IITA Bibliography System: Recent submissions

Now showing items 701-720 of 8125

    • Antagonistic and plant growth promotion of rhizobacteria against Phytophthora colocasiae in taro 

      Kelbessa, B.G.; Ghadamgahi, F.; Kumar, P.L.; Ortiz, R.; Whisson, S.C.; Bhattacharjee, R.; Vetukuri, R.R. (2022)
      Taro leaf blight caused by Phytophthora colocasiae adversely affects the growth and yield of taro. The management of this disease depends heavily on synthetic fungicides. These compounds, however, pose potential hazards to human health and the environment. The present study aimed to investigate an alternative approach for plant growth promotion and disease control by evaluating seven different bacterial strains (viz., Serratia plymuthica, S412; S. plymuthica, S414; S. plymuthica, AS13; S. ...

    • Diversity and taxonomy of the fern genus Vandenboschia Copel. (Hymenophyllaceae, Polypodiidae) in the Afro-Malagasy region and description of a new species 

      Dubuisson, J.Y.; Boucheron-Dubuisson, E.; Le Pechon, T.; Bausero, P.; Droissart, V.; Deblauwe, V.; Ebihara, A.; Hennequin, S.; Rouhan, G. (2022)
      Vandenboschia radicans (supposedly Neotropical and African), V. speciosa (supposedly European and Macaronesian) and V. gigantea (supposedly from western Indian Ocean) are morphologically close species and often confused in collections and in floras. Moreover, the status of African populations is still strongly debated. We undertook to combine morphological, morphometrics and molecular phylogenetic analyses, on these three species, by also including the Neotropical V. collariata, morphologically ...

    • Sustainable agricultural intensification: a handbook for practitioners in east and southern Africa 

      Bekunda, M.; Odhong, J.; Hoeschle-Zeledon, I. (CAB International, 2022-05)
      This book provides an insight into the background, lessons learned, and the methodology of facilitating the application of best-bet/best-fit agricultural technologies to smallholder farms in East and Southern Africa (ESA). All technologies highlighted within this book, except those on livestock feeding, were trialed and demonstrated in farmers' fields over an eight-year period [2012-2020] as part of the Feed the Future/USAID funded research-for-development Africa RISING ESA Project and supported ...

    • Combining multiple technologies: integrated soil fertility management 

      Bekunda, M.; Chikowo, R.; Claessens, L.; Hoeschle-Zeledon, I.; Kihara, J.; Kizito, F.; Okori, P.; Sognigbé, N.; Thierfelder, C. (CAB International, 2022-05)
      This chapter shows how Integrated Soil Fertility Management (ISFM) can be combined and integrated further at farm and landscape levels to improve farming system performance. ISFM is an example of a system-wide technology. It is a set of soil fertility management practices, including use of industrial fertilizer, organic inputs, and improved crop varieties, combined with knowledge on how to adapt the practices to local conditions. Its benefits include agronomic efficiency, enhanced productivity, ...

    • Taking technologies to a greater scale 

      Sseguya, H.; Chikowo, R.; Chimonyo, V.; Chipungu, F.; Groot, J.C.J.; Muthoni, F.K.; Ngulu, F.; Thierfelder, C. (CAB International, 2022-05)
      This chapter presents a definition of 'scaling' and outlines the key elements for success based on the experiences gained from Africa RISING research and dissemination in East and Southern Africa (ESA). Three examples are presented: (a) research and development partnerships; (b) community based scaling through seed systems; and (c) outdoor advertising for orange-fleshed sweet potato. It presents experiences and lessons learned from using these approaches to transfer and scale the technologies.

    • Improved technologies for reducing post-harvest losses 

      Mutungi, C.; Abass, A.; Fischer, G.; Kotu, B.H. (CAB International, 2022-05-10)
      This chapter outlines several post-harvest loss reduction technologies validated by the Africa RISING program that will improve the efficacy of drying, threshing, and storage operations, and gives evidence of their potential impact. The chapter also provides evidence on the cumulative benefits of combining all three technologies.

