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Development of new potato varieties

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The development of new and better potato varieties is one of the key elements for a solid and profitable potato industry.

RELATED DOCUMENTS
The effects of potato virus Y-derived virus small interfering RNAs of three biologically distinct strains on potato (Solanum tuberosum) transcriptome
September 19 2017 by INKOA

Potato virus Y (PVY) is one of the most economically important pathogen of potato that is present as biologically distinct strains. The virus-derived small interfering RNAs (vsiRNAs) from potato cv. Russet Burbank individually infected with PVY-N, PVY-NTN and PVY-O strains were recently characterized. Plant defense RNA-silencing mechanisms deployed against viruses produce vsiRNAs to degrade homologous viral transcripts. Based on sequence complementarity, the vsiRNAs can potentially degrade host RNA transcripts raising the prospect of vsiRNAs as pathogenicity determinants in virus-host interactions. This study investigated the global effects of PVY vsiRNAs on the host potato transcriptome. 

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Formative Gender Evaluation: Technical Report on the Viable Sweetpotato Technologies in Africa – Tanzania project
July 19 2017 by INKOA

This report is based on a qualitative formative gender evaluation of the Viable Sweetpotato Technologies for Africa (VISTA) Tanzania project implemented in seven districts in the Mbeya, Iringa and Morogoro regions, which are part of USAID’s (United States Agency for International Development) Feed the Future zone of influence.

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Potential determinants of profits and market efficiency of potato market chains in Uganda
June 22 2017 by INKOA

The study aimed at understanding the level of inefficiencies in the potato market chain. Farmers sell potato to traders but continue to complain of limited market access and low profits. The purpose of this paper is to determine market efficiency and profits of the potato market chain, and factors that influence the profits. Design/methodology/approach: The study focussed on potato farmers, traders and small-scale processors. It was conducted in Kabale and Mbale districts being the major potato producing areas in Uganda, and Kampala being a major potato market. Data were collected from 180 farmers, 60 traders and 32 small-scale processors. Descriptive and regression methods were used to analyse the data. Findings: There were three major potato market chains and all were profitable and efficient. The farmer-buyer node was the most efficient (efficiencies of 128-159 per cent). The trader node efficiency ranged between 56 and 81 per cent. Sex of chain actor, group marketing, contract duration and distance to market were among the factors that affected profits. Research limitations/implications: Processors considered were those operating on very small scale, hence results do not apply to large-scale processing. Consumers were not included but the data and results are adequate for the study objective. Originality/value: This paper provides empirical information that serves as a basis to adopt market options for increased benefits to various chain actors.

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Factors Enhancing Household Nutrition Outcomes in Potato Value Chain in South-Western Uganda
June 19 2017 by INKOA

In Uganda, agricultural commercialization has been promoted to reduce poverty and improve household food security. South-western Uganda, the major producer of potato, has been considered the food basket of the country but it has one of the highest prevalence rates of stunting in children under 5. This study considered potato enterprise as a key pathway for enhancing household food and nutrition security because it has become a major income source and staple in the diets of many households in the area and most urban areas in the country. The objective was to determine factors that influence farm household nutrition and food security outcomes. Through a survey, data were collected from 434 randomly selected potato farmer households. Descriptive and econometric methods were used in data analysis. Results show that household dietary diversity score was low (3.2) for most (57%) of the households. Only 38% were food secure. The main factors enhancing household nutrition outcomes were size of land, livestock units owned, proportion of household income spent on food, and education of household head, while farmer’s experience in potato production had a negative effect. The size of land owned, crop diversification, income from potato, age and education of household head, and a famer being male enhanced household food security outcomes. The study recommends promoting improved production practices to maximize land productivity, integration of livestock in potato production, and training women and men in household food and nutrition and related use of income.

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Adoption of Improved Potato Varieties in Nepal
June 19 2017 by INKOA

Nepal is one of the top twenty countries where potato contributes substantially to the human diet. Enhancing adoption of improved potato varieties could impact on farmer's income, household food, and nutritional security. As such, using a multistage sampling procedure, a study was conducted to assess the determinants of improved potato varieties adoption in Nepal covering 180 samples in four districts, two in hills and two in Tarai region. The study revealed that; Kavre and Bardiya districts in the hills and Tarai, respectively, were dominated by improved potato varieties adoption. On the other hand, Dhankuta and Jhapa in the hills and Tarai, respectively, were dominated by local potato varieties adoption. The informal seed sources followed by agro-vet and market were the major sources for improved varietal adoption. Farmers' accesses to training and formal seed sources were an important factor determining improved potato varietal adoption. However, households with larger farm size were less likely to allocate more area for improved potato varieties as many of farmers were reluctant to take potato cultivation as agri-business and still follow subsistence farming. Potato R&D programs, therefore, need to strengthen formal seed system to enhance access to quality potato seeds and build producer's capacity through regular training and exposer visits in order to improve adoption of improved potato varieties in Nepal.

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