PRODUCTIVITY, PROFITABILITY AND COST EFFECTIVENESS OF SEED YAM PRODUCTION UNDER POSITIVE SELECTION TECHNOLOGY IN GHANA AND NIGERIA
| dc.contributor.author | Jonas, Osei-Adu | |
| dc.date.accessioned | 2025-02-13T09:44:55Z | |
| dc.date.available | 2025-02-13T09:44:55Z | |
| dc.date.issued | 2019-07 | |
| dc.description | Thesis submitted to the Department of Agricultural Economics, Agribusiness and Extension in partial fulfillment of the requirements for the degree of DOCTOR OF PHILOSOPHY (Agricultural Economics) | |
| dc.description.abstract | The main challenge that necessitated this study was the limited empirical evidence on Total Factor Productivity (TFP), Cost Effectiveness (CE) and Profitability of seed yam production from Positive Selection (PS) technology as a viral control measure. This study was therefore aimed at estimating TFP, profitability and CE of seed yam production using PS technology. Quasi-experimental design was used for both data collection and analysis through the use of qualitative and quantitative research methods. Through multi-stage sampling, 368 seed yam farmers comprising of PS and Non-PS technology beneficiaries under the Community Action in improving Farmer saved seed yam (CAY-Seed) project were sampled. Qualitative data was collected through focus group discussions with the aid of a checklist. A formal survey using a standardised questionnaire was conducted across project communities in Ghana and Nigeria to generate quantitative data. TFP, Profitability and CE from PS technology were estimated using the metafrontier framework, Net Return on Investment (NRI) and Incremental Cost Effectiveness Ratio (ICER), respectively. Farmer perceptions and constraints from the qualitative analysis are presented in the form of tag clouds based on focus group discussions. TFP (0.758) from seed yam production using PS technology is significantly higher than the non-use (0.700) such that the use of PS technology leads to 5.8% productivity improvement. Metatechnology Ratio (MTR) from using PS technology (0.934) is significantly higher than Non-PS technology (0.911) with a technology gap of 7% and 9%, respectively. Land, seed yam, agrochemicals, neem powder application and labour are significant determinants of productivity with neem application having the greatest effect. Technical inefficiency in seed yam production is determined by sex, experience in yam production, educational level of farmer and extension contact. Producing seed yam under PS technology was cost effective with ICER of US$ 54.0/t as compared to US$ 1,348.72/t for not using PS technology. With a NRI of 56.80 %, seed yam production under PS technology is profitable compared to Non-PS (30.11%). It is therefore recommended that the extension system in Ghana and Nigeria should promote PS technology as a viral control measure for seed yam production due to its profitability, CE and high productivity. | |
| dc.description.sponsorship | KNUST | |
| dc.identifier.uri | https://ir.knust.edu.gh/handle/123456789/16233 | |
| dc.language.iso | en | |
| dc.publisher | KNUST | |
| dc.title | PRODUCTIVITY, PROFITABILITY AND COST EFFECTIVENESS OF SEED YAM PRODUCTION UNDER POSITIVE SELECTION TECHNOLOGY IN GHANA AND NIGERIA | |
| dc.type | Thesis |