@article{liu_han_huang_2026,  title={Orchard trunk recognition model based on improved YOLOv9},  volume={46},  ISSN={0100-6916},  url={https://doi.org/10.1590/1809-4430-Eng.Agric.v46e20250139/2026},  DOI={10.1590/1809-4430-Eng.Agric.v46e20250139/2026},  journal={Engenharia Agrícola},  publisher={Associação Brasileira de Engenharia Agrícola},  author={Liu, Jianzheng and Han, Jiangyi and Huang, Minghao},  year={2026},  pages={e20250139} }