Now showing items 81-100 of 5266

    • Influence of adding edible termite flour to Ogi powder: its chemical and phytochemical composition 

      Awoyale, W.; Fadeni, F.R.; Maziya-Dixon, B. (2024-07-05)
      Ogi, a traditional staple food made from submerged fermented cereal grains, is high in carbohydrates and low in protein. It is essential to conduct this research because termite flour (TF) addition may affect other quality aspects in addition to increasing protein content. Using 100 g of Ogi powder as a control sample, the chemical and phytochemical content of Ogi developed from blends of Ogi powder (OP) (50–100 g) with termite flour (TF) (10–50 g) was assessed using standard methods. The average ...
    • Effect of combined use of supplementary irrigation, manure and P fertilization on grain yield and profitability of soybean in northern Nigeria 

      Bebeley, J.F.; Kamara, A.; Jibrin, J.M.; Tofa, A.; Solomon, R.; Kamai, N. (2024-04-14)
      Declining soil fertility particularly phosphorus deficiency, low organic carbon, moisture stress and high cost of input are factors limiting soybean yield in the Nigeria savanna. Supplementary irrigation, nutrient application and inoculation with Bradyrhizobium could increase the grain yield of soybean. We evaluated the effects of Rhizobia inoculant, phosphorus fertilization, manure, and supplementary irrigation on the nodulation and productivity of a tropical soybean variety in two locations in ...
    • Genetic diversity of cassava landraces and documentation of farmer's knowledge in Lamu, Kenya 

      Mutoni, C.K.; Nzuve, F.M.; Miano, D.; Kivuva, B.M.; Obare, I.J.; Shah, T.; Ferguson, M. (2024)
      To develop a strategy for improvement of cassava (Manihot esculenta Crantz) productivity for climate change preparedness in Lamu County, Kenya, it was important to understand which cultivars farmers are growing. Landraces should be collected and conserved prior to replacement by improved cultivars to avoid erosion of genetic resources and associated farmer knowledge. In this study, 58 samples of landraces were collected from five administrative wards in Lamu County. These were SNP genotyped using ...
    • Enhancing youth's retention in potato farming enterprise through consortium agribusiness models in Tanzania 

      Ngozi, S.; Feleke, S. (2024-05)
      The future of African youth probably lies in agriculture; however, this can be realized by making agriculture both profitable and attractive to young people. The importance of increasing youth involvement in agricultural value chains is primarily to sustain food production and secondly to reduce youth unemployment. Youth can be involved in various segments of agriculture and food value chains including production, post-harvest handling, distribution, value addition, and marketing. In Tanzania, ...
    • Precision genetics tools for genetic improvement of banana 

      Tripathi, J.; Ntui, V.O.; Tripathi, L. (2024-06)
      Banana is an important food security crop for millions of people in the tropics but it faces challenges from diseases and pests. Traditional breeding methods have limitations, prompting the exploration of precision genetic tools like genetic modification and genome editing. Extensive efforts using transgenic approaches have been made to develop improved banana varieties with resistance to banana Xanthomonas wilt, Fusarium wilt, and nematodes. However, these efforts should be extended for other ...
    • Collection of cassava landraces and associated farmers' knowledge, genetic diversity and viral incidence assessment in western Kenya 

      Obare, I.J.; Charimbu, M.K.; Mafurah, J.; Mutoni, C.K.; Woyengo, V.W.; Shah, T.; Ferguson, M. (2024)
      Cassava is a crucial food crop in the western region of Kenya, producing 60% of the country’s production. It is mainly grown by small-scale farmers for subsistence use, with any surplus being sold. Many cassava landraces from the western region have been seriously affected by two viral diseases, cassava mosaic disease (CMD) and cassava brown streak disease (CBSD) but have not been conserved, together with associated farmer knowledge, in national or international germplasm repositories. This study ...
    • Genomic prediction of the performance of tropical doubled haploid maize mines under artificial Striga hermonthica (Del.) Benth. infestation 

      Kimutai, J.J.C.; Makumbi, D.; Burgueno, J.; Perez-Rodriguez, P.; Crossa, J.; Gowda, M.; Menkir, A.; Pacheco, A.; Ifie, B.E.; Tongoona, P.; Danquah, E.; Prasanna, B.M. (2024)
      Striga hermonthica (Del.) Benth., a parasitic weed, causes substantial yield losses in maize production in sub-Saharan Africa (SSA). Breeding for Striga resistance in maize is constrained by limited genetic diversity for Striga resistance within the elite germplasm and phenotyping capacity under artificial Striga infestation. Genomics-enabled approaches have the potential to accelerate identification of Striga resistant lines for hybrid development. The objectives of this study were to evaluate ...
    • Effect of packaging and storage conditions on the pasting and functional properties of pretreated yellow-fleshed cassava flour 

