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Evaluation of the effect of DH fertilizer on growth, yield and quality of some fruit trees at Thai Nguyen University of Agriculture and Forestry - 1


THAI NGUYEN UNIVERSITY

UNIVERSITY OF AGRICULTURE AND FORESTRY


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LE LUU LOI


Evaluation of the effect of DH fertilizer on growth, yield and quality of some fruit trees at Thai Nguyen University of Agriculture and Forestry - 1

EVALUATION OF THE IMPACT OF FERTILIZER AMOUNT (DH) ON THE GROWTH, YIELD AND QUALITY OF SOME FRUIT TREE VARIETIES AT THAI NGUYEN UNIVERSITY OF AGRICULTURE AND FORESTRY


UNIVERSITY THESIS


Training system: Full-time

Major: Agroforestry

Class: K47 - NLKH

Faculty: Forestry

Course: 2016-2020

Instructor: Master Nguyen Van Man


Thai Nguyen, 2020


COMMITMENT


I hereby declare that this is my own research result. The data was collected during the implementation of the topic, not copied from anyone. The thesis content refers to some documents listed in the thesis document list. If there is any error, I will take full responsibility.


Thai Nguyen, June 25, 2020

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ACKNOWLEDGEMENTS


Graduation internship is the final stage in the study and practice program of students in universities, colleges and vocational high schools. With the consent of the school's Board of Directors, the Board of Directors of the Forestry Faculty and my own wishes. I was assigned to do an internship at Thai Nguyen University of Agriculture and Forestry with the topic

“Evaluation of the effect of fertilizer amount (DH) on growth, yield and quality of some fruit trees at Thai Nguyen University of Agriculture and Forestry”

To complete my graduation thesis, first of all, I would like to express my deep gratitude to the Board of Directors of the Faculty of Forestry, Thai Nguyen University of Agriculture and Forestry for helping and creating favorable conditions for me during the process of implementing the thesis.

With the guidance and enthusiastic instruction of teachers in the department , especially my supervisor, Master Nguyen Van Man, I have completed this thesis.

In particular, I would like to express my deep gratitude to teacher Dr. Nguyen Thi Thu Hoan for creating conditions for me to do an internship in the guava garden in the dry crop area and for enthusiastically helping and guiding me during the process of implementing this topic.

Here I would like to express my deep and sincere gratitude to the teachers and classmates who helped me complete my internship tasks well.

Due to limited time and level, my topic still has many limitations and unavoidable shortcomings. I look forward to receiving sincere comments from teachers and students to help my topic be more complete.

Thank you very much!

Thai Nguyen, May 2020

Student


Le Luu Loi


LIST OF ABBREVIATIONS


CT: Formula

CAQ: Fruit trees

CV% : Coefficient of variation

Address: Control

KLTB: Average weight

LSD 05 : Least significant difference limit at significance level α = 0.05 NSTT: Actual yield

