VINE CROP PROJECTS 163 



Mosaic or " White Pickle " is a disease which causes a dwarfing 

 and yellow mottling of the leaves and fruits. Infected plants 

 produce few if any fruits. Removing and destroying the diseased 

 plants as soon as they appear and dusting the patch with equal 

 parts of tobacco and lime or spraying with nicotine sulphate (1 

 teaspoonful to 1 gallon of water) to control the aphids will tend 

 to keep this disease from spreading. 



1. Why is the beetle so injwiov^ to young plants f CL : 110. 



2. Where do the larvae work? CL : 109-110. 



3. What is its life history? CL : 110-111. 



4. Describe three control practices. CL : 111-112. 



5. What other beetles affect the cucumber? CL : 113-115, 133. 



6. How is the bacterial wilt spread? SH : 182. 



7. What parts are attacked by anthracnose and what are the most 



characteristic symptoms ? SH : 180-181. 



8. How may mosaic be diagnosed in the field? What are the 



approved methods of combating it ? 



12. Harvesting and marketing. — Cucumbers should be har- 

 vested whenever they have attained a size wanted by your market. 

 Sometimes such a good price can be obtained for the very small 

 pickles that it does not pay to allow them to grow to any consid- 

 erable size. However, the early market generally wants large 

 cucumbers and good prices are paid for them, and the small 

 pickles are produced and sold later in the summer or perhaps in the 

 early fall. 



It pays to grade cucumbers and to pack them in clean, attractive 

 packages. They may be sold by the dozen, by the hundred, or 