      Ekeledo, E.; Abass, A.; Muller, J. (2024-08-14)
      Cassava is highly susceptible to post harvest physiological deterioration which makes it necessary to initiate processing so as to extend the shelf life. In order to improve and enhance the nutritional characteristics of the processed cassava flour, this research was carried out so as to evaluate the adequate packaging materials and storage conditions necessary for safe storage and good flour quality. Pasting properties of food/flour is an indication of the different applicability of starch-based ...
    • Agroecology and resilience of smallholder food security: a systematic review 

      Dagunga, G.; Ayamga, M.; Laube, W.; Ansah, I.G.K.; Kornher, L.; Kotu, B.H. (2023)
      Multiple covariate shocks such as the COVID-19 pandemic, the Russia–Ukraine conflict, and pre-existing climate shocks pose serious threats to smallholder livelihoods. The cascading effects of these multiple shocks, including rising prices of fertilizers and food imports, have rekindled interest in the call for a policy shift toward agroecology. Agroecology in this study is defined as a set of practices based on ecological principles of diversity, synergy, and nutrient cycling of agroecosystems, ...
    • Research agenda for holistically assessing agricultural strategies for human micronutrient deficiencies in east and southern Africa 

      Grabowski, P.; Slater, D.; Gichohi-Wainaina, W.N.; Kihara, J.; Chikowo, R.; Mwangwela, A.; Chimwala, D.; Bekunda, M. (2024-10-01)
      Context Human micronutrient deficiencies in sub-Saharan Africa are connected through complex pathways to soils and how soils are managed. Interventions aiming directly at nutrient consumption, such as supplements and food fortification, have direct impacts but are often limited in their reach and require continuous support. In contrast, less direct changes, such as agricultural diversification and agronomic biofortification, are complicated by a wide array of factors that can limit progress toward ...
    • Use of time series normalized difference vegetation index (NDVI) to monitor fall armyworm (Spodoptera frugiperda) damage on maize production systems in Africa 

      Adan, M.; Tonnang, H.E.; Greve, K.; Borgemeister, C.; Goergen, G. (2023-03-08)
      Fall armyworm (FAW) Spodoptera frugiperda (J.E. Smith), damage was monitored at a regional scale using time series data in Western and Southern African countries. The study employed the normalized difference vegetation index (NDVI) computed from Landsat 8 imagery using the Google Earth Engine (GEE) using image composites for the years 2013 to 2020 for the study areas. The index was then reclassified based on the NDVI threshold values into low, sparse, moderate, and dense classes. FAW prevalence ...
    • Registration of provitamin A-enriched tropical maize inbred lines 

      Menkir, A.; Meseka, S.; Gedil, M.; Ojo, T.; Mengesha Abera, W. (2024)
      Vitamin A deficiency and its associated disorders are pervasive in sub-Saharan Africa (SSA) including many middle- and low-income countries across the world. Provitamin A-enriched maize (Zea mays L.) inbred lines with desirable agronomic and adaptive traits have been developed and used to generate and commercialize maize varieties with medium to high levels of provitamin A in a few countries to curb vitamin A deficiency. Nonetheless, these inbred lines have not been made widely available to the ...
    • Genetic diversity and population structure in banana (Musa spp.) breeding germplasm 

      Akech, V.; Bengtsson, T.; Ortiz, R.; Swennen, R.; Uwimana, B.; Ferreira, C.F.; Amah, D.; Amorim, E.P.; Blisset, E.; Van den Houwe, I.; Arinaitwe, I.K.; Nice, L.; Bwesigye, P.; Tanksley, S.; Uma, S.; Suthanthiram, B.; Mduma, H.; Brown, A. (2024)
      Bananas (Musa spp.) are one of the most highly consumed fruits globally, grown in the tropical and sub-tropical regions. We evaluated 856 Musa accessions from the breeding programs of the International Institute of Tropical Agriculture of Nigeria, Tanzania, and Uganda; the National Agricultural Research Organization of Uganda; the Brazilian Agricultural Research Corporation (Embrapa); and the National Research Centre for Banana of India. Accessions from the in vitro gene bank at the International ...
    • DArTseq-based genome-wide SNP markers reveal limited genetic diversity and highly structured population in assembled West African cowpea germplasm 

