xii Contents 



CHAFrER XIII 



PAGES 



Pests and diseases 184-204 



Insect pests 184 



Extent of pest injury, 184 



Preventive measures for controlling pests, 185 



Blister-beetles, 187 



Army worms, 187 



The commx)n army-worm, 188 



The fall army-worm, 189 



Sugar-beet ivebworm, 190 



Cutworms, 190 



White grubs, 191 



Wireworms, 192 



Flea-beetles and leaf-beetles, 193 



Grasshoppers, 193 



Beet-root aphis, 194 



Sugar-beet nematode, 195 



r^€ 6ec< leafhopper, 197 



Disease injury . 198 



Leaf-spot, 199 

 HeaH-rot, 200 

 Sca6, 201 

 So/f-ro^ 202 

 Beet-rust, 202 

 Rhizoctonia, 203 

 Sugar-beet mosaic, 203 

 Damping-off, 204 



CHAPTER XIV 



Factors affecting quality of beets .... 205-212 



'What are good beets 205 



Conditions producing good beets 208 



