VIETNAM NATIONAL UNIVERSITY OF AGRICULTURE FALCUTY OF AGRONOMY UNDERGRADUATE THESIS TITLE: EFFECT OF FERTILIZER APPLICATION ON GROWTH AND YIELD OF SOYBEAN VARIETY VNUAD2 IN WINTER SEASON 2021 Student: LE DUC HIEN ID: 620010 Class: K62KHCTT Supervisor: Senior lecturer, Dr. VU THI THUY HANG Department: PLANT GENETICS AND BREEDING HA NOI – March, 2021 i DECLARATION I hereby declare that this paper is my own work. All results and data in this thesis are absolutely honest and have not been submitted before to any institution for assessment purposes. All sources used in this paper were cited in references. Hanoi, 10th March 2022 Student Lê Đức Hiền ii ACKNOWLEDGEMENT To complete this thesis, I am deeply indebted to people who have been providing me with precious support and advice. Firstly, I would like to send my gratitude to my supervisor, Dr. Vu Thi Thuy Hang, Department of Plant Genetics and Breeding, Faculty of Agronomy, Vietnam National University of Agriculture, for her enthusiastic support, helpful advice and considerable encouragement in the completion of my thesis. I would also like to express sincere thanks to the lecturers from the Faculty of Agronomy in general and lecturers in the Department of Plant Genetics and Breeding in particular, who taught and created best conditions for students during learning process and research. I would like to give special thanks to Dr. Vu Ngoc Thang, Ms. Phạm Thị Ly and Mr. Hoàng Đức Nhật Linh for their helpful technical supports. Last but not least, I want to express my sincere thanks to my family and friends who have always been by my side, give me support and strength to complete this graduation thesis.