Working Document Series Open Access Development of improved scald tolerant barley varieties with superior enduse (malt) and nutritional quality for dry land areas of the northern Ethiopia Asmud. Bjornstad · R. Edema · Abay. Feiten Barley is an important cash crop for resource-poor farmers in Tigray region of northern Ethiopian where options are very limited, and barley is often the only possible crop. Biotic stresses plus a harsh environment have contributed to low … RUF-34600 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Determining appropriate mode and rate of applying lime to improve maize production in acid soils of north Kakamega and Siaya districts, Kenya J.K. Kiplagat · J.R. Okalebo · C.O. Othieno Increasing soil acidity is a major cause of low soil fertility in western Kenya where about 57,670 hectares is acidic. While liming can increase soil pH, the most appropriate method of application needs to be determined. This study aimed a… RUF-34599 2010 CC BY 4.0 8 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 Testing the efficacy of artificial microRNAs to control cassava brown streak disease T. Alicai · Y. Baguma · Claude M. Fauquet · Settumba B. Mukasa +4 more Cassava brown streak disease (CBSD) is a major constraint to cassava production in East Africa. It is caused by at least two single stranded (+) RNA viruses (CBSV and CBSUV). To date, only a few genetic sources of resistance to the disease… RUF-34597 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Comparative effects of Minjingu phosphate rock and triple super phosphate on residual P in an Ultisol A.M. Kalala · J.M.R. Semoka A glasshouse experiment was conducted at Sokoine University of Agriculture to compare the effects of Minjingu Phosphate Rock (MPR) and Triple Super Phosphate (TSP) on Residual Phosphorus in an Ultisol. The soil was collected after seven ye… RUF-34593 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Parametric pedotransfer functions for predicting soil water retention in a Ngerengere Subcatchment, Morogoro -Tanzania Kitalyi. Aichi · J. Dietz · J. Kaingo · H. Mahoo +1 more The soil water retention-release characteristics (SWRC) are essential to understand water redistribution in agricultural systems. However, direct measurements of SWRC are constrained by costs, scarcity of equipment and time. Pedotransfer f… RUF-34592 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Development of a hot pepper root rot and wilt disease management strategy through genetic resistance, chemical application and proper choice of rotational crops E. Awori · S. Nkalubo · P. Tukamuhabwa · S. Tumwekwase +1 more This study seeks to contribute to increased productivity of hot pepper (Capsicum chinense) by incorporating an integrated pest management (IPM) package for root rot/wilt disease (Phytophthora capsici). Pathogen host diversity will be deter… RUF-34591 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Comparative effect of farmyard manure, cowpea residues and NPK Fertilizer on maize grain yield in Morogoro G. Habonayo · C.L. Rweyemamu · J.M.R. Semoka Optimal combinations of organic and inorganic fertilizers can give rise to increased maize yields in nutrient depleted soils. In this study, we assessed the effectiveness of cowpea residues and combinations of inorganic fertilizers on maiz… RUF-34587 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Farmers’ perceptions on maize ear rots and the prospects for breeding farmer preferred varieties in Uganda G. Asea · P. Gibson · P. Okori · L. Tembo Maize ear rots are a major constraint to maize production globally, and yield loses of up to 70% have been reported in Uganda. Developing varieties resistant to ear rots is a practical strategy that provides better insurance for the small … RUF-34586 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Biological N2 fixation of three Acacia senegal varieties in the drylands of Kenya using 15N natural abundance method E.W. Githae A study is on-going in Kenya to identify Acacia senegal varieties with high symbiotic biological N2 fixation capacity. Balanites aegyptica, a non-legume species, has been included for comparison. Variety senegal has so far shown the highes… RUF-34584 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Effect of selected arbuscular mycorrhiza fungi on the growth of Calliandra calothyrsus and Sorghum bicolor in eastern Uganda E. Adipala · G. Eilu · C.L. Kizza · J.G.M. Majaliwa +2 more Successful consistent revegetation of drastically disturbed areas throughout the world has been achieved using biological “tools” including mycorrhizal fungus inoculated tree seeds, seedlings, native shrubs, and grass species. However, the… RUF-34583 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Studies into slow rusting resistance among selected wheat lines F.M. Nzuve · D. Singh · G. Tusiime Wheat is an important staple crop in East Africa whose consumption outweighs its production partly due to the emergence of a virulent strain of Puccinia graminis fsp tritici, strain ug99 that cause stem rust disease. A study was carried ou… RUF-34573 2010 CC BY 4.0 7 Sep 2015
Working Document Series Open Access Biotic constraints to banana production in Eastern and Central Provinces of Kenya R. Gathu · J. Mbaka · R. Muasya · Maina Mwangi +1 more Banana is an important crop whose production faces major challenges, especially pests and diseases. A banana pests survey was carried out in Eastern and Central Provinces of Kenya. Results showed Fusarium wilt as the most widespread diseas… RUF-34571 2010 CC BY 4.0 7 Sep 2015