    • Management of soil fertility through application of fertilizers 

      Kihara, J.; Bekunda, M.; Chimonyo, V.; Kimaro, A.A.; Kotu, B.H.; Lyimo, S.; Mhango, W. (CAB International, 2022-05)
      This chapter presents technologies for replacing the nutrients lost from cropped fields with external fertilizer sources in a manner that minimizes the consequences of too little or too much application. The technology of using industrial fertilizers, organic fertilizers, and application of farmyard manure and compost alone or in combination with industrial fertilizers are discussed in detail.

    • Genotype X environment interaction and stability analysis in upland rice (Oryza sativa L.) varieties in Ethiopia 

      Abebe, D.; Mohammed, W.; Tesfaye, A. (2022)
      Determination of the genotype x environment interaction (GEI) and stability of upland rice varieties for grain yield provides the basis to identify high-yielding and stable upland rice varieties across different environments and to delineate and identify rice mega environments in Ethiopia. Twenty rice varieties were laid out in a randomized complete block design with three replications and evaluated across six locations that represent the major rice growing agro-ecologies in the country. The ...

    • Evaluation of 93 accessions of African yam bean (Sphenostylis stenocarpa) grown in Ethiopia for physical, nutritional, antinutritional, and cooking properties 

      Shitta, N.S.; Abebe, A.T.; Oselebe, H.O.; Edemodu, A.; Alamu, E.O.; Abberton, M.; Maziya-Dixon, B.; Adesokan, M.; Fenta, B.; Abtew, W.G. (2022)
      African yam bean has immense food and nutrition potential and is resilient to adverse environmental conditions. Despite its potential, the crop is underutilized, which could be attributed to seed hardness (requiring about 6–24 hours of cooking time); and the abundance of antinutrient factors (tannin, phytate, and oxalate). This study evaluated the physical (seed hardness, cooking time) and chemical compositions (crude protein, tannin, phytate, and oxalate) of 93 AYB accessions grown in Ethiopia. ...

    • Tolerance to soil acidity of soybean (Glycine max L.) genotypes under field conditions Southwestern Ethiopia 

      Bedassa, T.A.; Abebe, A.T.; Tolessa, A.R. (2022)
      Soil acidity with associated low nutrient availability is one of the major constraints to soybean production in southwestern Ethiopia. Integrated use of lime and acid-tolerant crops is believed to reduce soil acidity and improve crop production. The experiment was conducted in the field condition of Mettu, southwestern Ethiopia during the 2017/18 main cropping season. The experiment comprised fifteen soybean genotypes and two soil amendment (lime and unlimed) treatments arranged in a split-plot ...

    • Validation of KASP-SNP markers in cassava germplasm for marker-assisted selection of increased carotenoid content and dry matter content 

      Ige, A.D.; Olasanmi, B.; Bauchet, G.J.; Kayondo, S.I.; Mbanjo, E.; Uwugiaren, R.; Motomura-Wages, S.; Norton, J.; Egesi, C.; Parkes, E.; Kulakow, P.; Ceballos, H.; Dieng, I.; Rabbi, I.Y. (2022)
      Provitamin A biofortification and increased dry matter content are important breeding targets in cassava improvement programs worldwide. Biofortified varieties contribute to the alleviation of provitamin A deficiency, a leading cause of preventable blindness common among pre-school children and pregnant women in developing countries particularly Africa. Dry matter content is a major component of dry yield and thus underlies overall variety performance and acceptability by growers, processors, and ...

