Bài viết Tình hình sử dụng và tồn dư của paclobutrazol trong đất trồng sầu riêng (Durio zibethinus Murr.) tại tỉnh Tiền Giang và tỉnh Bến Tre được thực hiện với mục tiêu đánh giá hiện trạng sử dụng PBZ để xử lý ra hoa cho cây sầu riêng tại tỉnh Tiền Giang và tỉnh Bến Tre và phân tích hàm lượng PBZ tồn dư trong đất để làm cơ sở cho việc khuyến cáo sử dụng PBZ. | Trường Đại học Nông Lâm TP. Hồ Chí Minh 1 Current status of paclobutrazol application and its residue in durian Durio zibethinus Murr. orchard soil in Tien Giang and Ben Tre provinces Duong T. T. Pham Huong N. D. Thai Tri M. Bui Thuong L. H. Nguyen amp Ky X. Nguyen Faculty of Agronomy Nong Lam University Ho Chi Minh City Vietnam ARTICLE INFO ABSTRACT Research Paper The objectives of the study were to evaluate the current status of paclobutrazol PBZ used for flowering treatment for durian cultivation Received November 23 2021 in Tien Giang and Ben Tre provinces and to analyze residual PBZ in Revised April 21 2022 the soil as a basis for recommending the use of PBZ. In each province Accepted April 24 2022 60 households were directly interviewed by prepared questionnaires. Then 15 selected households with continuous use of the PBZ for at Keywords least 5 years in durian cultivation to conduct soil sampling at depths of 0 to 20 20 to 40 and 40 to 60 cm at the canopy edge and one-half Durian of the canopy diameter for analysis of PBZ residue. The results of the study revealed that there were of households in Tien Giang Paclobutrazol province and of households in Ben Tre province using PBZ Residue higher than the recommended level viz. the average concentrations of Soil PBZ used in Tien Giang and Ben Tre were 1 816 ppm and 1 240 ppm Status respectively. The highest average PBZ concentration in the soil was taken at the canopy edge at a depth of 0 to 20 cm reaching mg Corresponding author per kg Tien Giang province and mg per kg Ben Tre province . There was no residual PBZ in the soil samples collected at one-half of Pham Thi Thuy Duong the canopy diameter at a depth of 40 to 60 cm. Email pttduong@ Cited as Pham D. T. T. Thai Bui T. M. H. N. D. Nguyen T. L. H. amp Nguyen K. X. 2022 . Current status of paclobutrazol application and its residue in durian Durio zibethinus Murr. orchard soil in Tien Giang and Ben Tre provinces. The Journal
