Working Document Series Open Access Market access and its effect on citrus fruit production in Uganda E. Chilembwe · G. Elepu · H. Kongai · M.B. Kwapata +1 more Sustaining success in productivity-based agricultural growth depends on expansion of market opportunities. However, limited attention has been directed towards marketing strategies of Uganda’s horticultural produce which is one of the fast… RUF-34922 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Analysing the agricultural science and technology innovation systems: A case study of the banana sub-sector in Uganda Margaret Kabahenda · M. Kapiriri Bananas are an important staple food crop and livelihood base for about 16 million people in Uganda. Its survival over the years can be traced to key factors and actors, who through learning, adjusting and innovations have sustained banana… RUF-34864 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Unveiling opportunities of farming trees in Malawi: Economic impact of integrating trees on smallholder agriculture F. Mzotah Thapasila Gondwe The aim of this research is to raise and provide empirical evidence for promoting tree farming in Malawi. It addresses questions such as: Is tree farming a viable system for smallscale farmers in Malawi? Trees have multiple products for su… RUF-34860 2010 CC BY 4.0 14 Sep 2015
Working Document Series Open Access Assessment of changes in natural resources: A participatory approach M. W. Baaru · C.K.K. Gachene · V. Gathaara · J. P. Mbuvi +1 more This study analyzed changes in natural resources in Machakos District of Kenya using participatory approaches. The results show that natural resources have decreased since the ranch became a settlement scheme. Natural forests decreased, va… RUF-34824 2010 CC BY 4.0 11 Sep 2015
Working Document Series Open Access Production of disease-free papaya planting materials of known sex for commercial fruit production A.W. Kihurani · M. Mwaniki · M.M. Waiganjo · F.K.R. Wanzala Papaya (Carica papaya L.) is a medium sized fruit crop with a potential to produce fruits throughout the year. The ripe fruits, which are very rich in vitamins A and C, are popularly used for dessert or processed into jam or wine. Due to i… RUF-34756 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Evaluation of Chilli pepper genotypes for yield and reaction to field diseases V. Nsabiyera · M. Ochwo-Ssemakula · P. Sseruwagi The performance of 25 chilli (16 exotic and 9 local) genotypes for yield and associated traits and reaction to field diseases was assessed at the National Crops Resources Research Institute (NaCRRI)- Namulonge from June-November, 2009. Tot… RUF-34753 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Effect of pruning on yield and quality of selected indeterminate tomato lines C. Mbonihankuye In this study, we investigated the effect of prunning intensity on tomato fruit yield of five introductions and one variety. Tomato line significantly affected all tomato yield components in addition to marketable and non-marketable yield.… RUF-34744 2010 CC BY 4.0 10 Sep 2015
Journal articles Open Access Perforation-mediated modified atmosphere packaging of fresh and minimally processed produce: A review J. Caleb Oluwafemi · Linus Opara Umezuruike · Hussein Zaharan The overwhelming global demand by consumers for convenience and fresh quality fruit and vegetables, heightens the need for appropriate postharvest technologies. In order to maintain freshness quality attributes, extend the shelf life of fr… RUF-34741 2015 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Growth and physiological changes of tomato as influenced by soil moisture levels J.N. Aguyoh · C. Imana · A. Opiyo Tomato (Lycopersicon esculentum Mill.), as in most fruit vegetables, is often exposed to stresses either imposed by other organisms (biotic) or arising from imbalance of environmental factors (abiotic). Water management is a key factor tha… RUF-34720 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Test of AquaCrop model in simulating biomass and yield of water deficient and irrigated barley Kebede Afewerk · Alemie Araya With the current water shortage in Eastern Africa, improving crop water use is vital especially in the arid and semi-arid regions of Ethiopia. To understand the response of barley (Hordeum vulgare) to water and to simulate the biomass and … RUF-34709 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Response of tomato to coffee pulp and phosphate rock composts applied to a phosphorus deficient Ultisol J.P. Mrema · M. J. Shitindi A glasshouse experiment was conducted using tomato (Lycopersicon esculentum M.) var. Carl J to investigate the effect of composting coffee pulp with Minjingu phosphate rock (MPR) on phosphorus availability, plant growth and yield response … RUF-34686 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Studies on the etiology, epidemiology and management of dieback disease of passion fruit in Kenya R. Gathu · N. Kori · J. Mbaka · M. Mwangi +1 more Passion fruit (Passiflora spp.) is an important cash crop in Kenya. In the recent past, diseases have increasingly reduced its production with yield losses ranging from 50 – 100%. Dieback is a recently emerged disease that is highly virule… RUF-34598 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Detection and screening of yellow and sweet calabash passion fruit for resistance to woodiness disease in Uganda G. Ddamulira · R. Edema · S. Musaana · M.K.N. Ochwo-Ssemakula +1 more In Uganda passion fruit woodiness disease (PWD) damages passion fruit, causing yield losses of 60-100%. This study aimed at detecting and screening yellow and sweet calabash passion fruit for resistance to PWD. Four viruses, namely, Cowpea… RUF-34552 2010 CC BY 4.0 4 Sep 2015
