Now showing items 81-100 of 5157

    • Integrating APSIM model with machine learning to predict wheat yield spatial distribution 

      Kheir, A.M.S.; Mkuhlani, S.; Mugo, J.W.; Elnashar, A.; Nangia, V.; Devare, M.; Govind, A. (2023-09)
      Traditional simulation models are often point based; thus, more research is needed to emphasize spatial simulation, providing decision-makers with fast recommendations. Combining machine learning algorithms with spatial process-based models could be considered an appropriate solution. We created a spatial model in R (APSIMx_R) to generate fine-resolution data from coarse-resolution data, which is typically available at the regional level. The APSIM crop model outputs were then deployed to train ...
    • Large language models and agricultural extension services 

      Tzachor, A.; Devare, M.; Richards, C.; Pypers, P.; Ghosh, A.; Koo, J.; Johal, S.; King, B. (2023-11)
      Several factors have traditionally hampered the effectiveness of agricultural extension services, including limited institutional capacity and reach. Here we assess the potential of large language models (LLMs), specifically Generative Pre-trained Transformer (GPT), to transform agricultural extension. We focus on the ability of LLMs to simplify scientific knowledge and provide personalized, location-specific and data-driven agricultural recommendations. We emphasize shortcomings of this technology, ...
    • Impact of agribusiness empowerment interventions on youth livelihoods: insight from Africa 

      Adeyanju, D.; Mburu, J.; Gituro, W.; Chumo, C.; Mignouna, D.; Mulinganya, N. (2023-11)
      This study generates evidence to understand the impact of agribusiness empowerment programmes on youth livelihoods in developing countries based on the ENABLE-TAAT programme implemented in Kenya, Nigeria, and Uganda. A multistage sampling technique was used in obtaining primary agribusiness-level data from a sample of 1435 young agripreneurs from the study countries. An Endogenous Treatment Effect Regression (ETER) model was used to assess the impact of programme participation on youth livelihoods ...
    • Genetic diversity and population structure of cacao (Theobroma cacao L.) germplasm from Sierra Leone and Togo based on KASP- SNP genotyping 

      Bhattacharjee, R.; Luseni, M.M.; Ametefe, K.; Agre, P.A.; Kumar, P.L.; Grenville-Briggs, L.J. (2023)
      Background Cacao (Theobroma cacao L.) is a tropical tree species belonging to Malvaceae family and originated in the lowland rainforests of the Amazon. It is one of the major agricultural commodities contributing towards the GDP (gross domestic product) of West African countries contributing about 70% of world’s production. Methodology A sample of 376 cacao (Theobroma cacao L.) germplasm accessions (235 from Sierra Leone and 141 from Togo) collected from different seed gardens and farmers’ fields ...
    • Genome-wide association analysis of phenotypic traits in Bambara groundnut under drought-stressed and non-stressed conditions based on DArTseq SNP 

      Odesola, K.A.; Olawuyi, O.J.; Paliwal, R.; Oyatomi, O.; Abberton, M. (2023)
      Introduction: Bambara groundnut (BG) (Vigna subterranea [L.] Verdc) is an indigenous, resilient, but underutilized leguminous crop that occurs mostly as genetically heterogeneous landraces with limited information on the drought tolerant attributes. This study elucidates the associations between sequencing-based diversity array technology (DArTseq) and phenotypic character as well as differing indices related to drought tolerance in one hundred accessions of Bambara groundnut. Methods: The field ...
    • Genome-wide association study revealed SNP alleles associated with seed size traits in African yam bean (Sphenostylis stenocarpa (Hochst ex. A. Rich.) harms) 

