Technical Report: Evaluation of potato (Solanum tuberosum L.) genotypes for adaptability in Mt. Elgon Region of Uganda

European UnionInternational Fund for Agricultural Developmen

Technical Report: Effect of storage conditions on the processing quality of different potato varieties grown in Eastern Uganda

European UnionInternational Fund for Agricultural Developmen

Training report: Enhancing ware potato storage critical steps in pre and post-harvest and storage management of potato in field for best ware quality.

This reports presents the training activities that have been undertaken by the RTB-ENDURE project in order to ensure that farmers, particularly the ones hosting the pilot storage facilities, have the required skills and capacities required to successfully manage the stores and enhance the profitability of potato marketing

Correction: Studholme et al., Draft Genome Sequences of Xanthomonas sacchari and Two Banana-Associated Xanthomonads Reveal Insights into the Xanthomonas Group 1 clade. Genes 2011, 2, 1050-1065

Published ErratumThis is the final version of the article. Available from MDPI via the DOI in this record.NOTE: the original article is in ORE at http://hdl.handle.net/10036/3880Following publication of our article [1], we found errors in analyses performed by the corresponding author (DJS) related to the phylogenetic relationship between Xylella species and the other xanthomonads. These errors do not make any difference to the main findings and conclusions reported in our paper. For example, the phylogenetic positions of NCPPB1131, NCPPB1132 and NCPPB4393 within the Group 1 Xanthomonas species are unaffected. However, we wish to apologize to the authors of a previous work [2] for creating any negative impression on the quality of their phylogenetic analyses and to take this opportunity to rectify the errors. [...]

Potato farmer and markets strategies to cope with seasonalities and implications for postharvest losses in eastern Uganda.

European UnionInternational Fund for Agricultural Developmen

Genome Sequencing of Xanthomonas vasicola Pathovar vasculorum Reveals Variation in Plasmids and Genes Encoding Lipopolysaccharide Synthesis, Type-IV Pilus and Type-III Secretion Effectors

This is the final version. Available on open access from MDPI via the DOI in this recordXanthomonas vasicola pathovar vasculorum (Xvv) is the bacterial agent causing gumming disease in sugarcane. Here, we compare complete genome sequences for five isolates of Xvv originating from sugarcane and one from maize. This identified two distinct types of lipopolysaccharide synthesis gene clusters among Xvv isolates: one is similar to that of Xanthomonas axonopodis pathovar citri (Xac) and is probably the ancestral type, while the other is similar to those of the sugarcane-inhabiting species, Xanthomonas sacchari. Four of six Xvv isolates harboured sequences similar to the Xac plasmid, pXAC47, and showed a distinct Type-IV pilus (T4P) sequence type, whereas the T4P locus of the other two isolates resembled that of the closely related banana pathogen, Xanthomonas campestris pathovar musacearum (Xcm). The Xvv isolate from maize has lost a gene encoding a homologue of the virulence effector, xopAF, which was present in all five of the sugarcane isolates, while xopL contained a premature stop codon in four out of six isolates. These findings shed new light on evolutionary events since the divergence of Xvv and Xcm, as well as further elucidating the relationships between the two closely related pathogens.This study was supported in part by the National Agriculture Research Organisation, Uganda, under the MSI/World Bank grant 2009

Ware potato harvesting and storage techniques: guidelines for harvesting and storage management of ware potato.

Potatoes are commonly regarded as a bulky, perishable commodity with high transport costs and limited export potential, confined mostly to cross-border transactions. The potato is a good source of dietary energy and some micronutrients, and its protein content is very high in comparison with other roots and tubers. Fresh potato consumption is the major form of utilization, however processing has improved to meet rising demand from the fast food, snack and convenience food industries. The growing urban populations, rising incomes, the diversification of diets and lifestyles is the driver behind this new development. This guide therefore gives the basic principles for potato harvesting and storage to ensure good quality ware potato for enhanced market access and better prices

Survey and management of potato pests in Uganda

Potato (Solanum tuberosum L.) is an important food and income generating crop for its growers. The crop is also nutritionally rich in carbohydrates, vitamins (C and B), proteins, minerals (potassium) among other nutritional components. In Uganda, potato has been recognized as a crop with potential for nutrition security and income generation. Despite these benefits, average potato yield (4.8 t/ha) in Uganda is still comparatively lower than attainable global average yield (30 to 40 t/ha), owing to several biotic and abiotic production constraints. A study was conducted to establish the status of potato pests and diseases in north eastern and south western Uganda to include districts such as Mbale, Namisindwa, Kween, Kapchorwa and Kabale, Rubanda, Kisoro, respectively. The study was aimed at assessing the incidence and prevalence of key pests and diseases affecting potato in Uganda, with special emphasis on potato cyst nematode. Several pests and diseases including leaf miner flies, aphids, potato tuber moths, whiteflies, viruses, several nematode species, bacterial wilt (Ralstonia solanacaerum), and Fusarium spp. were observed to be affecting potato. Through the prospections conducted in this survey, the potato cyst nematode (Globodera rostochiensis) was identified in north eastern and south western areas of Uganda. Male farmers were more engaged in decision-making activities for potato production than their female counterparts in Eastern Uganda. An inclusive and multi institutional team was tasked to conduct this potato disease survey; this exercise was led by the International Institute of Tropical Agriculture (IITA) and the International Fertilizer Development Centre (IFDC-GIZ), with the special cooperation of the International Potato Centre (CIP), and the active engagement of the BugiZARDI-NARO and the District Production Office of the District Local Governments and Ministry of Agriculture, Animal Industry and Fisheries-Department of National Crop Certification Services