ILLUSTRATIONS 



FIG. 



i. Bacteria ...... 



2. Structure of Fungi .... 



3. Nitre-Sick Beet Field, Showing Barren 



Spots ...... 



4. Effect of Lime .... 



5. Pythium deBaryanum 



6. Rhizoctonia ..... 



7. Fusarium Wilt .... 



8. Nematode Root Knot 



9. Inverted Pan for Steam Sterilization 



10. Surface Watering, Showing Portable 



Spray Equipment Used in Gardens about 

 Cold Frames and Hotbeds 



11. Watermelon Slice Showing Hail Injury 



12. Lightning Injury in Potato Field. 



Drought Injury of Sweet Corn 



13. Malnutrition, Showing a Cabbage Leaf 



Affected by the Disease 



14. Blossom Drop 



PAGH 



4 

 11 



25 



27 



43 

 45 

 47 

 49 

 55 



55 

 74 



78 



81 

 83 



xxiii 



