Journal and Journal Articles: Recent submissions

Now showing items 361-380 of 5266

    • TARIBAN1, TARIBAN2, TARIBAN3, and TARIBAN4 'Matooke' cooking banana cultivars for the Great Lakes Region of Africa 

      Madalla, N.; Massawe, C.; Shimwela, M.; Mbongo, D.; Kindimba, G.; Kubiriba, J.; Arinaitwe, I.K.; Nowakunda, K.; Namanya, P.; Tumuhimbise, R.; Okurut, A.W.; Saria, A.; Ngomuo, M.; Swennen, R.; Brown, A.; Batte, M.; Carpentier, S.C.; Van den Bergh, I.; Crichton, R.J.; Marimo, P.; Weltzien, E.; Ortiz, R. (2022-12-22)

    • Nutritional benefits of improved post-harvest handling practices for maize and common beans in Northern Tanzania: a quantitative farm-level assessment 

      Mutungi, C.; Tungu, J.; Amri, A.; Gaspar, A.; Abass, A. (2022-01)
      The efficacy of improved post-harvest practices for reducing food losses is often reported, but the nutritional benefits remain much less expounded. Meanwhile, nutrient concentration changes during the post-harvest period can influence potential nutrition gains targeted to benefit households. We analyzed contents of selected nutrients in farmers’ maize and common bean stocks under ordinary and improved practices at different post-harvest stages and related them to the physical quality. The improved ...

    • Evaluating the performance of lateral flow devices for total aflatoxins with special emphasis on their robustness under sub-Saharan conditions 

      Cvak, B.; Warth, B.; Atehnkeng, J.; Parich, A.; Moritz, A.; Sulyok, M.; Krska, R. (2021-10-20)
      As aflatoxins are a global risk for humans and animals, testing methods for rapid on-site screening are increasingly needed alongside the standard analytical laboratory tools. In the presented study, lateral flow devices (LFDs) for rapid total aflatoxin screening were thoroughly investigated with respect to their matrix effects, cross-reactivity, their performance under harsh conditions in Sub-Saharan Africa (SSA), and their stability, as well as when compared with liquid chromatography-tandem ...

    • Physiological responses of cowpea simultaneously exposed to water deficit stress and varying light intensities at vegetative and reproductive growth stages 

      Adeniyi, O.I.; Adejumo, S.A.; Fofana, M.; Adegbehingbe, F.T. (2022-11-09)
      A combination of stresses as it occurs on the field poses more challenges to crop production than individual stress. Crops’ response to single stress also differs from that of combined stresses. The morpho-physiological responses of two cowpea varieties (IT89KD-288 and IT99K573-1-1) to a combination of stresses (water deficit stress and high light intensity) were investigated at different growth stages. Three levels of light intensities (L3: 259 Lux- 36%, L2: 394 Lux-55% and L1: 710.2 Lux-100%) ...

    • Characterization of macro and micro-minerals in cassava leaves from genotypes planted in three different agroecological locations in Nigeria 

      Alamu, E.O.; Dixon, A.; Eyinla, T.; Maziya-Dixon, B. (2022-11)
      Diversity in the mineral composition of cassava leaves bred in sub-Saharan Africa has not been fully investigated. This study characterized macro and micro-minerals in 400 genotypes of Cassava leaves planted in three different agroecological environments in Nigeria. Laboratory analysis of the leaves was done using an Inductively Coupled Optical Emission Spectrometer. Across all three locations sampled in this study, the iron content ranged from 43 to 660 mg/kg, zinc from 16 to 440 mg/kg, Manganese ...

    • Parasitism of the whitefly Bemisia tabaci by aphelinid parasitoids on cassava across five agro-ecological zones of Cameroon 

      Tize, I.; Nukenine, E.; Fotso Kuate, A.; Doumtsop, A.R.P.; Nanga, S.N.; Ajebesone, F.N.; Kulakow, P.; Kumar, P.L.; Fiaboe, K.; Hanna, R. (2023-03-28)
      The whitefly Bemisia tabaci (Gennadius) is the vector of cassava mosaic viruses causing cassava viral diseases, which are the most important biotic constraints of cassava production in sub-Saharan Africa (SSA). Presently, B. tabaci management in cassava fields calls for the development of an integrated approach that relies on host plant resistance and biological control. Data on B. tabaci's natural enemies, particularly parasitoids, in Central Africa are limited. Field surveys were conducted from ...