Working Document Series Open Access Biotic constraints to passion fruit production in central and eastern provinces of Kenya R. Gathu · N. Kori · J. Mbaka · Maina Mwangi +1 more Passion fruit is an important crop in Kenya for income generation. However, passion fruit production faces major challenges due to pests and diseases that have led to yield losses of 50-100%. To support development of effective integrated … RUF-34463 2010 CC BY 4.0 21 Aug 2015
Working Document Series Open Access Agronomic performance of potato population B3C2 genotypes in southwestern Uganda P. Gibson · R. Kakuhenzire · T. Ndacyayisenga · G. Tusiime Thirteen potato genotypes known as population B3C2 were evaluated for yield and resistance to late blight. Assessment of late blight severity started at the onset of the disease symptoms; disease severity rating was based on visual symptom… RUF-34431 2010 CC BY 4.0 21 Aug 2015
Working Document Series Open Access The effect of timing of earthing up on the performance of four Bambara groundnut landrace cultivars in the Mutasa District of Manicaland Province in Zimbabwe Z.A. Chiteka · S. Mhungu An experiment was carried out at two sites to investigate the effect of timing of earthing up on the yield of four landrace cultivars of Bambara groundut (Vigna subterranean [L.] Verdc.) cultivars in Zimbabwe during the 2006/2007 season. T… RUF-34411 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Analysis of multipurpose uses and management of Zizphus spina-christi (L.) desf. in semi-arid Ethiopia: Implications for food security Feyssa Debela Hunde · J.T. Njoka · M.M. Nyangito · Asfaw Zemede Quantitative ethnobotanical study of Ziziphus spina-christi was undertaken in six areas of east Shewa, Ethiopia. Both structured questionnaire and focus-group interviews were conducted with about 200 households. Arable land cultivation, an… RUF-34380 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Collection and documentation of Papaya germplasm in Kenya. G. O. Asudi · E. M. Ateka · A. B. Nyende · F. K. Ombwara +2 more Papaya (Carica papaya L.) is one of the major fruit crops of Kenya and the tropics in general. It shows considerable phenotypic variation in morphological and horticultural traits that can be utilized in genetic improvement. The objective … RUF-34358 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Assessment of the fruit fly, Batrocera invadens, pest status and the establishment of the parasitoid, Fopius arisanus in Mozambique G. Albano · D. Cugala · L. Santos Asian fruit flies in the genus Bactrocera (Diptera: Tephritidae) are regarded as some of the most destructive pests of fruits and vegetables worldwide and rank high on quarantine lists worldwide. Losses result from direct feeding damage, d… RUF-34342 2010 CC BY 4.0 20 Aug 2015
Policy Briefs Open Access Research briefs for the Fourth Graduate Research Grants Call RUF-34334 2015 CC BY 4.0 19 Aug 2015
Policy Briefs Open Access Research briefs for the Third Graduate Research Grants Call RUF-34332 2015 CC BY 4.0 18 Aug 2015
Working Document Series Open Access Seasonal rainfall variability, drought characterisation and efficacy of interpolation techniques: Case of Kenya’s central highlands M. Oscar Kisaka · F.S. Mairura · M. Mucheru-Muna · D.N. Mugendi +2 more Drier parts Eastern Kenya, endure persistent crop failure and declining agricultural productivity which have been attributed, in part, to high temperatures, prolonged dry-spells and particularly erratic rainfall. Understanding spatial-temp… RUF-34241 2014 CC BY 4.0 17 Aug 2015
Working Document Series Open Access Trend in climate variation in Karamoja Sub-region, northern eastern Uganda D. Aleper · A. Egeru · L. MacOpiyo · M.G.J. Majaliwa +1 more This study focused at determining the spatial and temporal rainfall and temperature characteristics in Karamoja with a view of establishing the intensity of climate variability. The study utilized historical data (1947-1976) and NOAA reana… RUF-34237 2014 CC BY 4.0 17 Aug 2015
Working Document Series Open Access Comparison of quality attributes of mango fruits produced from two contrasting agro-ecological zones of Kenya J. Ambuko · L. Ouma · W.O. Owino · S. Shibairo Mango (Mangifera indica) is a tropical fruit adapted to a wide range of agro-ecological conditions. In Kenya, mango fruits are produced across various agro-ecological zones (AEZs); from sub-humid to semi-arid. The diverse production condit… RUF-34096 2014 CC BY 4.0 13 Aug 2015
Working Document Series Open Access Pesticide use for management of aphids and viral diseases in passion fruit J. Karungi · M. Ochwo-Ssemakula · A. Olango · P. Sseruwagi Passionfruit viral pathogens limit passionfruit production and are non-persistently transmitted by aphid vectors, the diseases can reduce orchard life span to only a year resulting to 100% yield loss. 50-100% loss due to biotic stresses ha… RUF-34086 2014 CC BY 4.0 13 Aug 2015