      Olomitutu, O.E.; Paliwal, R.; Abe, A.; Oluwole, O.O.; Oyatomi, O.; Abberton, M. (2023)
      Seed size is an important yield and quality-determining trait in higher plants and is also crucial to their evolutionary fitness. In African yam bean (AYB), seed size varies widely among different accessions. However, the genetic basis of such variation has not been adequately documented. A genome-wide marker-trait association study was conducted to identify genomic regions associated with four seed size traits (seed length, seed width, seed thickness, and 100-seed weight) in a panel of 195 AYB ...
    • Review of instrumental texture measurements as phenotypic tool to assess textural diversity of root, tuber and banana food products 

      Ayetigbo, O.; Arufe, S.; Kouassi, A.B.; Adinsi, L.; Adesokan, M.; Escobar, A.; Delgado, L.F.; Tanimola, A.; Oroniran, O.; Vepowo, C.K.; Nakitto, M.; Khakasa, E.; Chijioke, U.; Nowakunda, K.; Newilah, G.N.; Otegbayo, B.; Akissoe, N.H.; Lechaudel, M.; Tran, T.; Alamu, E.O.; Maziya-Dixon, B.; Mestres, C.; Dufour, D. (2023-10)
      Roots, tubers and bananas (RTBs) contribute immensely to food security and livelihoods in sub-Saharan Africa, Asia and Latin America. The adoption of RTB genotypes in these regions relies on the interplay among agronomic traits, ease of processing and consumer preference. In breeding RTBs, until recently, little attention was accorded key textural traits preferred by consumers. Moreover, a lack of standard, discriminant, repeatable protocols that can be used to measure the textural traits deter ...
    • Aquaculture governance: five engagement arenas for sustainability transformation 

      Partelow, S.; Asif, F.; Bene, C.; Bush, S.; Manlosa, A.O.; Nagel, B.; Schluter, A.; Chadag, V.M.; Choudhury, A.; Cole, S.M.; Cottrell, R.S.; Gelcich, S.; Gentry, R.; Gephart, J.A.; Glaser, M.; Johnson, T.R.; Jonell, M.; Krause, G.; Kunzmann, A.; Kuhnhold, H.; Little, D.C.; Marschke, M.J.; Mizuta, D.D.; Paramita, A.O.; Pin, N.; Salayo, N.D.; Stentiford, G.D.; Stoll, J.; Troell, M.; Turchini, G.M. (2023-12)
      A greater focus on governance is needed to facilitate effective and substantive progress toward sustainability transformations in the aquaculture sector. Concerted governance efforts can help move the sector beyond fragmented technical questions associated with intensification and expansion, social and environmental impacts, and toward system-based approaches that address interconnected sustainability issues. Through a review and expert-elicitation process, we identify five engagement arenas to ...
    • Start codon-targeted marker evaluation of genetic relationship and population structure in southern Nigerian fluted pumpkin (Telfairia occidentalis Hook F.) collection 

      Aworunse, O.S.; Popoola, J.O.; Paliwal, R.; Obembe, O.O. (2023)
      Fluted pumpkin (Telfairia occidentalis Hook F.) is an underutilized indigenous leafy vegetable with enormous prospects for food security in sub-Saharan Africa. However, relatively little is known about genetic relationships and population structure in the species. In this study, 32 landraces of fluted pumpkin collected across three southern geographical regions in Nigeria were assessed for genetic diversity and population structure using 8 start codon-targeted (SCoT) makers. The polymorphic ...
    • Evidence for metabolite composition underlying consumer preference in sub-Saharan African Musa spp. 

      Drapal, M.; Amah, D.; Uwimana, B.; Brown, A.; Swennen, R.; Fraser, P.D. (2024-03)
      Breeding programs for disease resistant bananas in Sub-Saharan Africa generated resistant bananas, which did not meet fruit quality characteristics preferred by consumers. The present study aimed to establish chemotypes underlying preferred cooking bananas of Matooke, Mchare and plantain and less preferred Mbidde bananas, used for beer brewing. The metabolite data of Mbidde showed higher levels of metabolites associated with sour, sweet, and astringent taste; as well as different textural properties ...
    • Association mapping of candidate genes associated with iron and zinc content in rice (Oryza sativa L.) grains 

