Browsing by Author "Matovu, Moses"

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    Capacity Building in Agronomic Practices, Waxing and Relative Humidity Storage Technologies for Shelf-life Extension of Fresh Cassava Roots
    (CGIAR Research Program, 2016) Nyamutoka, Pamela; Wanda, Kelly; Matovu, Moses; Aceng, Sharon; Muyinza, Harriet; Kaliisa, Robert; Menya, Geoffrey; Nuwamanya, Ephraim; Nyakaisiki, Elizabeth; Nanyondo, Rose; Abass, Adebayo
    Cassava is an important source of food and income in Uganda. Consumption of cassava has been increasing especially in the urban areas. Total consumption of fresh cassava in 2013 was estimated to be 1.32 MT per annum (RTB-ENDURE - Cassava Sub-Project scoping study, 2014). Market demand for fresh cassava in 2013 was estimated to be 309,528 MT per annum and was projected to increase to 387,074 MT in 2018, signifying a 25% increase. New market segments for fresh cassava roots have been emerging for both the niche and mass markets. Fresh cassava was found to be consumed in various forms. According to findings from the RTB-ENDURE Market Study (2015) high-end restaurants had introduced cassava recipes while fried cassava chips were a delicacy in road-side food catering services, a new phenomenon. Further, the study revealed that the most preferred consumption form was in fried form (37% of the study respondents), followed by boiled (35% of the study respondents) and steamed in banana leaves (25% of the study respondents). Cassava enjoys a unique position as a convenient food that is easy and fast to prepare. It is in recognition of this fact that cassava has been selected as one of the ten priority crops to assist Uganda transform its agricultural sector through provision of household incomes, employment and food security. However, despite this growth in demand, both utilization of and income derived from marketing of fresh cassava are being hindered by the rapid postharvest physiological deterioration (PPD) of the roots. Cassava suffers spoilage within two to three days of harvest. The implication is that it cannot be marketed over a long time and distance thereby reducing incomes to growers and traders, leading to less investments and hence low productivity. To address this challenge, the RTB-ENDURE Cassava Sub-Project also known as “Extending the Shelf life of Fresh Cassava Roots for Increased Incomes and Postharvest Loss Reduction” aimed at introducing, testing, validating and assessing the efficacy of two technologies for increasing the shelf-life of fresh cassava roots, and thereby assisting to increase the value to growers, traders and consumers along the entire value chain. These technologies included high relative humidity storage and waxing. Both relative humidity storage and waxing of fresh cassava roots are in commercial use elsewhere. However, their applicability and feasibility in Uganda was unknown since these technologies were new. Therefore, the approach used in RTB-ENDURE Cassava Sub-project involved knowledge sharing between the Ugandan research team and its counterpart at CIAT in Colombia, one of the countries where these technologies are being commercially adopted. CIAT has substantial experience in conducting research on PPD of cassava and on how to tackle the issue of the rapid deterioration of the roots by use of suitable varieties, agronomic practices and pre-harvest techniques such as pruning. CIAT scientists and value chain actors in Colombia trained the Ugandan research team in various aspects of high relative humidity storage and waxing, including varietal selection, PPD scoring, and the agronomic and pre-harvest techniques that reduce PPD. The project team conducted a scoping study and later a detailed market assessment, carried out on-station research on varietal selection (based on PPD susceptibility) and validation of the technologies for shelf-life extension, and established two pilot pack houses in western Uganda. These included one pack house in Kyenjojo district to test a farmer operated business model and another one that was established in Kabarole district to test a trader operated business model. Thereafter, the project built the capacities of both operators and their identified partners and potential suppliers to promote the adoption and adaptation of these shelf-life extension innovations. This report describes the capacity building process and activities that were done to enable the value chain actors adopt and adapt the pre-and post-harvest practices, and waxing and high relative humidity storage technologies in order to run a successful business enterprise.
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    Diversity in Nutrient Content and Consumer Preferences of Sensory Attributes of Peanut (Arachis hypogaea L.) Varieties in Ugandan Agroecosystems
    (Sustainability, 2021) Nankya, Rose; Mulumba, John W.; Lwandasa, Hannington; Matovu, Moses; Isabirye, Brian
    The cultivated peanut (Arachis hypogaea L.) is one of the most widely consumed legumes globally due to its nutrient content, taste, and affordability. Nutrient composition and consumer preference were determined for twenty local farmer (landrace) and commercial peanut varieties grown in the Nakaseke and Nakasongola districts of the central wooded savanna of Uganda through sensory and laboratory evaluation. Significant differences in nutrient content (p < 0.05) among peanut varieties were found within and across sites. A significant relationship between nutrient content and consumer preference for varieties within and across sites was also realized (Wilk’s lambda = 0.05, p = 0.00). The differences in nutrient content influenced key organoleptic characteristics, including taste, crunchiness, appearance, and soup aroma, which contributed to why consumers may prefer certain varieties to others. Gender differences in variety selection were significantly related to consumer preference for the crunchiness of roasted peanut varieties (F = 5.7, p = 0.016). The results imply that selecting different varieties of peanuts enables consumers to receive different nutrient amounts, while experiencing variety uniqueness. The promotion of peanut intraspecific diversity is crucial for improved nutrition, organoleptic appreciation and the livelihood of those engaged in peanut value chains, especially for the actors who specialize in different peanut products. The conservation of peanut diversity will ensure that the present and future generations benefit from the nutritional content and organoleptic enjoyment that is linked to unique peanut varieties.