NS: Productivity

TN: Experiment


INDEX

THANK YOU i

LIST OF ABBREVIATIONS iii

TABLE OF CONTENTS iv

LIST OF TABLES vii

LIST OF FIGURES ix

PART 1. INTRODUCTION 1

1.1. Problem statement 1

1.2. Research objective 3

1.3. Requirements of topic 3

1.4. Meaning of topic 3

1.4.1. Scientific significance 3

1.4.2.Practical significance 3

PART 2. DOCUMENT OVERVIEW 4

2.1. Scientific basis 4

2.2. Origin and classification of Taiwanese guava, Dien grapefruit, Vinh orange 4

2.2.1. Origin and genetic distribution of Taiwanese guava, Dien grapefruit, Vinh orange 4

2.2.2. Classification 5

2.2.3. Nutritional value and uses of guava, grapefruit, orange 6

2.3. Botanical characteristics of Taiwanese guava, Dien grapefruit, Vinh orange 8

2.3.1. Botanical characteristics 8

2.3.2. Ecological characteristics of Guava, Grapefruit, Orange trees 10

2.4. Research situation at home and abroad 12

2.4.1. Research and production situation of guava, grapefruit, orange in the world 12

2.4.2. Research and production situation of Guava, Grapefruit, Orange in Vietnam 16

2.5. Nutrition for guava, grapefruit, orange trees 18

2.5.1. Nutritional requirements for Guava, Grapefruit, Orange 18

2.5.2. Fertilization process 20

2.6. Overview of fruit tree growing model area 21

PART 3. SUBJECTS, CONTENT AND METHODS OF RESEARCH 23

3.1. Research subjects 23

3.2. Location and time of implementation 24

3.3. Research content 24

3.4. Research methods and monitoring indicators 24

3.4.1. Experimental setup 24

3.4.2. Indicators and monitoring methods 25

3.4.3. Data processing method 26

PART 4. RESEARCH RESULTS AND DISCUSSION 27

4.1. Effect of DH organic fertilizer on growth of Taiwanese guava 27

4.2. Effect of DH fertilizer on the growth of grapefruit trees 29

4.3. Effect of DH fertilizer on the growth of Orange 31

4.4. Effect of organic fertilizer DH on growth and development of guava shoots

................................................................ ................................................................ ................................33

4.5. Effect of DH organic fertilizer on growth and development of grapefruit 35

4.6. Effect of DH organic fertilizer amount on growth and development of Vinh 36 orange tree

The experimental results of the effect of DH organic fertilizer on the growth and development of Vinh orange trees are summarized in the following table 36

4.7. Study on the effect of DH organic fertilizer on the growth stage of Taiwanese guava, Dien grapefruit, Vinh orange 38

4.8. Effect of DH organic fertilizer on flowering time of grapefruit trees 39

4.9. Effect of DH organic fertilizer on flowering time of Vinh orange tree 39

4.10. Effect of DH organic fertilizer on fruit set rate of guava trees 40

4.11. Effect of DH organic fertilizer on fruit set rate of Dien grapefruit 41

4.12 Effect of DH organic fertilizer on fruit set rate of Vinh orange tree 43

4.13. Impact on productivity and yield components 44

4.14. Effect of DH organic fertilizer on some fruit quality indicators 45

4.15. Effect of DH fertilizer on guava quality. 46

PART 5. CONCLUSION AND RECOMMENDATIONS 48

5.1. Conclusion 48

5.2. Proposal 48

REFERENCES 49


LIST OF TABLES


Table 2.1 Area, yield and production of grapefruit in the world 13

Table 2.2. Area, yield and production of grapefruit in some countries 14

Main grapefruit plantations in the world in 2017 14

Table 2.3. Orange production situation in regions around the world 15

Table 2.4. Grapefruit production situation in Vietnam from 2015 to 2017 17

Table 2.5. Orange production situation in Vietnam 18

Table 4.1. Effect of DH organic fertilizer on growth

of Taiwanese Guava 27

Table 4.2. Effect of DH organic fertilizer on the growth of grapefruit 29 Table 4.3. Effect of DH organic fertilizer on the growth of orange 31

Table 4.4. Effects of organic fertilizer DHliễu on growth and development of guava shoots 33

Table 4.5. Effects of organic fertilizer DHliễu on growth and development of grapefruit shoots 35

Table 4.6 Effect of organic fertilizer DHliễu on growth and development of Vinh orange tree 36

Table 4.7. Effect of DH organic fertilizer on flowering time of guava trees... 38 Table 4.8. Effect of DH organic fertilizer on flowering time of grapefruit trees 39 Table 4.9. Effect of DH organic fertilizer on flowering time of Vinh orange trees 40

Table 4.10 Effect of DH organic fertilizer on fruit set rate of guava trees 40

Table 4.11 Effect of DH organic fertilizer on fruit set rate of Dien grapefruit tree

................................................................ ................................................................ .......................... 42

Table 4.12 Effect of DH organic fertilizer on fruit set rate of Vinh orange tree

................................................................ ................................................................ .......................... 43

Table 4.13. Study on the effects of DH organic fertilizer

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