ABSTRACT

A primary data generated from a trial carried out by a small farm site at NRCRI Umudike was used to investigate the effect of different levels of NPK 20 : 10 : 10 on sweet potato root yield. The significance of the treatments was investigated using ANOVA and test of multiple comparisons were used to sharpen the results obtained. From the analysis, the treatments were found to be significant. The results showed that sweet potato gave a higher yield when fertilizer was applied at a moderate quantity.

TABLE OF CONTENTS

PAGE

TITLE PAGE

CERTIFICATION ;;;

DEDICATION

ACKNOWLEDGEMENT

ABSTRACT

TABLE OF CONTENT vi

LISTOFTABLES ;;; vii

1.0. Introduction ;;; ;;; ;;; 1

1.1. Background of Study ,,, 1

1.2. Statement of Research Problem ;;; ;;; ;;; 3

1.3. Rationale for Study ;;; ;;; 4

1.4. Objectives ;;; ;;; ;;; ;;; ... 5

1.5. ScopeofStudy ;;; ;;; 5

1.6. Literature Review ;;; 6

1.7.0. Data Source and Limitation ;;; ... 7

1.7.1. Method of Analysis ;;; ;;; ;;; 9

1.7.2. Analysis of Variance (in CRD) ;;; ;;; 10

1.7.3. Multiple Comparison ;;; ;;; 11

1.7.4. Tests of Assumptions ;;; 13

1.8. Definition of Concepts ;;; ... 14

1.9. Organization of Chapters ;;; ;;; ;;; ;;; 15

2.0. Data Evaluation 16

2.1. Test for Normality ;;; 16

2.2 Test for Constant Variance;;; 18

3.0. Estimation and Tests of Significance of Treatment Effects 20

3.1. Estimation of Levels Effects 20

3.2. Tests of Significance 21

3.3. Multiple Comparison 22

4.1. Summary 25

4.2. Recommendations and Conclusions 26

References 28

Appendices. ;;, ;;; ;;;