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    Fusarium oxysporum Race 1 resistance and quality traits variations in apple banana germplasm
    (Journal of Plant Breeding and Crop Science, 2020) Buregyeya, Henry; Tumuhimbise, Robooni; Matovu, Moses; Tumwesigye, Kashub S.; Kubiriba, Jerome; Nowankunda, Kephas; Tushemereirwe, Wilberforce K.; Karamura, Deborah; Karamura, Eldad; Kityo, Robert M.; Rubaihayo, Patrick
    Musa species, AAB genome group, commonly known as Sukali Ndizi (SND) in Uganda, has attained a substantial commercial value in the recent past owing to its superior fruit quality attributes and better prices. However, its sustainable production and productivity are highly threatened by Fusarium wilt. To facilitate large scale area expansion of this important dessert banana, the present study was carried out to identify the near-ideotypic lines of best quality fruit traits that are also resistant to Fusarium wilt. Nineteen SND ecotypes were subsequently collected from nine key SND growing districts of Uganda and evaluated in the field and laboratory for different fruit quality attributes and response to Fusarium wilt. Results showed a wide diversity among SND ecotypes for fruit-quality traits (fruit pulp texture, flavor and taste). The ecotypes were, however, not significantly different (p > 0.05) for susceptibility to FOC race 1. Cluster analysis based on organoleptic and physio-chemical properties grouped the 19 ecotypes into two major-clusters, each of which was also split into two sub-clusters. Individual subclusters summarize levels of similarity amongst the different ecotypes. The study confirmed the presence of diversity in SND germplasm that could be exploited for SND genetic improvement of the crop through hybridization and selection.
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    Heterogeneity in Nutritional and Biochemical Composition of Cassava Varieties in Uganda
    (Journal of Agriculture and Sustainability, 2022) Matovu, Moses; Nankya, Rose; Lwandasa, Hannington; Isabirye, Brian E.; Santis, Paola De; Jarvis, Devra I.; Mulumba, John Wasswa
    Cassava (Manihot esculenta Crantz) has been prioritized by the New Partnership for African Development to spur development in Africa. However, the nutritional and biochemical composition of the cassava diversity has not been adequately assessed to inform the various user needs. Comparative analysis of macro, micro nutrients and biochemical composition of sixteen varieties of cassava in Uganda was undertaken following standard analytical techniques. Results showed significant differences in macro nutrients (p ≤0.000) except carbohydrate, starch and amylose contents. With the exception of Calcium and Iron, the varieties were significantly different (p ≤0.000) in micronutrient composition. The Cyanide and dry matter content were also significantly different (p ≤0.000) among the varieties. Overall, Mukibi, Juguja, Bao, Nigeria, ranked highest in dry matter, cyanide, macro and micronutrients content, respectively. Therefore varieties differ in nutritional and biochemical composition; information crucial in the development of new varieities and deployment of cassava diversity in various value chains.
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    Mode of inheritance for resistance to FOC Race 1 and fruit quality traits in Sukali Ndizi cultivar of Banana
    (Journal of Plant Breeding and Crop Science, 2021) Buregyeya, Henry; Tumwesigye, Kashub S.; Matovu, Moses; Nowakunda, Kephas; Namanya, Priver; Tushemereirwe, Wilberforce K.; Karamura, Eldad; Rubaihayo, Patrick
    Information on the genetic control of resistance to Fusarium oxysporum f.sp.cubense (FOC) race (1) and fruit quality traits in Sukali Ndizi cultivar of banana is key to its genetic improvement. The mode of resistance to Fusarium wilt in Sukali Ndizi was analyzed in 536 hybrids and 5 parental lines and quality attributes in 137 hybrids and two parental lines, grown in same environment. Fruit quality was assessed by physical measurements and fruit composition whereas resistance to Fusarium wilt was assessed by corm discoloration symptoms. All the assessed traits were quantitatively inherited. Flavor attributes, and pulp texture showed a predominance of additive inheritance with complementary gene action whereas total soluble solutes showed non-additive gene with dominant gene action. Fruit acidity had incomplete dominancy with the genetic model explained by both single gene and certain multiple genes. Resistance to Fusarium wilt showed dominant gene action and polygenic effects. Involvement of a few genes governing wilt resistance suggested the ease of breeding for this trait. Pedigree breeding method could be recommended for incorporating various traits in (cv. Sukali Ndizi) of banana.
