Professeur.Willy Marcel Ndayitwayeko
Nom et prénom :Willy Marcel Ndayitwayeko
Faculté/Institut : Faculté des Sciences Economiques et de Gestion (FSEG)
Centre de recherche : CURDES
- The new orange-fleshed sweet potato varieties have been adopted with the aim of increasing production, farmers' welfare, and combating chronic malnutrition (ENSNSAB, 2019). This study analyzed the impact of orange-fleshed sweet potato adoption on production in Gihanga commune using the propensity score matching method. A survey of 385 households was carried out, including 161 orange-fleshed sweet potato adopters and 224 non-adopters. The determinants and rate of adoption of orange-fleshed sweet potato were also analyzed using the logit model and the ATE method respectively, while Kendall's Concordance Coefficient was used to determine adoption constraints. Thus, unpredictable weather and climatic conditions, lack of capital, unavailability of PDCO cuttings, insufficient arable land as well as high labor costs are the main constraints to orange-fleshed sweet-potato adoption. The adoption rate for orange-fleshed sweet potatoes is estimated at 42%. Adoption of PDCO was positively and significantly influenced by the household head's level of education, family labor, access to credit, access to extension services and membership of producer organizations, while the household head's age and household size had a negative impact on adoption. The ATT revealed that the adoption of orange-fleshed sweet potatoes increased production per adopter household by an average of 369.88 kg, although the difference was not statistically significant. The government and other players in the agricultural sector should do their part to raise awareness, disseminate, facilitate access and mobilize farmers to adopt sweet potato varieties in order to improve their productivity.
Keywords: adoption, Orange-fleshed sweet-potato, propensity score matching
publier le 2025-03-11 11:33:21
- The sweet potato is one of the most widely consumed tubers in Burundi. There are several varieties, including the orange-fleshed sweet potato (OFSP), which contains beta-carotene, a precursor of vitamin A. The aim of this study was to analyze the effects of nutritional knowledge on the decision and intensity of purchase of OFSP and to analyze the psychosocial factors influencing preference for OFSP. It focused on consumer food preference, a decision affected by a range of factors, including nutritional knowledge, and was conducted in the commune of Ntahangwa. This study applied a multistage sampling method to identify survey respondents. Three markets in Ntahangwa commune, including Kamenge, Buterere and Kinama were deliberately selected based on their location in the city of Bujumbura. The difference in location allowed the survey to target consumers with different socioeconomic characteristics.Qualitative and quantitative data were collected from 385 respondents. A double-barrier model was used to analyze the effect of nutritional knowledge on sweet-potato purchase preference and intensity. The results indicate that nutritional knowledge has a positive effect on preference and purchase intensity of OFSP. The main characteristics for which respondents chose to buy OFSP were good sensory attributes and the ingredients of the OFSP variety. Consequently, the objectives that motivate the preference and consumption of OFSP include the desire to stay healthy, long life, taste and price. This study recommends that efforts to promote OFSP should emphasize the nutritional benefits, particularly as a source of vitamin A. In addition, markets and sellers of OFSP need to improve product design, particularly sensory attributes to satisfy consumer preferences.
Keywords: orange-fleshed sweet potato, preference, consumption
DOI: 10.7176/JESD/15-5-02
publier le 2025-03-11 11:35:21
- Burundi, like other countries, invests in agricultural research and development. The adoption of the most productive varieties is one of the ways of increasing agricultural yields. Rice, because of its high productivity, is among the cereals which occupy an important place in the food security strategy in Burundi. This study aims to identify the effect of the adoption of this variety on the productivity of rice farmers. Using random sampling technique was used to select the respondents to fill the questionnaires, Data were collected from 524 rice farmers spread across the five villages namely Buringa (V1), Murira (V2), Nyeshanga (V3) , Ninga (V4) and Bwiza (V6) of the Gihanga commune in Bubanza, Burundi. The analysis of the determinants and the quasi-experimental method based on propensity score matching was used in the estimation of the results of the effect of adoption of the rutete variety on the productivity of rice farmers. To minimize the biases related to the difference between the characteristics of adopters and non- adopters, the propensity score matching method was used to estimate the results. The study found that First, the average yield for rice farmers who adopted the rutete variety is 9754 kg/ha, while those who did not have an average of 7927 kg/ha. Second, adopting households if they decided not to adopt this variety, their counterfactual rice yield would be 7931 kg/ha, while non-adopting rice farmers if they decided to adopt, their counterfactual rice yield would be 7931 kg/ha for adopters and for non-adopters reached 9912 kg/ha. Third, the average effect of the treatment on the rice yield of the adopters corresponds to 1823 kg/ha and it is positive and significant (p<0.01). The decision to adopt for non-adopting rice farmers could increase the average yield by 1984 kg/ha. The results indicate that the yield of households that adopted the rutete rice variety increased relatively compared to those that did not. This implies the positive role of the adoption of the rutete rice variety on the performance of rice farmers in Gihanga. It is recommended that the government and research institutions involved in the agricultural sustainable development have to support rice farmers by increasing agricultural research innovation with the aim of increasing the yield of farmers.