    • Predicting starch content in cassava fresh roots using near-infrared spectroscopy 

      Mbanjo, E.; Hershberger, J.M.; Peteti, P.; Agbona, A.; Ikpan, A.; Ogunpaimo, K.; Kayondo, S.I.; Abioye, R.S.; Nafiu, K.; Alamu, E.O.; Adesokan, M.; Maziya-Dixon, B.; Parkes, E.; Kulakow, P.; Gore, M.A.; Egesi, C.; Rabbi, I.Y. (2022)
      The cassava starch market is promising in sub-Saharan Africa and increasing rapidly due to the numerous uses of starch in food industries. More accurate, high-throughput, and cost-effective phenotyping approaches could hasten the development of cassava varieties with high starch content to meet the growing market demand. This study investigated the effectiveness of a pocket-sized SCiO™ molecular sensor (SCiO) (740−1070 nm) to predict starch content in freshly ground cassava roots. A set of 344 ...

    • Breeding schemes: what are they, how to formalize them, and how to improve them? 

      Covarrubias-Pazaran, G.; Gebeyehu, Z.; Gemenet, D.; Werner, C.; Labroo, M.; Sirak, S.; Coaldrake, P.; Rabbi, I.Y.; Kayondo, S.I.; Parkes, E.; Kanju, E.; Mbanjo, E.; Agbona, A.; Kulakow, P.; Quinn, M.; Debaene, J. (2022)
      Formalized breeding schemes are a key component of breeding program design and a gateway to conducting plant breeding as a quantitative process. Unfortunately, breeding schemes are rarely defined, expressed in a quantifiable format, or stored in a database. Furthermore, the continuous review and improvement of breeding schemes is not routinely conducted in many breeding programs. Given the rapid development of novel breeding methodologies, it is important to adopt a philosophy of continuous ...

    • Compositional nutrient diagnosis (CND) and associated yield predictions in maize: a case study in the northern Guinea savanna of Nigeria 

      Shehu, B.M.; Garba, I.I.; Jibrin, J.M.; Kamara, A.; Adam, A.M.; Craufurd, P.; Aliyu, K.T.; Rurinda, J.; Merckx, R. (2022)
      Developing optimal strategies for nutrient management of soils and crops at a larger scale requires an understanding of nutrient limitations and imbalances. The availability of extensive data (n = 1,781) from 2-yr nutrient omission trials in the most suitable agroecological zone for maize (Zea mays L.) in Nigeria (i.e., the northern Guinea savanna) provides an opportunity to assess nutrient limitations and imbalances using the concept of multi-ratio compositional nutrient diagnosis (CND). We also ...

    • Low-cost, handheld near-infrared spectroscopy for root dry matter content prediction in cassava 

      Hershberger, J.M.; Mbanjo, E.; Peteti, P.; Ikpan, A.; Ogunpaimo, K.; Nafiu, K.; Rabbi, I.Y.; Gore, M.A. (2022)
      Over 800 million people across the tropics rely on cassava (Manihot esculenta Crantz) as a major source of calories. While the root dry matter content (RDMC) of this starchy root crop is important for both producers and consumers, characterization of RDMC by traditional methods is time-consuming and laborious for breeding programs. Alternate phenotyping methods have been proposed but lack the accuracy, cost, or speed ultimately needed for cassava breeding programs. For this reason, we investigated ...

    • Invasiveness, biology, ecology, and management of the fall armyworm, Spodoptera frugiperda 

      Kenis, M.; Benelli, A.; Biondi, A.; Calatayud, P.A.; Day, R.; Desneux, N.; Harrison, R.D.; Kriticos, D.J.; Rwomushana, I.; Van den Berg, J.; Verheggen, F.; Zhang, Y.; Agboyi, L.K.; Ahissou, R.B.; Ba, M.N.; Bernal, J.; de Freitas Bueno, A.; Carriere, Y.; Carvalho, G.A.; Chen, X.X.; Cicero, L.; du Plessis, H.; Early, R.; Fallet, P.; Fiaboe, K.; Firake, D.M.; Goergen, G.; Groot, A.T.; Guedes, R.N.C.; Gupta, A.; Hu, G.; Huang, F.N.; Jaber, L.R.; Malo, E.A.; McCarthy, C.B.; Meagher Jr, R.L.; Mohamed, S.; Mota-Sanchez, D.; Nagoshi, R.N.; Negre, N.; Niassy, S.; Ota, N.; Nyamukondiwa, C.; Omoto, C.; Palli, S.R.; Pavela, R.; Ramirez-Romero, R.; Rojas, J.C.; Subramanian, S.; Tabashnik, B.E.; Tay, W.T.; Virla, E.G.; Wang, S.; Williams, T.; Zhang, L.S.; Zhang, L.; Wu, K. (2022)
      The fall armyworm (FAW), Spodoptera frugiperda (JE Smith, 1797), is a serious pest of several crops, particularly maize and other cereals. It has long been known as a pest in the Americas and has invaded most of Africa and parts of the Middle East, Asia, and Australia in the last six years. Its new status as an invasive species causing serious damage in many regions worldwide has highlighted the need for better understanding and has generated much research. In this article, we provide a comprehensive ...