      Koura, A.A.; Kena, A.W.; Annor, B.; Adejumobi, I.I.; Maina, F.; Sayadi Maazou, A.R.; Razakou, I.B.Y.; Attamah, P.; Kusi, F.; Boukar, O.; Akromah, R. (2024-03)
      The potential of cowpea (Vigna unguiculata [L] Walp) to contribute to food security and livelihood sustenance of sub-Sahara Africans is constantly threatened by many biotic and abiotic stresses that are aggravated by climate change. To address these threats, cowpea breeding programs in the subregion prioritize climate-resilience traits and resistance to biotic stresses. However, before successful trait discovery and implementation, it is essential to characterize diversity and population structure ...
    • Phenotypic diversity within Ugandan yam (Dioscorea species) germplasm collection 

      Adjei, E.A.; Esuma, E.; Alicai, T.; Bhattacharjee, R.; Dramadri, I.; Agaba, R.; Chamba, E.; Odong, T.L. (2022-12-19)
      A proper understanding of the diversity of the available germplasm is an initial step for the genetic improvement of a crop through breeding. However, there is limited information on the diversity of Uganda’s yam germplasm. The study sought to characterize the diversity of yam germplasm utilized for decades in Uganda together with germplasm recently introduced from West Africa using phenotypic traits. A germplasm collection of 291 genotypes was characterized using 28 phenotypic traits. Data were ...
    • Population structure and genetic diversity of rice (Oryza sativa L.) germplasm from the Democratic Republic of Congo (DRC) using DArTseq-Derived Single Nucleotide Polymorphism (SNP) 

      Kimwemwe, P.K.; Bukomarhe, C.B.; Mamati, E.G.; Githiri, S.M.; Civava, R.M.; Mignouna, J.; Kimani, W.; Fofana, M. (2023-07-19)
      Understanding the genetic diversity and population structure of rice is crucial for breeding programs, conservation efforts, and the development of sustainable agricultural practices. This study aimed to assess the genetic diversity and population structure of 94 rice (Oryza sativa L.) genotypes from the Democratic Republic of Congo using a set of 8389 high-quality DArTseq-based single nucleotide polymorphism (SNP) markers. The average polymorphic information content (PIC) of the markers was 0.25. ...
    • New technologies provide innovative opportunities to enhance understanding of major virus diseases threatening global food security 

      Kreuze, J.; Cuellar, W.; Kumar, P.L.; Boddupalli, P.M.; Omondi, A.B. (2023-09)
      Plant viruses pose a continuous and serious threat to crop production worldwide, and globalization and climate change are exacerbating the establishment and rapid spread of new viruses. Simultaneously, developments in genome sequencing technology, nucleic acid amplification methods, and epidemiological modeling are providing plant health specialists with unprecedented opportunities to confront these major threats to the food security and livelihoods of millions of resource-constrained smallholders. ...
    • Assessing milk products quality, safety, and influencing factors along the dairy value chain in eastern Democratic Republic of the Congo 

      Bacigale, S.B.; Ayagirwe, R.; Mutwedu, V.B.; Mugumaarhahama, Y.; Mugisho, J.Z.; Nziku, Z.; Fofana, M.; Udomkun, P.; Mignouna, J. (2023-11-01)
      Dairying is one of the new promising economic sectors in eastern Democratic Republic of Congo (DRC), but still not explored enough to ensure consumers' safety. This study aimed to assess the health risks and nutritional profile of milk products along the value chain in South-Kivu and Tanganyika provinces. A total of 288 milk actors, including 160 producers, 35 collectors and 93 vendors, were concerned for interview and milk samples collection. A total of 302 milk samples (159 raw, 44 pasteurized, ...
    • Molecular and phenotypic profiling of white Guinea yam (Dioscorea rotundata) breeding lines 

      Norman, P.E.; Asfaw, A.; Agre, P.A.; Danquah, A.; Tongoona, P.B.; Danquah, E.Y.; Asiedu, R. (2023-11)
      Phenotypic and genotypic profiling helps identify genotypes with suitable and complementary traits for genetic improvement in crops. A total of 32 traits were assessed in 36 genotypes of white Guinea yam established in a 6 × 6 triple lattice design. The objective was to evaluate an array of plant traits that define the genetic merits of breeding lines for yam improvement. Different analytical tools were used to identify and prioritize relevant traits defining the genetic merits of breeding lines ...
    • Natural and modified food hydrocolloids as gluten replacement in baked foods: functional benefits 

      Irondi, E.A.; Imam, Y.T.; Ajani, E.O.; Alamu, E.O. (2023-12)
      Gluten, the protein responsible for the superior viscoelastic properties of refined wheat flour dough over gluten-free cereals, causes celiac disease in people susceptible to gluten-allergy. Moreover, the sustainability of using wheat flour in baked foods is threatened by its high cost, especially in countries that depend on imported wheat for their bakery industry. Research has shown that hydrocolloids serve as gluten replacements in baked foods, in response to these challenges. Food hydrocolloids ...