Now showing items 821-840 of 8125

    • Genotype by environment interaction and grain yield stability of drought tolerant cowpea landraces in Ethiopia 

      Mekonnen, T.W.; Mekbib, F.; Amsalu, B.; Gedil, M.; Labuschagne, M. (2022)
      Cowpea is one of the most important indigenous food and forage legumes in Africa. It serves as a primary source of protein for poor farmers in drought-prone areas of Ethiopia. The crop is used as a source of food, and insurance crop during the dry season. Cowpea is adaptable to a wide range of climatic conditions. Despite this, the yield of the crop is generally low due to lack of stable and drought-tolerant varieties. In this study, 25 cowpea genotypes were evaluated in five environments using a ...
    • Understanding gendered trait preferences: implications for client-responsive breeding programs 

      McDougall, C.; Kariuki, J.; Lenjiso, B.M.; Marimo, P.; Mehar, M.; Murphy, S.; Teeken, B.; Akeste, M.J.; Benzie, J.; Galie, A.; Kulakow, P.; Mekkawy, W.; Nkengla-Asi, L.; Ojango, J.M.K.; Tumuhimbise, R.; Uwimana, B.; Orr, A. (2022)
      Client-responsiveness is a foundation for effectiveness of public sector breeding programs in agriculture, aquaculture and livestock. However, there remains a considerable lack of clarity about what this means, specifically in terms of how programs can be gender-responsive. This study contributes to addressing that need. It does so through sharing higher-level insights emerging from the combined experiences of eight gendered trait preference cases from across nine countries in Asia and Africa. The ...
    • Long-term evidence for ecological intensification as a pathway to sustainable agriculture 

      MacLaren, C.; Mead, A.; van Balen, D.; Claessens, L.; Etana, A.; de Haan, J.; Haagsma, W.; Jack, O.; Keller, T.; Labuschagne, J.; Myrbeck, A.; Necpalova, M.; Nziguheba, G.; Six, J.; Strauss, J.; Swanepoel, P.A.; Thierfelder, C.; Topp, C.; Tshuma, F.; Verstegen, H.; Walker, R.; Watson, C.; Wesselink, M.; Storkey, J. (2022-09)
      Ecological intensification (EI) could help return agriculture into a ‘safe operating space’ for humanity. Using a novel application of meta-analysis to data from 30 long-term experiments from Europe and Africa (comprising 25,565 yield records), we investigated how field-scale EI practices interact with each other, and with N fertilizer and tillage, in their effects on long-term crop yields. Here we confirmed that EI practices (specifically, increasing crop diversity and adding fertility crops and ...
    • Cassava farmers' insights and seed dealers enterprises in Nigeria 

      Balogun, D.O. (University of Ibadan, 2019)
      Seed enterprise is an initiative and risk set up in the production of cassava stems from existing local seed varieties or improved seed varieties for economically sustainable profit. Although, most cassava seeds produced are through informal seed system among smallholder farmers but there is need for replacement strategy for cassava seeds mostly planted over years. Based on this, there is need for intense exploration in the linkage between cassava seed management and diffusion scheme among rural ...
    • Genetic diversity and nitrogen fixation in underutilized tropical legumes 

      Adegboyega, T.T. (North-West University, 2019-07)
      Legumes in some cases are underutilized and form only a relatively small proportion of human diets. In general they fix atmospheric nitrogen which may provide an economic advantage for smallholder farmers. By appropriate utilization of legumes, food security and soil fertility can be significantly achieved. During the 2016/2017 and 2017/2018 cropping seasons at the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria, field and laboratory experiments were conducted to determine ...
    • Reduction of tomato losses through implementation of simple postharvest techniques using rosemary (Rosmarinus officinalis) essential oil in Bushi, Democratic Republic of the Congo 