    • Genetic purity of yam (Dioscorea spp.) multiplied through different seed multiplication techniques based on DArT SNP markers 

      Maroya, N.; Agre, A.P.; Balogun, M. (2023-04-04)
      Obtaining high-quality planting material for cultivation is a persisting challenge for yam (Dioscorea spp.) production in Africa. Efforts to provide a solution to this challenge have led to varying seed multiplication techniques but whose efficiency in maintaining the genetic purity of yam genotypes during the rapid multiplication process is yet unknown. Three improved varieties Swaswa, Kpamyo and Asiedu were multiplied through tissue culture, aeroponics system, field condition and vine cutting ...

    • Temporal changes in minimum and maximum temperatures at selected locations of southern Africa 

      Mupangwa, W.; Chipindu, L.; Ncube, B.; Mkuhlani, S.; Nhantumbo, N.; Masvaya, E.; Ngwira, A.; Moeletsi, M.; Nyagumbo, I.; Liben, F. (2023-04-06)
      Agriculture is threatened by ever increasing temperatures and this trend is predicted to continue for the near and distant future. The negative impact of rising temperatures on agri-food systems is also compounded by the erratic and highly variable rainfall in most parts of southern Africa. Minimum and maximum temperatures’ variability and trend analysis were undertaken using daily time series data derived from 23 meteorological stations spread across Malawi, Mozambique, South Africa and Zimbabwe. ...

    • Characterising quality traits of boiled yam: texture and taste for enhanced breeding efficiency and impact 

      Adinsi, L.; Moussa, I.D.; Honfozo, L.; Bouniol, A.; Meghar, K.; Alamu, E.O.; Adesokan, M.; Arufe, S.; Ofoeze, M.; Okoye, B.; Madu, T.; Hotegni, F.; Chijioke, U.; Otegbayo, B.; Dufour, D.; Hounhouigan, J.D.; Ceballos, H.; Mestres, C.; Akissoe, N.H. (2023-03-30)
      Background: Boiled yam key quality attributes typical for West African consumers are: crumbly, easy to break, and sweet taste. New yam varieties are being developed but high or medium throughput tools to assess the required quality traits and their range of acceptance are limited. This study assessed the acceptance thresholds of these quality attributes and established the predictive models for screening yam varieties that meet the required consumers' preferences. Results: Overall liking was ...

    • Extrapolation suitability index for sustainable vegetable cultivation in Babati district, Tanzania. 

      Muthoni, F.K.; Delore, J.M.; Lukumay, P.J.; Justus, O. (2023-04-03)
      Land suitability assessment matches crop requirements with available resources to promote sustainable production. Scaling out of sustainable agricultural intensification practices to suitable biophysical and socio-economic conditions reduces the risk of failure and increases their adoption rate. This study applies a geospatial framework to identify potentially suitable sites for extrapolating two improved vegetable cultivars grown under integrated management practices (IMP’s) in Babati District ...

    • Effective Striga control and yield intensification on maize farms in western Kenya with N fertilizer and herbicide-resistant variety 

      Roobroeck, D.; Kimutai, G.; Kanampiu, F.; Ng'etich, W.; Roing de Nowina, K.; Vanlauwe, B. (2023-05-15)
      Context Maize production in western Kenya is limited by the spread of parasitic weed Striga hermonthica and depletion of soil nutrient stocks. Nitrogen (N) fertilizer and imidazolinone resistant (IR) maize are key elements in the agronomic toolbox to control infestations and enhance yields Research question The circumstances under which their use, individually or combined, is most effective on farmer fields have not been well documented. Inappropriate management decisions and low returns on ...

    • Multi-trait selection index for superior agronomic and tuber quality traits in bush yam (Dioscorea praehensilis Benth.) 

      Adewumi, A.S.; Asare, P.A.; Adejumobi, I.I.; Adu, M.O.; Taah, K.J.; Adewale, S.; Mondo, J.; Agre, A.P. (2023-02-26)
      Dioscorea praehensilis Benth. is a semi-wild yam species and a valuable source of resistance trait genes. To access the agronomic and tuber quality performance, eleven quantitative phenotypic traits were used to discriminate and identify promising accessions among 162 accessions of D. praehensilis collected in Ghana. Significant and high genetic variability (p < 0.001) for all eleven quantitative traits was found among the evaluated accessions. Moderate broad-sense heritability (H2) (30–60%) was ...

    • Genome-wide association studies of Striga resistance in extra-early maturing quality protein maize inbred lines 

      Okunlola, G.; Badu-Apraku, B.; Ariyo, O.; Agre, P.; Offernedo, Q.N.; Ayo-Vaughan, M.A. (2023-02)
      Identification of genes associated with Striga resistance is invaluable for accelerating genetic gains in breeding for Striga resistance in maize. We conducted a genome-wide association study to identify genomic regions associated with grain yield and other agronomic traits under artificial Striga field infestation. One hundred and forty-one extra-early quality protein maize inbred lines were phenotyped for key agronomic traits. The inbred lines were also genotyped using 49,185 DArTseq markers ...