Keywords: Adoption, Effect – Matching, Rutete Rice, Yield
publier le 2025-03-11 11:41:40
- Aims: This paper is to carry out a comparative analysis on seed germination of four indigenous tree varieties so that they may be used for reforestation and enhancing biodiversity in their ecosystems. Study Design:An experimental research was on four indigenous tree varieties were chosen based Original Research Article
on their socio-economic and biodiversity importance: Maesopsis eminii(Umuhumure); Albizia gummifera(umusebeyi), Entandrophragma excelsum(Umuyove)and Prunus africana(Umuremera). Three substracts were separately prepared in which 100 seeds of each varieties were planted and their growth were monitored daily in were controlled nursery.Place and Duration of Study:From October to December 2023, data were collected after 5 days on the following indicators, growth, cinetic and duration of germination. Analytical tools such as anova and regression were applied.Methodology:Three substracts were separately prepared in which 100 seeds of each varieties were planted and their growth were monitored daily in were controlled nursery.Results:The number of grain germinated increased as the time goes by but it is the variety Umuhumure which marked with a higher and steady growth than other variety and Umusebeyi, 80 out of100, tops in the number of grain germinated after three months. The study shows that rates of growth were 74, 37, 29 and 14 out of 100 for Umusebeyi, Umuremera, Umuyove and Umuhumurerespectively. On overall, with one-way ANOVA, means of grains germinatedof the three indigenous trees are significantly different (<0.01) when grain variety factor is considered but when the interaction between variety and replication are also considered (two-way ANOVA), the two have a significant effect on the number of grains germinated (<0.01). Other findings are the effect of the germinated grains depends on the number of replication and period of grains growth (in terms of days). 6% and 48% variations explain the interaction between replication and type of variety on onehand and the number of variety growth on the other hand.Conclusion:the Albizia gummifera(Umusebeyi) to be considered when the reforestation of indigenous tree is undertaken. However, other varieties may be used if the right substracts and growth conditions are found.
Keywords: Indigenous trees; replication; ANOVA; biodiversity
publier le 2025-03-11 11:59:26
- The new orange-fleshed sweet potato varieties have been adopted with the aim of increasing production, farmers' welfare, and combating chronic malnutrition. This study analyzed the impact of orange-fleshed sweet potato adoption on production in Gihanga commune using the propensity score matching method. A survey of 385 households was carried out on April 2023, including 161 orange-fleshed sweet potato adopters and 224 non-adopters. The determinants and rate of adoption of orange-fleshed sweet potato were also analyzed using the logit model and the Average Treatment effect on the Treated (ATT) method respectively, while Kendall's Concordance Coefficient was used to determine adoption constraints. Thus, unpredictable weather and climatic conditions, lack of capital, unavailability of PDCO cuttings, insufficient arable land as well as high aborcosts are the main constraints to orange-fleshed sweet-potato adoption. The adoption rate for orange-fleshed sweet potatoes is estimated at 42%. Adoption of PDCO was positively and significantly influenced by the household head's level of education, family labor, access to credit, access to extension services and membership of producer organizations, while the household head's age and household size had a negative impact on adoption.The ATT revealed that the adoption of orange-fleshed sweet potatoes increased production per adopter household by an average of 369.88 kg, although the difference was not statistically significant. The government and other players in the agricultural sector should do their part to raise awareness, disseminate, facilitate access and mobilize farmers to adopt sweet potato varieties in order to improve their productivity.
Keywords: Innovation; new variety; tubers; propensity score matching; mobilize farmers; sweet potatoes
publier le 2025-03-11 12:07:38
