Now showing items 221-240 of 5157

    • Evaluating the use of nitrogen and phosphorous fertilization as crop management options for maize adaptation to climate change in the Nigeria savannas 

      Tofa, A.; Kamara, A.; Babaji, B.A.; Adnan, A.A.; Ademulegun, T.; Bebeley, J.F. (2023-05-04)
      Poor soil fertility and climate variability are major constraints to maize production in the Nigeria savannas. The application of nitrogen (N) and phosphorus (P) as adaptation strategy may enhance maize yield under climate change. In this study, the already calibrated and validated CERES-maize model in DSSAT was used to simulate the response of maize varieties to N and P in three agroecological zones. Similarly, the model, coupled with data for representative concentration pathways (RCP4.5 and ...
    • Expression of symptoms elicited by a hammerhead viroid through RNA silencing is related to population bottlenecks in the infected host 

      Serra, P.; Navarro, B.; Forment, J.; Gisel, A.; Gago‐Zachert, S.; Di Serio, F.; Flores, R. (2023-05-06)
      Chlorosis is frequently incited by viroids, small nonprotein-coding, circular RNAs replicating in nuclei (family Pospiviroidae) or chloroplasts (family Avsunviroidae). Here, we investigated how chrysanthemum chlorotic mottle viroid (CChMVd, Avsunviroidae) colonizes, evolves and initiates disease. Progeny variants of natural and mutated CChMVd sequence variants inoculated in chrysanthemum plants were characterized, and plant responses were assessed by molecular assays. We showed that: chlorotic ...
    • Uptake of agroforestry-based crop management in the semi-arid Sahel – Analysis of joint decisions and adoption determinants. 

      Grovermann, C.; Rees, C.; Beye, A.; Assfaw Wossen, T.; Abdoulaye, T.; Cicek, H. (2023-03-23)
      Introduction: Agroforestry plays a vital role in maintaining and developing the resilience and productivity of farms and landscapes. Scientific evidence from the Sahel region suggests that integration of trees and shrubs has the potential to improve temperature and moisture levels whilst providing bio-based fertilizer that contributes to increased yields of annual crops. However, little is known about the factors that influence the di􀀀usion of agroforestry. This study examines joint decisions on ...
    • Yield performance and stability analysis of promising soybean genotypes under contrasting environments in the semi-arid zone of Sudan 

      Ngalamu, T.; Bulli, P.; Meseka, S.K. (2023-04-21)
      Background: The challenge to food security posed by climate change and coupled with the substantial rise in the global population, necessitate a shift in crop improvement programmes towards developing crop cultivars with stable and high yield potentials across a wide range of agro-ecological conditions. Methods: New high yielding crop varieties with stable performance across environments are enabling the expansion of their production area into non-traditional environments with semi-arid climates. ...
    • Are digital services the right solution for empowering smallholder farmers? A perspective enlightened by COVID-19 experiences to inform smart IPM. 

      Sekabira, H.; Tepa-Yotto, G.; Ahouandjinou, A.R.; Thunes, K.H.; Pittendrigh, B.; Kaweesa, Y.; Tamò, M. (2023-02-03)
      The COVID-19 pandemic, surprised many through its impact on the food systems, resulting in collapses in the food production value chains and in the integrated pest disease management sector with fatal outcomes in many places. However, the impact of COVID-19 and the digital experience perspective on Integrating Pest Management (IPM) is still yet to be understood. In Africa, the impact was devastating, mostly for the vulnerable smallholder farm households, who were rendered unable to access markets ...
    • Impact of CS-IPM on key social welfare aspects of smallholder farmers' livelihoods 

      Sekabira, H.; Tepa-Yotto, G.; Kaweesa, Y.; Simbeko, G.; Tamo, M.; Agboton, C.; Damba, O.T.; Abdoulaye, T. (2023-04-29)
      All stakeholders, especially households that depend on agriculture, must come up with every avenue available to improve farm productivity in order to raise yields due to the constraints posed by climate change on food production systems. Sufficient increments in yields will address the challenges of food insecurity and malnutrition among vulnerable households, especially smallholder ones. Yield increases can be achieved sustainably through the deployment of various Climate Smart Integrated Pest ...
    • Socio-economic determinants for the deployment of Climate-Smart One-Health innovations. A meta-analysis approach prioritizing Ghana and Benin 

      Sekabira, H.; Tepa-Yotto, G.; Tamo, M.; Djouaka, R.F.; Dalaa, M.A.; Damba, O.T.; Yeboah, S.; Obeng, F.; Asare, R.; Abdoulaye, T.; Nazziwa, L. (2023)
      An ecosystem is inhabited by organisms that rely on it for their livelihoods. For an ecosystem to sustain life, its life-supporting components must be alive to be able to preserve both the ecosystem’s life-supporting components like soil, vegetation, water, etc., and the living organisms inhabiting the ecosystem like humans, birds, domestic, and wild animals, termed as the One-Health concept. This is indispensable for the sustainability of life. Several factors determine the ability of the ecosystem ...
    • Development of a pilot scale energy efficient flash dryer for cassava flour 

