TY  - JOUR 
T1  - Orchard trunk recognition model based on improved YOLOv9
JO  - Engenharia Agrícola
A1  - Liu, Jianzheng
A1  - Han, Jiangyi
A1  - Huang, Minghao
SN  - 0100-6916
UL  - 10.1590/1809-4430-Eng.Agric.v46e20250139/2026
VL  - 46 
Y1  - 2026
PB  - Brasil 
ER  -