Working Document Series Open Access Land cover and use changes in the rangelands of Central-Uganda: Impacts on soil quality and pasture productivity C.K.K. Gachene · G. Kironchi · D. Mpairwe · E. Zziwa This study determined the patterns and magnitudes of land cover and use changes, their driving factors and impacts on soil quality and pasture productivity in Nakasongola district. Satellite data (1970 - 2009), surveys, soil and pasture sa… RUF-34706 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Effect of soil copper accumulation on proliferation and survival of rhizobia G.P. Msumali · H. Tindwa Two strains of the fast-growing bean rhizobia- PV1 and PV2 and two others of the slow-growing cowpea and soybean bradyrhizobia- CP1 and GM8 respectively, were used to test their in vitro proliferation and in vivo survival. Known amounts of… RUF-34704 2010 CC BY 4.0 10 Sep 2015
Theses & Dissertations Open Access Effects of phosphorus deficiency on secondary metabolites and distribution of African nightshade in Siaya and Kisii counties, Kenya J. Ogembo Oyaro African Indigenous Vegetables form an integral part of the Kenyan diets, among the most commonly consumed being the African nightshade. These vegetables contain important phenolics that have medicinal values and good health attributes. The… RUF-34701 2015 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Effect of land use and cover change on carbon stock and water quality of River Atari in Kapchorwa-Uganda F. Kansiime · J.G.M. Majaliwa · J. Sirike The objective of this study was to examine the trend in landuse/ cover change around Atari micro-catchment and determine the effect of these changes on carbon stock and Atari river water quality. An Earth Resources Data Analysis System (ER… RUF-34698 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Evaluation of water productivity for maize under drip irrigation J.J. Kashaigili · H. Mahoo · F.R. Silungwe, F.R. A drip system operating under deficit irrigation was used to evaluate water productivity (WP) of TMV-1 maize variety in Morogoro, Tanzania. A block was divided into four sub-blocks; and each randomly assigned with deficit treatment (T1, T2… RUF-34693 2010 CC BY 4.0 10 Sep 2015
Working Document Series Open Access Identification of drought related and drought responsive genes in cassava Harvey. Jagger · E.B. Kizito · Ferguson. Morag · L. Turyagyenda Conventional cassava breeding has yielded a lot of progress for many traits including pest and disease resistance and high yields but little progress has been made with respect to drought tolerance. It is believed that molecular breeding o… RUF-34689 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Characterisation of genetic diversity among Sudanese sorghum accessions using molecular markers and phenotypic characteristics M. A. Abdelbagi · Suliman. Sufian Sorghum is an important staple food grain crop for the millions of people living in the semi-arid tropics in Asia, Africa and Latin America. The present study examined phenotypic and genotypic characteristics of 95 Sudanese sorghum accessi… RUF-34687 2010 CC BY 4.0 9 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 Evaluation of physiological and morphological traits conferring drought tolerance in cowpea D. Lungu · K. Simango A field study was carried at Gwebi VTC to determine relationships among the morpho-physiological traits associated with drought tolerance in cowpea. Fifteen genotypes were planted in RCBD with three replications under two moisture environm… RUF-34685 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Enhancing Callus induction and embrogenic cell suspension development in East African highland banana G. Arinaitwe · P. Gibson · A. Kiggundu · S.B. Mukasa +3 more Improvement of banana using conventional breeding methods is very difficult due to its biology. Genetic transformation is a novel alternative approach for crop improvement. Transformation of EA-AAA bananas has, however, been limited by dif… RUF-34682 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Regeneration dynamics of woody species in degraded natural forests in western Kenya Wellington Ekaya · J. Kinyamario · J. Otuoma Deforestation has become rampant in many areas in Kenya due to pressure on land resulting from human population increase. Efforts to rehabilitate areas that have been deforested have had little success due to the limited knowledge of veget… RUF-34678 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Effects of lime and phosphorus fertilizer on maize performance in acid soils of western Kenya J.R. Okalebo · V.S. Omenyo · C.O. Othieno Western Kenya continues to experience food insecurity due to increasing soil acidity and consequent phosphorus deficiencies with 0.9 million hectares of land having pH < 5.5. Liming is one of the interventions recommended to ameliorate … RUF-34675 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Strengthening researcher-extension-farmer participation in soil fertility restoration for sustainable crop production in western Kenya E. Adipala · B. Amar · L. Didier · S.O. Gudu +14 more Food insecurity in sub-Saharan Africa (SSA) results mainly from common and prolonged droughts, fertility depleted soils, poor economies and insignificant researcher-extension-farmer contacts to demonstrate technologies. The soils are predo… RUF-34673 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Inheritance of resistance to Fusarium root rot in three