Working Document Series Open Access Strategy for improving bush bean production on a phosphorus fixing Andosol with aquic moisture regime A. Cyamweshi Rusanganwa · J.S. Tenywa In Uganda, bean is a food security and income sourcing crop, particularly for the rural poor. The highlands of southwestern Uganda are major producers and consumers of the crop. The arable soils in the highlands bordering Rwanda and DR Con… RUF-34570 2010 CC BY 4.0 7 Sep 2015
Working Document Series Open Access Evaluation of the soil fertility status in relation to crop nutritive quality in the selected physiographic units of Mbeya Region, Tanzania N. Amuri · J.M. Anthony · L. Mhoro · B.M. Msanya +1 more This study is assessing soil fertility status in Mbeya region of Tanzania in terms of adequacy for crop growth and crop nutrient status in terms of human nutrition. It will examine levels of macro and micronutrient. The study has just been… RUF-34565 2010 CC BY 4.0 7 Sep 2015
Working Document Series Open Access Effect of drip irrigation system and fertigation on growth, yield and quality of banana cv. Grand Nain (Musa AAA) B. A. Ahmed · M.I. Ihsan · A.A. Mohammed Banana cv. Grand Nain is a newly released cultivar in Sudan with high yield potential and less sensitivity to cool temperature. There is a high demand for exporting this cultivar which will replace the widely grown banana cv. Dawarf Cavend… RUF-34560 2010 CC BY 4.0 7 Sep 2015
Working Document Series Open Access Characterization of a diverse set of maize germplasm for resistance to infection by Aspergillus flavus and accumulation of aflatoxin G. Asea · D.B. Kwemoi · P. Okori Sources of resistance to A. flavus have been identified elsewhere but no such materials are currently available for use by the maize improvement program in Uganda. The goal of this study was to initiate breeding for resistance to the fungu… RUF-34558 2010 CC BY 4.0 4 Sep 2015
Working Document Series Open Access Participatory development, testing and validation of concepts and technologies for site-specific detection and control of plant parasitic nematodes infecting tomatoes in Mwea, Kenya J.K. Birgen · V. Gathaara · F.W. Kariuki · G.M. Kariuki Tomato production in Kenya has been a lucrative business for smallholder farmers who cannot afford huge capital to invest in other cash crops. It is a major source of household incomes and has created employment that has resulted in improv… RUF-34557 2010 CC BY 4.0 4 Sep 2015
Working Document Series Open Access Building Capacity for Food Security in Africa: Underlying issues, challenges and opportunities Sylvia Chindime · A. Kaaya · M. Karuhanga · C. Ntwali +1 more Africa’s development will depend largely on three key factors; political stability, a vibrant agricultural sector and a pool of skilled, innovative and entrepreneural graduates able to spur innovations. This paper outlines the rationale fo… RUF-34554 2010 CC BY 4.0 4 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 The reaction of maize genotypes to maize streak virus disease in central Uganda B. Bua · B. M. Chelimo Documented evidence indicates that maize is production is constrained by a number of a biotic and biotic stresses including Maize streak virus disease (MSVD). Therefore, a study was conducted to assess the reaction of 3 maize genotypes to … RUF-34550 2010 CC BY 4.0 4 Sep 2015
Working Document Series Open Access The link between seasonal climatic variability and poverty: A case study of pastoral and agro-pastoral communities in Baringo District, Kenya D.M. Nyariki · V.O. Wasonga · A.M. Yazan Elhadi Poverty remains rampant in the dry districts of Kenya so that it has now become an important item on Kenya’s development agenda. The dry districts of Kenya receive low amounts of rainfall, which is also erratic. These regions are predomina… RUF-34545 2010 CC BY 4.0 27 Aug 2015
Working Document Series Open Access Impact of landuse change on soil carbon stocks and livelihoods of communities on Mt. Elgon region, Uganda S. Balaba Tumwebaze · M. Buyinza · C. M. Nantumbwe · M. M. Tenywa There is inadequate knowledge on the form of soil organic carbon (SOC) pools and fluxes that are affected by land use change. Hence, there is a need to understand how soil organic carbon is affected by land use change and how these impacts… RUF-34544 2010 CC BY 4.0 26 Aug 2015
Working Document Series Open Access Modelling the potential impact of climate change on sorghum and cowpea production in semi-arid areas of Kenya using the agricultural production systems simulator (APSIM) J.M. Githinji · G. Kironchi · J. P. Mbuvi · R.N. Onwonga Managing crop production risks associated with inter-annual climate variability and climate change has received insignificant attention in the semi-arid areas of Kenya. Against this backdrop, the potential impact of climate change on sorgh… RUF-34537 2010 CC BY 4.0 25 Aug 2015
Working Document Series Open Access Developing a broad soybean germplasm base and durable resistance to soybean rust disease in Uganda R. Kawuki · P. Tukamuhabwa · G. Tusiime Soybean rust, Phakopsora pachyrhizi is a major threat to soybean production world-wide. In Uganda breeding for soybean rust resistance has taken priority over other objectives since the first disease rust outbreak in 1996. Three resistant … RUF-34535 2010 CC BY 4.0 25 Aug 2015
