Residual Efficacy of Tephrosia Vogelii on Diamond-Back Moth Plutella xylostella L. (Lepidoptera: Plutellidae).

Table of Contents

Approvalii

Dedication iii

Acknowledgementiv

Acronymsv

Table of contentsvi

List of tablesv

List of figuresvi

Abstract vii

1.0.Introduction1

1.1. Background1

1.2. problem statement2

1.3. Objectives2

1.4. hypothesis2

Literature review3

Description of Tephrosia vogelii3

Uses of Tephrosia vogelii3

Insecticidal components of Tephrosia crude extracts3

Variation of Tephrosia vogelii chemistry4

Potential benefit of Tephrosia vogelii to the farmers4

3.0. Materials and Methods5

3.1. Site5

3.2. Plant materials5

3.3. Insect materials5

3.4 Plant extract5

3.5. Bioassay 6

3.6 Experiment laboratory design and layout6

3.7 Statistic analysis8

3.7.1. Statistical model88

4.0. Results and Discussions 9

4.1 Results9

4.2 Discussion12

5.0 Conclusion14

6.0 Recommendation14

7.0Reference 15

8.0 Appendices…………………………………………………………………………………. 18

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