ENVIRONMENTAL EFFICIENCY OF EDIBLE CANNA PRODUCTION IN NORTHEASTERN COMMUNES OF THAI NGUYEN PROVINCE: A DATA ENVELOPMENT ANALYSIS (DEA) APPROACH

Abstract
While existing literature on agricultural environmental efficiency in Vietnam predominantly focuses on paddy rice, aquaculture, and perennial industrial crops using the Stochastic Frontier Analysis (SFA) approach, this study bridges the empirical gap by pioneering the application of Data Envelopment Analysis (DEA) to measure the environmental efficiency (EE) of edible canna production. Primary data were collected through face-to-face interviews with 200 canna-producing households in the northeastern region of Thai Nguyen province, a key material area for One Commune One Product (OCOP) canna vermicelli. The DEA-VRS (Variable Returns to Scale) model was employed to measure the utilization efficiency of environmentally detrimental inputs, specifically chemical fertilizers (N, P, K) and fossil fuels. Subsequently, a Tobit regression model was applied to identify the determinants influencing the EE of these households. The results indicate that the average environmental efficiency score of canna producers stands at only 68.5%, reflecting a substantial overuse of environmentally detrimental inputs. This figure concurrently implies an environmental inefficiency level of 31.5% (1-EE), suggesting that households could potentially reduce environmentally detrimental inputs by 31.5% while fully maintaining their current output levels. The Tobit regression results reveal that educational level, farming experience, cooperative membership, access to technical training programs, and environmental awareness are statistically significant determinants of the EE among canna-producing households. These findings provide a robust scientific basis for enhancing the environmental efficiency of edible canna production, thereby contributing to the sustainable development of the OCOP canna vermicelli value chain in the Northern mountainous region.
Keywords: Environmental efficiency, data envelopment analysis (DEA), Edible canna, OCOP, Thai Nguyen province, sustainable development.
JEL classification: O13, Q01, Q13.
DOI: 10.63767/TCKT.36.2026.184.19

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Ban biên tập Tạp chí Kinh tế & Quản trị Kinh doanh
Phòng 514, Nhà điều hành, trường Đại học Kinh tế & Quản trị Kinh doanh
Địa chỉ: Phường Tân Thịnh, thành phố Thái Nguyên
Email: tapchikt-qtkd@tueba.edu.vn; Điện thoại: 0208.3903373