    • Mitigating aflatoxin in Rwanda 

      Herrman, T.J.; Hoffmann, V.; Kamaraba, I.; Konlambigue, M. (2021)
      On August 18th, 2021, the International Growth Centre and the Rwandan Ministry of Agriculture organised a webinar under the theme Market Driven Strategies for Mitigating Aflatoxin in Rwanda. The webinar highlighted Rwanda's progress towards mitigating aflatoxin and showcased innovative approaches used by neighbouring countries. The event was an opportunity for stakeholders to discuss Rwanda’s key challenges in post-harvest management and assess the evidence on approaches that have (not) worked in ...

    • Plantain hybrids for the humid forest agroecology of Central Africa – diseases and pests load, fruit yield and farmers perception 

      Lienou, J.; Ngatat, S.; Nanga, S.N.; Doumtsop Fotio, A.R.P.; Abang, A.F.; Fotso Kuate, A.; Fiaboe, K.; Fonbah, C.; Ajebesone, F.N.; Njukwe, E.; Tenkouano, A.; Hanna, R. (2022)
      Plantain is one of the major staples contributing to food security and income generation in West and Central Africa. Local cultivars in Cameroon are susceptible to pests and diseases causing severe losses in plantain production. This study aimed at evaluating the agronomic performance and producer’s perception of plantain hybrids in the humid forest of Cameroon. Field trials were established in a completely randomized block design with eight genotypes and three replicates. Data on pest and disease ...

    • Leaving no one behind: a photovoice case study on vulnerability and wellbeing of children heading households in two informal settlements in Nairobi 

      Karuga, R.; Steege, R.; Njoroge, I.; Liani, M.; Georgi, N.W.; Otiso, L.; Muturi, N.; Okoth, L.A.; Theobald, S.; Tolhurst, R. (2022)
      Children heading households (CHH) in urban informal settlements face specific vulnerabilities shaped by limitations on their opportunities and capabilities within the context of urban inequities, which affect their wellbeing. We implemented photovoice research with CHHs to explore the intersections between their vulnerabilities and the social and environmental context of Nairobi’s informal settlements. We enrolled and trained four CHHs living in two urban informal settlements—Korogocho and ...

    • Water use efficiency of maize (Zea mays L.) crop under selected soil and water conservation practices along the slope gradient in Ruzizi watershed, eastern D.R. Congo 

      Bagula, E.; Majaliwa, J.M.; Basamba, T.A.; Mondo, J.; Vanlauwe, B.; Gabiri, G.; Tumuhairwe, J.B.; Mushagalusa, G.; Musinguzi, P.; Akello, S.; Egeru, A.; Tenywa, M. (2022)
      Maize (Zea mays L.) productivity is constrained by water shortages in the predominantly rainfed agriculture of the tropical semi-arid Ruzizi Plain, in the eastern Democratic Republic of Congo (DRC). The region is characterized by a high seasonal and inter-annual rainfall variability and a frequent occurrence of consecutive dry days within growing seasons. Consequently, planning water utilization in rainfed agriculture has become complex, as appropriate soil water conservation (SWC) practices are ...