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SUSTAINING COFFEE PRODUCTION THROUGH INTERCROPPING SYSTEMS IN DAKLAK PROVINCE, VIETNAM
BUI TUAN
MASTER OF SCIENCE (AGRICULTURE)
IN AGRICULTURAL SYSTEMS
GRADUATE SCHOOL CHIANG MAI UNIVERSITY
MAY 2003
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SUSTAINING COFFEE PRODUCTION THROUGH INTERCROPPING SYSTEMS IN DAKLAK PROVINCE, VIETNAM
BUI TUAN
A THESIS SUBMITTED TO THE GRADUATE SCHOOL IN PARTIAL FULFILLMENT OF THE REQUIREMENTS
FOR THE DEGREE OF MASTER OF SCIENCE (AGRICULTURE)
IN AGRICULTURAL SYSTEMS
GRADUATE SCHOOL CHIANG MAI UNIVERSITY
MAY 2003
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SUSTAINING COFFEE PRODUCTION THROUGH INTERCROPPING SYSTEMS IN DAKLAK PROVINCE, VIETNAM
BUI TUAN
THIS THESIS HAS BEEN APPROVED
TO BE A PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF SCIENCE (AGRICULTURE)
IN AGRICULTURAL SYSTEMS
EXAMINING COMMITTEE
... CHAIRMAN Lect. Phrek Gypmantasiri
... MEMBER Asst. Prof. Dr. Attachai Jintrawet
... MEMBER Assoc. Prof. Dr. Tavatchai Radanachaless
... MEMBER Dr. Minh Ha Hoang Fagerstrom
2 May 2003
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Acknowledgements
I would like to expresses my sincere gratitude to many people who taught, helped, and inspired to accomplish my study at Chiang Mai University.
Firstly, I would like to express my profound and sincere gratitude and respect to Ajarn Phrek Gypmantasiri, my Academic Advisor and Chairman of my thesis committee for his untiring help, valuable comments and continuous guidance throughout the duration of study. I extend my sincere thanks to Asst. Prof. Dr.
Attachai Jintrawet, Assoc. Prof. Dr. Tavatchai Radanachaless and Dr. Minh Ha Hoang Fagerstrom, committee members, for their valuable comments, constructive suggestion for the refinement of the study results
.
My sincere gratitude goes to all lecturers, staff members of Multiple Cropping Center (MCC), Faculty of Agriculture, Chiang Mai University, who shared their knowledge, experiences, and provided assistance during my study.
This study would not have been successfully completed without the scholarship grant of The Rockefeller Foundation. I am indebted the people and should have to use the knowledge for the social development in the future.
My deepest appreciation to Dr. Ruben Puentes, Program Officer of the Project Generation and Dissemination, Dr. Bui Huy Hien, Dr. Tran Thuc Son, Dr. Tran Thi Tam, Dr. Tran Duc Toan, the Leaders of Vietnam National Institute for Soils and Fertilizers, Mr. Le Hong Lich, Mr. Trinh Cong Tu, and Mr. Ho Cong Truc, the Leaders of Central Highlands Soils Research Center who encouraged and extended necessary support for my study. I am also thankful to my colleagues and staff members of Central Highlands Soils Research Center for valuable assistance during my study.
I would like to express my sincere thanks to my roommates, Mr. Do Ngoc Sy and Mr. Dorjee for their special help during two years of study. My special thanks go to all AGS students, especially my classmates, namely, Ms. Deunram Borgnern, Ms.
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Maleetar Nimnuan, Ms. Nguyen Thi Minh Chau, Ms. Trinh Thi Tien, Ms. Nguyen Thi Chuc, Mr. Utt Autchariyamontree, Mr. Dorjee, Mr. Khampheng Mounmeuangxam, Mr. Somsamout Phongsavath, Mr. Thongsamout Phoummasone, Mr. Pech Sithan, Mr. Do Ngoc Sy, Mr. Do Quang Giam, Mr. Duong Dang Khoi, Mr.
Le Trung Nhan, Mr. Nguyen Chi Trung, Mr. Nguyen Duy Phuong, and Mr. Truong Quang Hoang, for the warm and friendly relationship and companionship during my study and stay at Chiang Mai. Many thanks to overseas Vietnamese and Vietnamese students who helped, encouraged, and shared together joyful moments during the time out of motherland.
Many many thanks go to the farmers and village leaders of Ea Ktur for their cooperation, kind help and support during my survey in the village. I can not forget hearty help from extension workers, meteorological workers, and researchers of DakLak for providing information and data involvement to my thesis.
Finally, it is pleasure to express hearty gratitude to my beloved grandmother, parents, aunt, and uncle who sacrificed their lives for my success, my sister and brothers for the moral support. My beloved children, Bui Pham Thuy Giang and Bui Pham Minh Nhat, and my beloved wife, Pham Thi Thu who are my source of inspiration and dedication for their love, understanding, and continuing encouragement during the time of my study in Chiang Mai, Thailand.
Bui Tuan
