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EVALUATING FACTORS INFLUENCING LITCHI PRODUCTIVITY IN BACGIANG PROVINCE, VIETNAM THROUGH
THE STOCHASTIC FRONTIER ANALYSIS
DO QUANG GIAM
MASTER OF SCIENCE (AGRICULTURE)
IN AGRICULTURAL SYSTEMS
GRADUATE SCHOOL CHIANG MAI UNIVERSITY
APRIL 2003
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EVALUATING FACTORS INFLUENCING LITCHI PRODUCTIVITY IN BACGIANG PROVINCE, VIETNAM THROUGH
THE STOCHASTIC FRONTIER ANALYSIS
DO QUANG GIAM
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
APRIL 2003
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EVALUATING FACTORS INFLUENCING LITCHI PRODUCTIVITY IN BACGIANG PROVINCE, VIETNAM THROUGH
THE STOCHASTIC FRONTIER ANALYSIS
DO QUANG GIAM
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
Assoc. Prof. Dr. Aree Wiboonpongse
……… MEMBER
Lect. Dr. Songsak Sriboonchitta
……… MEMBER
Lect. Laxmi Worachai
……… MEMBER
Assoc. Prof. Dr. Tavatchai Radanachaless
28 April 2003
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Acknowledgements
Many individuals and institutions contributed to my graduate study and the thesis research, and I wish to express deep gratitude to them all. First and foremost, I would like to thank Assoc. Prof. Dr. Aree Wiboonpongse, my Academic Advisor for her invaluable guidance and stimulating suggestions during my study at CMU. I am especially thankful to her for providing background knowledge of analytical economics, econometrics and quantitative approach that are major instruments for doing my thesis research.
I am greatly indebted to Ajarn Dr. Songsak Sriboonchitta, my Co-Advisor, for his encouragements and constructive comments to my study, and I am very much thankful him for knowledge of quantitative method that I learnt through his course to apply for my thesis research. The helpful comments from Assoc. Prof. Dr. Tavatchai Radanachaless and Ajarn Laxmi Worachai, my committee members, are appreciated.
My sincere gratitude go to Ajarn Phrek Gypmantasiri, Chairman of the Agricultural Systems Program, Ajarn Dr. Methi Ekashingh and other lecturers of the Program for their useful comments and suggestions to my seminars presented at Multiple Cropping Center (MCC) that supported for my thesis works.
I would like to express my thanks to all respected academic faculty members of the Agricultural Systems Program and the Faculty of Agriculture for providing me interesting lectures and conceptual challenges. I also would like to thank Khun Om and other MCC staff for their helps during my study at CMU.
My special thanks reserve for the Ford Foundation for the generous help by the financial support throughout my study for a master program at CMU.
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Many thanks go to Rector Prof. Dr. Dang Vu Binh, Prof. Dr. To Dung Tien and Dean Assoc. Prof. Dr. Pham Van Dinh for allowing me to leave HAU to study at CMU and their encouragements. I am thankful to Prof. Dr. Pham Thi My Dung, Assoc. Prof. Nguyen Thi Tam, Dr. Nguyen Viet Song, Dr. Nguyen Quoc Chinh, Mr.
Le Ngoc Huong and other close colleagues for their useful helps and encouragements.
Sincere thanks are also due to farmers, village leaders and local officers in Lucngan district, Bacgiang province for their cooperation and helps during my field survey and interview. Special thanks are for Mr. Do Xuan Binh, Head of Lucngan Agricultural and Land Management office and staff of the office.
I would like to thank all AGS students and Vietnamese friends for their helps and friendship, particularly Trung, Sy, Dorjee, Tuan, Chau, Marrilat, Duenram, Att and Nuna . I am unforgettable to say thanks and respects to oversea Vietnamese, Mr. Chinh and Mr. Khuynh, for their kindness and generous helps.
Finally, I am blessed with love, understanding and encouragement to my parents, Do Khac Kien and Do Thi Be, my beloved wife, Doan Thi Phi Yen, and my lovely sons, Minh and Hieu (Hieu was born while I was writing this thesis), who are my sources of inspiration and dedication.
Do Quang Giam iv