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• Using Tobit Regression Model to Determine Safety Limit of Lead (Pb) in Irrigation Water for Lettuce Grown onEutric Fluvisols in Red River Delta

  Nguyen Thi Giang, Nguyen Van Dung, Nguyen Thi Hang Nga

  Date Received: 15-03-2023 / Date Accepted: 24-05-2023

   Abstract PDF (VIETNAMESE)

  The study was conducted to determine the safety limit of irrigation water contaminated with Pb for lettuce (Lactuca sativa L.) cv. Rapido 344 grown on Eutric Fluvisols. In pot experiments in net house were carried our with six levelsof Pb-contaminated water (0.0; 0.1; 0.5; 1.0; 2.0. and 4.0 mg/l) used for irrigation. The results showed that Pb-contaminated water increased Pb concentration in the lettuce from 0.19 mg/kg to 1.43 mg/kg and in the soil from 2.63-4.97 mg/kg compared to irrigation withPb non-contaminated water. With Tobit regression model, the safety limit of Pb in irrigation water less than 0.90 ppm was estimated with the mobile Pb form content in soil less than 7 mg/kg.

• Factors Affecting Women's Empowerment in Agricultural Production in the Mekong River Delta

  Cao Minh Tuan, Vo Thi Anh Nguyet, Thach Keo Sa Rate

  Date Received: 26-02-2025 / Date Published: 21-03-2025

   Abstract PDF (VIETNAMESE)

  This study analyzes women's empowerment in agricultural production in the Mekong River Delta and the factors influencing its extent. The Abbreviated Women's Empowerment in Agriculture Index (A-WEAI) is used to measure empowerment levels, while the Tobit model identifies influencing factors. Structured interviewing wasn applied to collect data from 365 households across four provinces (Ca Mau, Can Tho, Kien Giang, and Vinh Long). The findings reveal that while 72.9% of women achieved empowerment in agricultural production, significant disparities existed in accessing financial resources and leadership opportunities. The Women's Empowerment in Agriculture index had an average score of 0.83. A Tobit regression model identified key factors influencing women's empowerment, including age, Internet access, participation in training programs, and household land area. The study underscores the need for targeted policies to enhance women's empowerment in agricultural production in the region.

  DOI: https://doi.org/10.1234/yve4jb79

• Factors Affecting MarketParticipation of Ho Chicken Farming Households in Thuan Thanh District, Bac Ninh Province

  Bui Hong Quy, Do Thi My Hanh, Nguyen Van Phuong

  Date Received: 12-08-2016 / Date Accepted: 01-02-2018

   Abstract PDF (VIETNAMESE)

  The study was conducted to analyze the level of market participation of Ho chicken farming households in Thuan Thanh district, Bac Ninh province. Censored regression model (Tobit model) was used to evaluate the factors affecting market participationlevelof 68 Ho chicken farminghouseholds. Results indicatedthat the subsistencehouseholds accounted for thehighest involvement percentage with 39.7%,followed by commercial households and transitionhouseholds with 35.3% and 25%,respectively. Experience of household head, family labor, farm size, Ho chickenherd sizeand households’ accesstoextension service hada positive influence on the level of market participation of the households whilethe age of household head and percentage of average annual non- farm income showeda negative influence on the level of market participation of the households.