    • COVID-19 outbreak and rural household food security in the western Democratic Republic of the Congo 

      Manyong, V.; Bokanga, M.; Dieu-Merci, A.N.; Bamba, Z.; Adeoti, R.; Mwepu, G.; Cole, S.M.; Dontsop-Nguezet, P. (2022-12)
      Although global assessments of the initial impacts of the coronavirus disease (COVID-19) have focused on income, jobs, and health conditions, this study constitutes one of the first studies that assessed the impact of COVID-19 on food security in DRC and established the short-term implications of the COVID-19 outbreak on rural households’ food security in DRC. In addition, the study recommendations contributed to shaping government interventions toward the pandemic in the Country. The study used ...

    • The differential impact of four tropical species of root-knot nematodes (Meloidogyne spp.) on biofortified cassava 

      Oyetunde, A.K.; Afolami, S.; Kulakow, P.; Coyne, D. (2022-05-10)
      Cassava plays an important food security role in Africa. Although a hardy crop in general, average yields are low, while traditional cultivars tend to be low in nutrients and vitamins. Substantial efforts have therefore been made to improve the nutritional quality of cassava through the development of biofortified cultivars. Although root-knot nematodes (RKN) are among the various important constraints affecting production, details on the impact of different species of RKN on cassava productivity ...

    • Chemical and pasting properties of potato flour (Solanum tuberosum L.) in relation to different processing techniques 

      Buzera, A.; Nkirote, E.; Abass, A.; Orina, I.; Sila, D. (2023-03-29)
      Processing potato tubers into flour can be done using various methods, which can impact the flour’s nutritional and pasting properties. This study evaluated the effects of five different processing methods, namely, low-temperature blanching, followed by oven drying (LTB_OD), high-temperature blanching followed by oven drying (HTB_OD), boiling followed by oven drying (Boiling_OD), freeze drying (FD), and oven drying (OD), on the nutritional and pasting properties of potato flour derived from Shangi ...

    • Lessons from integrated seasonal forecast-crop modelling in Africa: a systematic review 

      Mkuhlani, S.; Zinyengere, N.; Kumi, N.; Crespo, O. (2022-11-07)
      Seasonal forecasts coupled with crop models can potentially enhance decision-making in smallholder farming in Africa. The study sought to inform future research through identifying and critiquing crop and climate models, and techniques for integrating seasonal forecast information and crop models. Peer-reviewed articles related to crop modelling and seasonal forecasting were sourced from Google Scholar, Web of Science, AGRIS, and JSTOR. Nineteen articles were selected from a search outcome of 530. ...

    • Exploring the bush yam (Dioscorea praehensilis benth) as a source of agronomic and quality trait genes in white guinea yam (dioscorea rotundata poir) breeding 

      Adewumi, A.S.; Agre, A.P.; Asare, P.A.; Adu, M.O.; Taah, K.J.; Mondo, J.; Akaba, S. (2022-12-27)
      Yam (Dioscorea spp.) is an important food security crop in the tropics and subtropics. However, it is characterized by a narrow genetic base within cultivated and breeding lines for tuber yield, disease resistance, and postharvest traits, which hinders the yam breeding progress. Identification of new sources of desirable genes for these traits from primary and secondary gene pools is essential for this crop improvement. This study aimed at identifying potential sources of genes for yield and quality ...

    • Nitrogen budgets and nitrogen use efficiency as agricultural performance indicators in Lake Victoria basin 

      Ntinyari, W.; Gweyi-Onyango, J.; Giweta, M.; Mutegi, J.; Mochoge, B.; Nziguheba, G.; Masso, C. (2022-10-21)
      Too little nitrogen (N) is a threat to crop productivity and soil fertility in subSaharan Africa (SSA). Nitrogen budgets (NB) and nitrogen use e ciency (NUE) are critical tools for assessing N dynamics in agriculture and have received little or no attention in the region. Data were collected from smallholder farmers clustered into two categories, farmers applying and farmers not applying N fertilizers. NB were calculated using the Coupled Human and Natural Systems (CHANS) model approach for field ...

    • Characterization of starches from some selected white and yellow cassava roots for dry starch noodle production 

      Akinde, H.A.; Sanni, L.; Shittu, T.; Adegunwa, M.; Abass, A.; Awoyale, W. (2022-07-11)
      Starch noodle, originally produced from mung bean starch, is now patronized in many parts of the world. Although cassava is one of the most abundant sources of starch in Nigeria, previous works determining its applicability for noodle production are scarce in literature. This study therefore determined the chemical properties of starches from selected white and yellow cassava for dry starch noodle production. Descriptive attributes and sensory acceptability of the starch noodle produced were also ...