      Adegbite, S.A.; Asiru, W.B.; Sartas, M.; Tran, T.; Taborda, L.A.; Chapuis, A.; Ojide, M.; Abass, A. (2023-09)
      Cassava’s transformation into an industrial raw material necessitates new processing techniques that improve quality while lowering processing costs. Drying has been identified as a major bottleneck in the production of high-quality cassava flour (HQCF) and expansion of its industrial application in Sub-Sahara African. This has triggered efforts towards developing an energy-efficient flash dryer for cassava flour/starch production at a small scale. A scaled-up version of the prototype flash dryer ...
    • Amylose, rheological and functional properties of yellow cassava flour as affected by pretreatment and drying methods 

      Ekeledo, E.; Latif, S.; Abass, A.; Muller, J. (2023-12)
      This study reconnoitered the effects of preservative treatments (0.3% Sodium Metabisulphite solution (SMS); and 0.3% Citric Acid solution (CAS)) and drying methods (flash- and cabinet-drying) on the rheological profile, amylose and functional properties of flour from yellow-fleshed cassava varieties. Four preservative-treated flour samples (Sodium Metabisulphite cabinet-dried (SMC); Sodium Metabisulphite flash-dried (SMF); Citric Acid cabinet-dried (CAC); and Citric Acid flash-dried (CAF) were ...
    • End-user quality characteristics and preferences for cassava, yam and banana products in rural and urban areas - a review 

      Osunbade, A.O.; Alamu, E.O.; Awoyale, W.; Akinwande, B.; Adejuyitan, A.; Maziya-Dixon, B. (2023-05-01)
      The review attempted to evaluate the quality attributes and the preferred selected roots, tubers, and bananas (RTB) items (gari/eba, lafun, yam flour, pounded yam, boiled yam, and plantain flour) among the end-users in Nigeria’s rural, peri-urban, and urban segments. The results showed that depending on location, consumers’ preferred quality attributes of gari in the rural area are dry, bright/shiny, white, sweet, dense, fine, cooked aroma and sour/sweet gari. Cooked yam attributes include white ...
    • Analysis of adoption of conservation agriculture practices in southern Africa: mixed-methods approach 

      Tufa, A.H.; Kanyamuka, J.S.; Alene, A.; Ngoma, H.; Marenya, P.P.; Thierfelder, C.; Banda, H.; Chikoye, D. (2023)
      In southern Africa, conservation agriculture (CA) has been promoted to address low agricultural productivity, food insecurity, and land degradation. However, despite significant experimental evidence on the agronomic and economic benefits of CA and large scale investments by the donor community and national governments, adoption rates among smallholders remain below expectation. The main objective of this research project was thus to investigate why previous efforts and investments to scale CA ...
    • A review of the use of Near-Infrared Hyperspectral Imaging (NIR-HSI) techniques for the non-destructive quality assessment of root and tuber crops 

      Adesokan, M.; Alamu, E.O.; Otegbayo, B.; Maziya-Dixon, B. (2023-04-22)
      Hyperspectral imaging (HSI) is one of the most often used techniques for rapid quality evaluation for various applications. It is a non-destructive technique that effectively evaluates the quality attributes of root and tuber crops, including yam and cassava, and their food products. Hyperspectral imaging technology, which combines spectroscopy and imaging principles, has an advantage over conventional spectroscopy due to its ability to simultaneously evaluate the physical characteristics and ...
    • Perspective article: food security in tropical Africa through climate-smart plant health management 

      Neuenschwander, P.; Borgemeister, C.; De Groote, H.; Saethre, M.G.; Tamo, M. (2023)
      Each year, Africa loses half of its harvest to pests (insects, pathogens, nematodes, weeds). To offset these losses and improve food security, pest management needs to be revamped urgently. Based on a synthesis of all 58 pest management projects conducted by IITA in its 55-year history, we advocate here for the implementation of the five following key climate-smart interventions, which have been shown to increase yields and decreasing CO2 outputs compared to the current practices that are largely ...
    • Pathogenicity of Beauveria bassiana (Balsamo-Crivelli) and Metarhizium anisopliae (Metschnikoff) isolates against life stages of Zeugodacus cucurbitae (Coquillett) (Diptera: Tephritidae) 

