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 Improving greengram production for nutritional diversification, income and food security in Uganda G. Elepu · J. Obuo · H. L. Talwana · N. Wanyera This project seeks options for improving greengram production and guidelines for promoting it as a crop for diversification of income and food security in Uganda. The project will analyze the greengram value chain system; identify the key … RUF-34456 2010 CC BY 4.0 21 Aug 2015
Working Document Series Open Access Analysis of oil quality and content from different Kenyan land races of Croton megalocarpus E. Kenya · J. Onchieku · E. Onyango Aroko The increasing industrialization and motorization of the world has led to a steep rise in demand of petroleum-based fuels. Today, fossil fuels constitute 80% of the primary energy consumed in the world, of which 58% alone is consumed by th… RUF-34449 2010 CC BY 4.0 21 Aug 2015
Working Document Series Open Access Yield response of different local and hybrid rice varieties to different ponding depths of water N. I. Kihupi · E. Mabvuto Nyirenda · A.K.P.R. Tarimo The combined increase in demand for food and scarcity of water worldwide necessitates saving water and increasing its productivity. This study determined varietal performance of four paddy cultivars - TXD306, TXD220, TXD88 and SUPA in term… RUF-34440 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 Linkages between crop residues, termite prevalence, crop lodging and subsequent crop yield under conservation agriculture in Zimbabwe E. F. Mutsamba · I. Nyagumbo Farmers believe that addition of residues to fields in conservation agriculture (CA) attract termites hence increase lodging, although they are beliefs that termites prefer feeding on dry matter and leave the crop. This study carried out i… RUF-34415 2010 CC BY 4.0 20 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 Combining ability among interspecific (G. hirsutum x G. barbadense) and mutation derived lines of cotton in fiber quality and agronomic traits N. Bbebe · D.M Lungu · B.M. Siamasonta Zambia’s cotton has had a very good reputation on the international market for a long time. In order to maintain this reputation, the cotton Development Trust of Zambia continues to evaluate germplasm for suitable parents. In this study, t… RUF-34409 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Influence of temperature on yield of carrots J. Allemann · G. M. Engelbrecht · N. A. Manosa This study evaluated the influence of temperature on yield and retinol content of two carrot cultivars. Both cultivars yielded higher at lower (10 °C) than higher temperature (18 °C), but retinol content was higher at 18 °C. RUF-34399 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Effect of varying Desmodium and maize harvesting regimes on their yields and growth attributes within the “Push- Pull” intercropping systems in Western Kenya Z. Khan · M. N. Koech · J.R. Okalebo · C.O. Othieno +3 more This study tested the hypothesis that inclusion of Desmodium spp. into maize cropping system under the push-pull technology enhanced crop growth and yield. Field trials were conducted in Siaya and Busia districts of western Kenya with the … RUF-34388 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Potential of hairy vetch (Vicia villosa Roth) to improve soil physical properties of sandy soils in central Zimbabwe D. Chinamo · F Mapanda · G. Nyamadzawo · M. Wuta Most farmers in the smallholder areas practice conventional tillage which results in soil loss of between 10-34 t ha-1 yr-1. Tillage also results in breakdown of macroaggregates into smaller aggregates as well as primary particles. Close p… RUF-34374 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Assessment of groundnut yield loss due to the groundnut leaf miner, Aproaerema modicella infestation in Mozambique M. Botao · D. Cugala · L. Santos · A. Sidumo +1 more The groundnut leaf miner, Aproaerema modicella Deventer (Lepidoptera: Gelechiidae), is an invasive alien Asian species in Mozambique. A. modicella was reported for the first time in 1998 in Uganda. In Mozambique, Groundnut leaf miner was f… RUF-34364 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access The effects of water stress on yield and water productivity of two newly released wheat varieties H. Sirelkhatim Ahmed · A. Amel Ali This experiment was conducted under Gezira condition,Wad Medani, latitude 14º 242 N, longitude 33º 292 E and with an elevation of 405 m above the sea level, during season (2008/2009). A split plot design with four replications and nine irr… RUF-34350 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Effects of chicken and cattle manure on wheat production and soil properties in the high terrace and Karu soils in River Nile State in the Sudan Hassan Khalid Ali · Ali Alkhazin Ali Yousif This study was conducted at Hudeiba Research farm on karu and high terrace soils for two consecutive seasons (2008/09 and 2009/10). Organic manures are traditionally used for supplying plant nutrients. Eight different fertilizer combinatio… RUF-34343 2010 CC BY 4.0 20 Aug 2015