common bean genotypes P. Gibson · S.T. Nkalubo · P.O. Ongom · P. Rubaihayo Fusarium solani f. sp phaseoli (FSP) is an important disease in Uganda causing in some cases 100% yield losses in beans. The study established the nature of inheritance to FSP resistance in genotypes RWR 719, NABE 14 and NABE 13. A 5x5 ful… RUF-34670 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Improving biological nitrogen fixation (BNF) by groundnuts grown in acid soils through amendment with calcitic and dolomitic limestones R. Merckx · J.K. Ogega · J.R. Okalebo · D.K. Okello +5 more Groundnut (Arachis hypogeal L.) is an oil crop legume capable of symbiotic nitrogen fixation. Soil acidity is a major limitation to symbiotic nitrogen fixation. Acid soils are widespread in Western Kenya and Eastern Uganda where groundnut … RUF-34659 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Analysis of drought tolerance in selected upland rice genotypes in Uganda Y. Baguma · J. Lamo · B.S. Namazzi · P. Okori Breeding for drought tolerance requires a clear understanding of the mode of gene action for this trait. To understand the action of drought tolerance genes in upland rice varieties in Uganda, a study was carried out to establish the gener… RUF-34652 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Enhancing water use efficiency of cassava and sorghum based cropping systems in drylands G. Kironchi · R. Mulebeke · M. M. Tenywa Soil moisture flow characteristics, infiltration and storage in the root zone determine the overall availability and use efficiency of water in crop production. This study is evaluating the effects of cropping systems and tillage managemen… RUF-34646 2010 CC BY 4.0 9 Sep 2015
Working Document Series Open Access Improving soil nutrients and water management to increase crop yield for enhanced livelihoods of small scale farmers in semi-arid eastern Kenya B.O. Danga · K.B. Mmolawa Food insecurity in Kenya is on the increase unless appropriate measures are taken. This is because nearly 80% of the land is arid to semi-arid and therefore not favorable for crop production using the current methods of production. The iss… RUF-34636 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Constraints of rehabilitating degraded semi-arid lands of Kenya using indigenous perennial grasses W.N. Ekaya · K.Z. Mganga · W.M. Muiru · N.K.R. Musimba +3 more Land degradation which among others include loss of vegetation is rampant in Kenya, destroying both the fragile arid and semiarid lands and the non-arid areas. Efforts to rehabilitate semiarid areas by re-vegetation has often failed. This … RUF-34628 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Evaluating the macropropagation efficiency of banana varieties preferred by farmers in Eastern and Central Kenya N. Gitonga · M.R. Kasyoka · N. Kori · R. Muasya +1 more Kenyan farmers are threatened by overreliance on few crops whose yields are reduced by adverse climatic changes. Bananas are more resilient and produce year round, making it a more suitable crop. To increase banana production, farmers shou… RUF-34627 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Inheritance of resistance to bacterial blight and implication for rice improvement in Uganda G. Asea · R. Edema · P. Gibson · I. Habarurema +1 more Bacterial blight caused by Xanthomonas oryzae pv.oryzae, is a destructive disease of rice worldwide. Resistant varieties are the best option to avert the disease. Thirty resistance genes identified face a wide genetic diversity exhibited b… RUF-34618 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Farmer - managed trials for evaluation of rhizatech and legumefix in Bungoma district Kenya C. Majengo · W. Ngetich · J.R. Okalebo · C.O. Othieno The nitrogen reserve of agricultural soils must be replenished periodically in order to maintain an adequate level for crop production. This replacement of soil nitrogen is generally accomplished by the addition of fertilizers or as produc… RUF-34615 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Assessment of soil and landform characteristics for implementation of conservation agriculture in West Usambara Mountains, Lushoto District, Tanzania D. Kimaro · L.A. Kyaruzi · H.B. Msita Developing strategies that promote conservation agriculture in the West Usambara Mountains in Tanzania poses a particular challenge. This research used empirical and qualitative method to assess soil and landform characteristics in relatio… RUF-34613 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Phosphate sorption by andisols and ultisols, and its implication on phosphorus bioavailability in the wet tropics of Tanzania E. Kisetu · J.P. Mrema Phosphorus (P) sorption and desorption behaviour of Andisols of Siha - Kilimajaro and Ultisols of Magadu -Morogoro, Tanzania was studied in pot experiments. This was to facilitate development of P management strategies for enhanced maize p… RUF-34606 2010 CC BY 4.0 8 Sep 2015
Working Document Series Open Access Assessing factors influencing types, rate of application and timing of fertilizer use among small-scale farmers of western Kenya M.K. Kifuko-Koech · A.K. Kipkoech · K.W Ndungu · A.O. Nekesa +1 more Many soil fertility amelioration technologies exist in western Kenya, but the factors that influence the adoption, and the economic returns of these technologies needs to be assessed. In this study, the value cost ratios (VCR) of five diff… RUF-34603 2010 CC BY 4.0 8 Sep 2015
