaka, S., Visser, Richard G.F., Linden, C.G. van der

“…Some other reasons might be related to the complex nature of the drought stress response, and partly to the difficulties associated with reliable and reproducible measurements of a single trait linked to specific molecular markers to be used for marker assisted breeding. …”
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QTL Analysis of Fusarium Root Rot Resistance in an Andean X Middle American Common Bean RIL Population by Wang, Weijia, Jacobs, Janette L., Chilvers, Martin I., Mukankusi, Clare Mugisha, Kelly, James D., Cichy, Karen Ann

“…Its causal pathogens include clade 2 members of the Fusarium solani (Mart.) Sacc. species complex. Here, we characterize common bean reaction to different Fusarium species and identify genomic regions associated with resistance. …”
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Solutions for Thriving Ecosystems: 2017-2018 Research Highlights. by CGIAR Research Program on Water, Land and Ecosystems

“…We also need to build capacity to navigate complex uncertainties. Now is time for transformational change. …”
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Climate analogs for agricultural impact projection and adaptation: a reliability test by Bos, S.P.M., Pagella, Tim, Kindt, Roeland, Russell, A., Luedeling, Eike

“…The climate analog approach is often considered a valuable tool for climate change impact projection and adaptation planning, especially for complex systems that cannot be modeled reliably. Important examples are smallholder farming systems using agroforestry or other mixed-cropping approaches. …”
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Through the Eyes of Children: Perceptions of Environmental Change in Tropical Forests by Pellier, A.S, Wells, J.A., Abram, N.K., Gaveau, D.L.A., Meijaard, E.

“…Our study illuminates part of the complex interplay between perceptions of land cover and land use change. …”
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Perceptions across scales of governance and the Indonesian peatland fires by Carmenta, R., Zabala, A., Daeli, W., Phelps, J.

“…Across leading environmental challenges—fire management, climate change, deforestation – there is growing awareness of the need to better account for diverse stakeholder perceptions across complex, multi-level governance arrangements. Perceptions often condition behavior, compliance and engagement in ways that impact environmental outcomes. …”
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Digital platforms for smallholder credit access: the mediation of trust for cooperation in maize value chain financing by Agyekumhene, Christopher, Vries, J.R. de, Paassen, A. van, Macnaghten, P., Schut, Marc, Bregt, A.

“…Using a value chain approach, this diagnostic study explains how a complex configuration of actor interaction within an institutionally and agro-ecologically challenged value chain leads to the enduring absence of maize farming credit support. …”
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An impact assessment of IITAs benchmark area approach by Douthwaite, Boru, Baker, D., Weise, Stephan F., Gockowski, J., Manyong, Victor M., Keatinge, J.D.H.

“…We first established that existing “best practice” in developing sustainable improvements to complex agricultural systems is represented by integrated natural resource management (INRM) and current thinking in farming systems research (FSR). …”
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Review: Role of herbivores in sustainable agriculture in sub-Saharan Africa by Ayantunde, Augustine A., Duncan, Alan J., Wijk, Mark T. van, Thorne, Peter J.

“…The role of herbivorous livestock in supporting the sustainability of the farming systems in which they are found is complex and sometimes conflicting. In Sub-Saharan Africa (SSA), the integration of livestock into farming systems is important for sustainable agriculture as the recycling of nutrients for crop production through returns of animal manure is a central element of the dominant mixed crop-livestock systems. …”
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Multidecadal, county-level analysis of the effects of land use, Bt cotton, and weather on cotton pests in China by Zhang, Wei, Lu, Yanhui, Werf, Wopke van der, Huang, Jikun, Wu, Feng, Zhou, Ke, Deng, Xiangzheng, Jiang, Yuying, Wu, Kongming, Rosegrant, Mark W.

“…Bt cotton had pervasive effects on the whole pest complex in cotton and its management. Adoption resulted in major reductions in insecticide use for bollworm control. …”
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Salicylic acid perturbs sRNA-Gibberellin regulatory network in immune response of potato to potato virus Y infection by Kriznik, M., Petek, M., Dobnik, D., Ramsak, Z., Baebler, S., Pollmann, S., Kreuze, Jan F., Zel, J., Gruden, K

“…We aimed at unraveling the roles of small RNAs (sRNAs) in the complex immune signaling network controlling the establishment of tolerant response of potato cv. …”
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