TABLE OF CONTENTS

ACKNOWLEDGEMENTS
CHAPTER 1: INTRODUCTION
1.1. Introduction
1.2. Background of the Study
1.3. Theoretical Framework of the Study
1.4. Conceptual Framework of the Study
1.5. Statement of the problem
1.6. Hypothesis
1.7. Objectives
1.8. Definition of Terms
CHAPTER 2: REVIEW OF RELATED LITERATURE AND STUDIES
2.1. Related Literature
2.2. Related Studies
CHAPTER 3: RESEARCH METHODOLOGY
3.1. Research Materials
3.2. Experimental approach
CHAPTER 4: RESULTS, ANALYSIS AND INTERPRETATION OF DATA
4.1. The current vegetables productivity of Thai Nguyen City
4.2. Actuality of soil and fertilizer in vegetables production area of Thai Nguyen City
4.2.1. Soil
4.2.2. Situation of using fertilizers
4.2.3. Situation of using pesticides to vegetables
4.3. Effect of different nitrogen types on yield performance and residual of NO3- in mustard
4.3.1. Effect of nitrogen on yield performance of mustard
4.3.2. The effect of nitrogen types to NO3- variation in mustard
4.3.3. The effect of nitrogen types to changes of NO3- in the soil
CHAPTER 5: CONCLUSIONS AND RECOMMENDATIONS
REFERENCES