      Bukomarhe, C.B.; Kimwemwe, P.K.; Githiri, S.M.; Mamati, E.G.; Kimani, W.; Mutai, C.; Nganga, F.; Dontsop-Nguezet, P.; Mignouna, J.; Civava, R.M.; Fofana, M. (2023-09)
      Micronutrient deficiencies, particularly of iron (Fe) and zinc (Zn), in the diet contribute to health issues and hidden hunger. Enhancing the Fe and Zn content in globally staple food crops like rice is necessary to address food malnutrition. A Genome-Wide Association Study (GWAS) was conducted using 85 diverse rice accessions from the Democratic Republic of Congo (DRC) to identify genomic regions associated with grain Fe and Zn content. The Fe content ranged from 0.95 to 8.68 mg/100 g on a dry ...
    • Inferential and behavioral implications of measurement error in agricultural data 

      Abay, K.A.; Assfaw Wossen, T.; Abate, G.T.; Stevenson, J.R.; Michelson, H.; Barrett, C.B. (2023-10)
      An evolving literature evaluates the inferential and behavioral implications of measurement error (ME) in agricultural data. We synthesize findings on the nature and sources of ME and potential remedies. We provide practical guidance for choosing among alternative approaches for detecting, obviating, or correcting for alternative sources of ME, as these have different behavioral and inferential implications. Some ME biases statistical inference and thus may require econometric correction. Other ...
    • A novel approach for assessing technical grade and quality of Lambda-cyhalothrin and acetamiprid in insecticides used in agricultural systems by HPLC technique in southern Benin 

      Tossou, E.; Tepa-Yotto, G.; Tchigossou, G.; Soglo, M.F.; Mbokou-Foukmeniok, S.; Bougna-Tchoumi, H.H.; Bokonon-Ganta, A.H.; Tamo, M.; Djouaka, R.F. (2023)
      In Benin, synthetic insecticides are the main pest control option used by farmers to protect and enhance their production. However, failures to control the target pests are often observed after application and may be related to agricultural practices or insecticide quality. The present work was designed to assess a rapid, simple, and reliable analytical method for detecting and quantifying the most commonly used insecticides (λ-cyhalothrin and acetamiprid) in Benin. The analytical standard technical ...
    • Quantification of endogenous phytochemicals and determination of their exogenous effects in somatic embryogenesis pathways of white and water yams 

      Ossai, C.; Balogun, M.; Maroya, N.; Sonibare, M.A. (2023-02)
      In vitro propagation of yam via organogenesis is constrained with low multiplication rate. Somatic embryogenesis (SE) has shown rapid multiplication potentials in yam. However, it has not been adopted by practical seed system scenarios due to genotype specificity. Reports have shown that SE is regulated endogenously by phytochemicals, but this is yet to be elucidated for yam. This study identified, quantified endogenous, and evaluated effects of exogenous application of selected identified ...
    • Pasting properties of high-quality cassava flour of some selected improved cassava varieties in Tanzania for baking 

      Abubakar, M.; Wasswa, P.; Masumba, E.; Kulembeka, H.; Mkamilo, G.; Kanju, E.; Mrema, E.; Abincha, W.; Edema, R.; Tukamuhabwa, P.; Kayondo, S.I.; Ongom, P. (2023-01-31)
      Partial substituting wheat with high-quality cassava flour (HQCF) in bread making would be economically beneficial in Tanzania. However, cassava varieties with the best pasting quality for this use are unknown. In addition, the appropriate time of harvesting the varieties to attain the best pasting quality is also unknown. This study, therefore, aimed at identifying the most appropriate cassava varieties and their appropriate harvesting time that could be used for production of HQCF for baking ...
    • Genome-edited foods 