Working Document Series Open Access Farmer perception on effects of the witch weed infestations in sorghum in Ishongorero sub county, Ibanda district, south western Uganda B. Bua · C. Nowamani Sorghum (Sorghum bicolor (L.) Moench is the fifth most important cereal in the semi arid regions of the world in terms of production and area planted. However, sorghum production is constrained by a number of factors including pests and di… RUF-34289 2014 CC BY 4.0 17 Aug 2015
Working Document Series Open Access Modeling potential impact of climate change on sorghum and cowpea performance under different tillage and cropping systems in semi-arid areas of Kenya T. Kirina Kitinya · R.N. Onwonga Field trials were carried out at Kambi ya Mawe location in Eastern Kenya during the long rains (LRS) of 2010 and short rains (SRS) of 2010/2011, to evaluate effect of tillage and cropping system on performance of sorghum (Sorghum bicolor L… RUF-34272 2014 CC BY 4.0 17 Aug 2015
Working Document Series Open Access Preliminary compositional nutrient diagnosis for rubber tree in the humid forest zone of Cameroon E. Ehabe Ejolle · G. Elambo Nkeng · J. Njukeng Nkengafac · Ewalds. Schnug The main source of natural rubber is the rubber tree (Hevea brasiliensis), an important crop to the Cameroonian economy. In order to improve yields while maintaining tree sustainability, nutrient norms must be derived for proper nutrient a… RUF-34183 2014 CC BY 4.0 14 Aug 2015
Working Document Series Open Access Evaluation of local dairy goat feed resources in Kongwa district, Tanzania S.W. Chenyambuga · T. Damas Msaki · D.M. Komwihangilo · E.E. Ndemanisho Decrease in quantity and quality of pastures during the dry season in Kongwa District has resulted into reduced milk production from the improved dairy goat breeds in the area. Available indigenous leguminous tree and shrub leaves can supp… RUF-34154 2014 CC BY 4.0 13 Aug 2015
Working Document Series Open Access Vegetative growth of Lablab purpureus and Canavalia ensiformis under differing P fertiliser applications in Namibia M. G. Appollis · L. Kaholongo · A. Kahumba · E. Lutaaya +1 more The level of N fixation from effectively nodulated legumes depends on the growth rate of the legume and upon soil conditions. The main objective of this study was to compare the vegetative growth of Lablab purpureus and Canavalia ensiformi… RUF-34148 2014 CC BY 4.0 13 Aug 2015
Working Document Series Open Access Effect of organic and urea nitrogen fertilisers on soil properties and maize yield in highlands of Rwanda B.O. Danga · C. Karemangingo · O. Tuyishime Continuous cropping without nutrient restitution under smallholder farms in Rwanda has led to serious nutrient depletion and reduced maize (Zea mays) yields. This is further exacerbated by low soil organic matter and soil erosion. The smal… RUF-34122 2014 CC BY 4.0 13 Aug 2015
Working Document Series Open Access Response of introduced soybean varieties to inoculation with rhizobium in Sud Kivu province, Democratic Republic of Congo A.A. Angelani · K.D. Bamuleke · B.J. Bashagaluke · B.L. Shukuru +1 more Soybeans are a major source of protein; they contribute to combating malnutrition especially among children. They play very important roles in NRM because they contribute to biological nitrogen fixation through the inoculation with rhizobi… RUF-34121 2014 CC BY 4.0 13 Aug 2015
Working Document Series Open Access In-season nitrogen prediction for the quality protein maize using the pocket hand-held NDVI sensor on farmers’ field around Ilu-Gelan and Bako-Tibe, Ethiopia Tolera Abera · Tolessa Debele · Haekoo Kim · Ernest Semu +1 more The “pocket” hand-held Normalized Difference Vegetative Index (NDVI) sensor for inseason highland quality protein maize nitrogen rate determination for side-dressing was conducted in 2013cropping season on seven farmers’ field around Bako-… RUF-34117 2014 CC BY 4.0 13 Aug 2015
Working Document Series Open Access Biomass accumulation and nitrogen fixation of soybean varieties, grain yields of soybean and maize intercropped at different planting densities in western Kenya F. Baijukya · R. Onwonga · M. Simbine Biomass accumulation and nitrogen fixation of soybean (Glycine max) and grain yields of maize (Zea mays) and soybean intercropped at different planting densities was assessed in two villages of Butere and Mumias district of western Kenya d… RUF-34108 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
Working Document Series Open Access Combining ability and gene action in a diallel cross of eight sesame genotypes P. Gibson · W Okello-Anyanga · P.R. Rubaihayo · P. Tukamuhabwa An 8 x 8 diallel cross mating design with the parents and F1s excluding the reciprocals was used to estimate gene action and combining ability analysis for yield and some yield components in sesame (Sesamum indicum). These genotypes were e… RUF-34073 2014 CC BY 4.0 13 Aug 2015