      Sibomana, I.C. (University of Yaounde, 2020)
      Tomato is perishable and its high moisture content makes it susceptible for various postharvest losses. Tomato quality changes continuously after harvesting when fruits start losing quality because of environmental stress and pathogen infection. Thus, the objective of this research was to propose simple postharvest technology using rosemary essential oil (REO) to reduce postharvest decay. This was done by conducting a field survey in order to determine agricultural potential of soil and environmental ...
    • Frontline remote sensing tool to locate hidden traits in root and tuber crops 

      Fernando, E.A.J.; Selvaraj, M.; Delgado, A.; Rabbi, I.Y.; Kulakow, P. (2022-10-03)
    • The role of knowledge in the acceptance of organic and human waste recycling: the case of Rwanda's food system 

      Vogel, S. (Swiss Federal Institute of Technology, 2020-05-15)
      By 2050, the world’s population is expected to increase to 9 billion people. The growing population intensifies urbanization, which puts pressure on the current challenges of food insecurity and environmental pollution. In Rwanda, rural migration and the lack of financial capital to apply sufficient fertilizer result in nutrient-deficient agricultural soils which lead to a decrease in food production. Moreover, the rapid urban expansion leads to environmental pollution and human health risks from ...
    • Effect of soil conservation on productivity and food security on maize farmers in northwest Nigeria 

      Oladimeji, T.E. (Ahmadu Bello University, 2019-09)
      The adoption of soil conservation practices is important for sustaining Nigerian agriculture where smallholder maize farmers face constraints such as low soil fertility that lead to low productivity and food insecurity. This study aims to analyze the effect of soil conservation on productivity and food security of maize farmers in Northwest Nigeria. The study used a two year panel data of 792 maize farmers for 2016 and 2017 cropping seasons, collected by IITA under “Taking Maize Agronomy to Scale ...
    • Optimising locally available resources for nutrient management to improve banana productivity in the farming systems in Rombo District, Kilimanjaro region 

      Rutazaha, J.E. (Sokoine University of Agriculture, 2019)
      Banana is an important staple food in East Africa and an essential cash crop in the national and local economies. In Kagera and Kilimanjaro regions of Tanzania, banana is cultivated by more than 70% of smallholder farmers as a staple food in home gardens ranging from 0.5 to 2 hectares. Decline in banana yield has been reported in banana farming systems as a result of abiotic constraints (nutrient deficiencies and drought stress) and biotic constraints (pests and diseases). Decline in soil fertility ...
    • Socio economic and botanic analysis of West Bank and Block A Forest of International Institute of Tropical Agriculture (IITA), Ibadan, Oyo State, Nigeria 

      Ariyo, O.C. (Federal University of Agriculture, Abeokuta, 2018-09)
      Forests are community of plants (vegetation) dominated by trees and are crucial to the welfare of man. Socio- economic and botanic analysis of West Bank and Block A Forests of International Institute of Tropical Agriculture (IITA) was undertaken with the aim of determining the uses, structure, composition, similarity, extent of diversity of the forests, types and quantity of non- timber forest products (NTFPs) collected from the forests. The determinants of medicinal plants usage and intensity ...
    • Effect of organic amendment on soil carbon dynamics in agricultural ecosystems 

      Hamamoto, T. (Hokkaido University, 2020-03-25)
      Soil carbon (C) contents and dynamics are important in the maintenance of health soils. Organic amendments (e.g. crop residue and organic manure) are known as materials to increase soil C. The degradation of organic amendments and physical disturbance of soils, performed by the fauna, can alter soil microbial community, and thus influence rates of the C cycles. However, little is known about the interaction between different soil biological communities (i.e. soil fauna and microbes) regarding soil ...
    • Equal and inclusive opportunity to access and use of ICT-based crop extension services for farm-level actors in Rwanda: a case study of the ICT4BXW project 