      Tuncel, A.; Pan, C.; Sprink, T.; Wilhelm, R.; Barrangou, R.; Li, L.; Shih, P. M.; Varshney, R. K.; Tripathi, L.; Van Eck, J.; Mandadi, K.; Qi, Y. (2023-10-04)
      Genome editing can transform agriculture and shape the future of food by improving crop yields and animal productivity, which in turn can help to achieve food security for the growing world population. CRISPR–Cas-based technologies are powerful gene editing tools that are applied to various food products. In this Review, we discuss the applications of CRISPR–Cas aimed at increasing the nutritional value of crops through macronutrient engineering and biofortification or the reduction of the amount ...
    • Exploring genetic variability, heritability, and trait correlations in gari and eba quality from diverse cassava varieties in Nigeria 

      Aghogho, C.I.; Kayondo, S.I.; Maziya-Dixon, B.; Eleblu, S.J.; Asante, I.; Offei, S.K.; Parkes, E.; Smith, A.I.; Adesokan, M.; Abioye, R.; Chijioke, U.; Ogunpaimo, K.; Kulakow, P.; Egesi, C.; Dufour, D.; Rabbi, I.Y. (2023-07)
      BACKGROUND Gari (especially in Nigeria) is an important West African food product made from cassava. It is an affordable, precooked, dry, easy to prepare and store food product. Eba is a stiff dough produced by reconstituting gari in hot water. Gari and eba quality is an important driver of varietal acceptance by farmers, processors, and consumers. RESULTS This study characterized the genetic variability, heritability, and correlations among quality-related traits of fresh roots, gari, and eba. ...
    • Potential of cavalcade, Centrosema pascuorum, leaves for controlling Meloidogyne javanica and quantification of active phytochemicals 

      Beesa, N.; Chinnasri, B.; Sasnarukkit, A.; Dethoup, T.; Jindapunnapat, K.; Kiriga, A. W.; Saikai, K.; Haukeland, S.; Coyne, D. (2023-08-15)
      The legume cavalcade, Centrosema pascuorum, is used extensively as a cover crop and as a component of conservation agriculture systems. It is also an attractive rotation or cover crop for the management of root-knot nematodes (RKN; Meloidogyne spp.) as it is a non-host. RKN are persistent pests that are well known to be difficult to control. However, the mechanisms governing the non-host status of cavalcade is unknown. The current study established that cavalcade leaves are toxic to RKN as either ...
    • Current status of molecular tools development for cowpea [Vigna unguiculata (L.) Walp.] improvement 

      Sodo, A.M.I.; Fatokun, C.; Olasanmi, B.; Boukar, O. (2023-08)
      Cowpea [Vigna unguiculata (L.) Walp.] is a popular tropical grain legume which is widely produced and consumed in sub-Saharan Africa (SSA). The grains are rich in dietary protein for human while the haulm is high quality fodder for livestock particularly ruminants. Compared with many other crops cowpea is a laggard in development, evaluation and deployment of different molecular markers for use in genetics and breeding. Application of DNA-based markers is of considerable significance to crop ...
    • Varietal impact on women's labour, workload and related drudgery in processing root, tuber and banana crops. Focus on cassava in sub-Saharan Africa 

      Bouniol, A.; Ceballos, H.; Bello, A. A.; Teeken, B.; Olaosebikan, O.; Owoade, D.; Agbona, A .; Fotso Kuate, A.; Madu, T.; Okoye, B.; Ofoeze, M.; Nwafor, S.; Onyemauwa, N.; Adinsi, L.; Forsythe, L.; Dufour, D. (2023-08-22)
      Roots, tubers and cooking bananas are bulky and highly perishable. In Africa, except for yams, their consumption is mainly after transport, peeling and cooking in the form of boiled pieces or dough, a few days after harvest. To stabilize, better preserve the products and, in the case of cassava, release toxic cyanogenic glucosides, a range of intermediate products have been developed, mainly for cassava, related to fermentation and drying after numerous processing operations. This review highlights, ...