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    Monitoring the Subolesin Vaccine Field Trial for Safer Control of Cattle Ticks Amidst Increasing Acaricide Resistance in Uganda
    (Vaccines, 2022) Kabi, Fredrick; Dhikusooka, Moses; Matovu, Moses; Mugerwa, Swidiq; Kasaija, Paul; Emudong, Patrick; Kirunda, Halid; Contreras, Marinela; Gortazar, Christian; De la Fuente, Jose
    A collaboration program was established between the group of Health and Biotechnology (SaBio) of the IREC Institute of Game and Wildlife Research (CSIC-UCLM-JCCM, Spain) and the National Agricultural Research Organization of Uganda (NARO) for the development of vaccines for the control of cattle ticks in Uganda. Controlled pen trials identified a tick protective antigen, Rhipicephalus appendiculatus Subolesin, and a cross-species-effective vaccine formulation. As the next step, a controlled vaccine field trial has been approved by Ugandan state regulatory authorities, the Uganda National Council for Science and Technology (UNCST) and the National Drug Authority (NDA), to evaluate the efficacy and effectiveness of the vaccine formulation for the control of cattle tick infestations under field conditions. The results of this trial may lead to the approval of the vaccine for application in Uganda to improve cattle health and production while reducing the use of acaricides.
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    Training Report: Capacity Building in Entrepreneurial and Business Skills for Operationalizing Fresh Cassava Roots Packhouse
    (The CGIAR Research Program on Roots, 2017) Nyamutoka, Pamela; Wanda, Kelly; Matovu, Moses; Kwagala, Innocent; Muyinza, Harriet; Kaliisa, Robert; Menya, Geoffrey; Nuwamanya, Ephraim; Nyakaisiki, Elizabeth; Nanyondo, Rose; Abass, Adebayo
    Cassava is an important source of food and income in Uganda. Consumption of cassava has been increasing especially in the urban areas. Market demand for fresh cassava in 2013 was estimated to be 309,528 MT per annum in 2013. It was projected to increase by 25% to 387,074 MT in 2018 (RTB-ENDURE-Cassava scoping study, 2014). New market segments for fresh cassava roots have been emerging for both niche and mass markets. Fresh cassava was found to be consumed in various forms. According to findings from the Market Study 2015 high-end restaurants had introduced cassava recipes. Fried cassava chips were a delicacy in road-side food catering services, a new phenomenon in urban areas. Further, analysis of respondent responses revealed that the most preferred consumption form was fried (37%), followed by boiled (35%) and steamed in banana leaves (25%). Cassava enjoys a unique position as a convenient food that is easy and fast to prepare. It is in recognition of this, among others, that cassava has been selected as one of the 10 priority crops with a high potential to transform the agricultural sector in Uganda through provision of household food security, incomes, and employment. . However, despite a growth in demand, both the utilization and income derived from marketing of fresh cassava roots are being hindered by the rapid postharvest physiological deterioration (PPD) that causes spoilage of cassava roots within two to three days of harvest. The implication is that it cannot be marketed over a long time and distance, thereby reducing incomes and food security to growers, consumers and traders. This in turn leads to less investments and hence low productivity.To address this challenge, the RTB-ENDURE Cassava sub-project also known as “Extending the Shelf life of Fresh Cassava Roots for Increased Incomes and Postharvest Loss Reduction” aimed at introducing, testing, validating the efficacy of two technologies for increasing the shelf-life of fresh cassava roots, and thereby assisting to increase the value to growers, traders and consumers along the entire value chain. These technologies included high relative humidity storage and waxing. This research also focused on investigating and establishing the business cases for the two technologies in Uganda since both technologies are in commercial use elsewhere but the commercial applicability and viability of the new technologies in Uganda was unknown. The next phase of the project, following on-station research and user validation therefore was to determine the commercial and institutional feasibility of these technologies in Uganda.In doing so, the project proposed to set up two packhouses in order to test their commercial viability. They included one packhouse managed by farmers and another managed by an entrepreneur. To facilitate the successful commercial operations of the packhouses, it was necessary to build the entrepreneurial and business skills of the operators. This report describes the capacity building process and activities that were done to enhance the business and entrepreneurial skills of packhouse operators.
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    Variation and Abundance of Resistant Starch in Selected Banana Cultivars in Uganda
    (Cross Ref, 2024-09) Kajubi, Ali; Baingana, Rhona; Matovu, Moses; Katwaza, Ronald; Kubiriba, Jerome; Namanya, Priver
    The physiochemical, structural, and molecular characteristics of starch influence its functional properties, thereby dictating its utilization. The study aimed to profile the properties and quantity of resistant starch (RS) from 15 different banana varieties, extracted using a combination of alkaline and enzyme treatments. Granular structure and molecular organization were analyzed using light microscopy, scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The physiochemical and functional properties were also investigated. RS content ranged from 49% to 80% without significant relationship to amylose (AM) (r = −0.1062). SEM revealed significant microarchitectural differences on the granules potentially affecting granule digestibility. FTIR and chemometrics identified differences in the crystalline peaks, yielding varying degrees of the molecular order of the RS polymers that aid in differentiating the RS sources. Despite similar solubility and swelling profiles, the pasting profiles varied across varieties, indicating high paste stability in hydrothermal processing. Clarity ranged from 43% to 93%, attributed to amylose leaching. This study highlights that RS from bananas varies in quantity, structure, and functionality, necessitating individualized approaches for processing and utilization.