      Blom, F. (Wageningen University and Research Center, 2020-03-31)
      All farmers around the world have a need for information. Information communication technology (ICT) could make access to information easier (Palumbo, 2013) (Aker & Mbiti, 2010) (van Winden, 2011). Others do however claim that the use of ICT excludes certain users from accessing information (Diga, Fortune, & Plantinga, 2013) (Njoki & Wabwoba, 2014) (Waugaman, 2016). Not only the use of ICT but also the design of the ICT platform could exclude users from access to information (Clarkson, Dong, & ...
    • Diversity and distribution of whiteflies colonizing cassava in eastern Democratic Republic of Congo 

      Casinga, C.M.; Wosula, E.N.; Sikirou, M.; Shirima, R.R.; Munyerenkana, C.M.; Nabahungu, N.L.; Bashizi, K.B.; Ugentho, H.; Monde, G.; Legg, J. (2022)
      The present study characterizes Bemisia tabaci and Bemisia afer from cassava in eastern Democratic Republic of Congo (DRC). The Mitochondrial COI sequencing revealed the occurrence of six cassava B. tabaci mitotypes, which were designated into four haplogroups (SSA-ECA, SSA-CA, SSA2, and SSA-ESA) using KASP SNP genotyping. SSA-ECA (72%) was the most prevalent and occurred in the northern part of the surveyed area, in the Ituri and Nord/Sud-Kivu provinces, whilst SSA-CA (21%) was present in the ...
    • N2Africa: where agroecology meets biotechnology 

      Giller, K.; Baijukya, F.; Ampadu-Boakye, T.; de Jager, I. (N2Africa, 2020)
    • Nematode biodiversity in south-western Nigerian watermelon cropping systems, with reference to Meloidogyne and its management 

      Bello, T.T. (North-West University, 2020-05)
      Watermelon is increasingly produced and consumed in Nigeria and sub-Saharan Africa (SSA). However, limited information exists regarding the nematode fauna associated with the crop. Therefore, the overall aim of this study was to determine the nematode assemblages associated with watermelon, to investigate the reproduction potential of populations of the predominant plant-parasitic nematodes identified and to assess the host status of commercially available cultivars in south-west Nigeria to the ...
    • Site-specific nutrient management advice and agricultural intensification in maize-based systems in Nigeria 

      Oyinbo, O. (Katholieke Universiteit Leuven, 2019-12)
      Despite the potentially large gains from intensification and agricultural productivity growth in Sub-Saharan Africa (SSA), yields of staple crops, such as maize are far below attainable yields. Depletion of soil fertility associated with low and inappropriate use of nutrients play a crucial role in this. Yet, fertilizer use is low in SSA, which partly relates to information constraints. Relaxing such constraints via agricultural extension interventions is expected to produce positive outcomes but ...
    • Assessing the effect of the plant growth promoting fungi Trichoderma asperellum in banana (Musa spp.): evaluation under greenhouse conditions 

      Van den Bergh, A. (Katholieke Universiteit Leuven, 2019-06)
      Bananas (Musa spp.) are one of the most important crops in the global food crop industry, the second most important fruit crop and an important staple crop around the world. Due to the increased trend in global population, a raise in the intensity in crop productivity is needed. The use of plant growth-promoting microorganisms (PGPM) could be an alternative to improve the stress-tolerance and productivity of crops, thus, reducing the amount of chemical pesticides and fertilizers needed. Trichoderma ...
    • Monitoring and management of transboundary crop nematodes: proceedings of the First Belt and Road International Nematology Symposium 

      Deliang, P.; Duncan, L.W.; Wenkun, H.; Coyne, D. (Chinese Academy of Agricultural Sciences, 2020)
    • Estimating the impact of COVID-19 on small and medium scale enterprise: evidence from Nigeria. 

      Abioye, O.; Adebayo, O.; Kehinde, O. (2020)
      This paper examines the effect of COVID-19 related cases and lockdown measures on the issues related to Small and Medium Scale Enterprise in Nigeria. Using an electronic data collection approach, this study analyzes the data using the linear probability model to estimate the effect of the pandemic on the entrepreneurs and model the factors influencing coping strategies using a multivariate probit model. We found that majority of the entrepreneurs have been affected (both severely and slightly) by ...