      Hintenou, M.; Omoloye, A.; Douro Kpindou, O.; Karlsson, M.F.; Djouaka, R.F.; Bokonon-Ganta, A.H.; Tamo, M. (2023-04-25)
      Background Entomopathogenic fungi are primary pathogens that naturally affect insect pests by suppressing their populations and considered as an ecofriendly agents. The present study aimed to evaluate in vitro activity of different isolates of Beauveria bassiana and Metarhizium anisopliae against the development of larval stages of the Cucurbit fruit fly, Zeugodacus cucurbitae (Coquillett) (Diptera: Tephritidae). Results Larval mortality was significantly high with B. bassiana isolate Bb337 ...
    • Narrowing yield gaps does not guarantee a living income from smallholder farming-an empirical study from western Kenya 

      Marinus, W.; Descheemaeker, K.; van de Ven, G.W.; Vanlauwe, B.; Giller, K. (2023-04-20)
      Crop yields in sub-Saharan Africa need to increase to keep pace with food demands from the burgeoning population. Smallholder farmers play an important role in national food self-sufficiency, yet many live in poverty. Investing in inputs to increase yields is therefore often not viable for them. To investigate how to unlock this paradox, whole-farm experiments can reveal which incentives could increase farm production while also increasing household income. In this study we investigated the impact ...
    • Assessing the skill of gridded satellite and re-analysis precipitation products over altitudinal gradient in east and southern Africa 

      Muthoni, F.K.; Msangi, M.; Kigosi, E. (2023-04-06)
      Validation of gridded precipitation products (GPP's) increases the confidence of the users and highlights possible improvements in the algorithms to handle complex rain forming processes. We evaluated the skill of three GPP's (CHIRPS-v2, CHELSA, and TerraClimate) in estimating the gauge observations and compared the precipitation trends derived from these products across the East and Southern Africa (ESA) region. We used Taylor diagrams and Kling-Gupta Efficiency (KGE) to assess the accuracy. A ...
    • Framework for Incorporating Gender Equality and Social Inclusion (GESI) elements in Climate Information Services (CIS) 

      Mapedza, E.; Huyer, S.; Chanana, N.; Rose, A.; Jacobs-Mata, I.; Mudege, N.N.; Tui, S.H.K.; Gbegbelegbe, S.; Nsengiyumva, G.; Mutenje, M.; Nohayi, N. (2023-01)
      We advance a gender equality and social inclusion (GESI) framework for incorporating climate information services (CIS), which is now becoming central due to the ongoing climate change and climate variability. We understand gender as a social construct of who women and men are supposed to be. Gender inequalities seem to be enduring such that, despite innovations in agricultural and climate information technologies, unequal gender power dynamics will still emerge. As far back as the 1960s, the ...
    • Agronomic and economic performance of legume-legume and cereal-legume intercropping systems in Northern Tanzania 

      Kinyua, M.; Kihara, J.; Bekunda, M.; Bolo, P.; Mairura, F.S.; Fischer, G.; Mucheru-Muna, M. (2023-02)
      CONTEXT Cereal-legume intercropping, a common practice among farmers in sub-Saharan Africa (SSA), is important for crop diversification, soil fertility improvement, household nutrition and climate adaptation. However, cereals often outcompete the intercropped legumes for growth resources resulting in low legume yields. OBJECTIVE The objectives of this study were: i) assessing the effects of different intercropping options (crop spatial configurations) and maize crop (Zea mays L.) management ...
    • The effect of communication media on the uptake of agricultural innovations in selected states of Nigeria 

      Atser, G.; Dixon, A.; Ekeleme, F.; Hauser, S.; Fadairo, O.; Adekoya, A.; Ayanwale, A.B.; Agada, M.; Oladokun, I.; Akpu, P.; Sanni, L.; Pypers, P.; Ampadu-Boakye, T.; Vanlauwe, B. (2022-09-21)
      Purpose Poor uptake of agricultural innovations on weed management practices is a major factor responsible for low productivity. This paper examines how communication media can help improve farmers’ adoption behaviour. Methodology A sample of 725 Nigerian cassava farmers, exposed to agricultural innovation on weed management practices from varying sources, were asked, through a structured questionnaire, to indicate their knowledge, attitudes, and practices of cassava weed management. The responses ...
    • The banana genome hub: a community database for genomics in the Musaceae 

      Droc, G.; Martin, G.; Guignon, V.; Summo, M.; Sempere, G.; Durant, E.; Soriano, A.; Baurens, F.C.; Cenci, A.; Breton, C.; Shah, T.; Aury, J.M.; Ge, X.J.; Harrison, P.H.; Yahiaoui, N.; D'Hont, A.; Rouard, M. (2022-01-05)
      The Banana Genome Hub provides centralized access for genome assemblies, annotations, and the extensive related omics resources available for bananas and banana relatives. A series of tools and unique interfaces are implemented to harness the potential of genomics in bananas, leveraging the power of comparative analysis, while recognizing the differences between datasets. Besides effective genomic tools like BLAST and the JBrowse genome browser, additional interfaces enable advanced gene search ...