524 



Repoet of Faemees' Institutes 



Insects 



92. Describe the rose chafer? 



93. What is the life history of the rose chafer? 



94. What is the best method of controlling the rose chafer? 



95. What effect has the environment of a vineyard on the severity of 



rose chafer attack? 



96. What is the life history of the steely beetle? 



97. What is the best method of controlling the steely beetle? 



98. What surroundings are most favorable for attack by steely beetle? 



99. What is the life history of the grape root- worm? 



100. What is the best method of controlling the grape root-worm? 



101. Why do the number of grape root-worms fluctuate so markedly 



certain years? 

 ■102. What is the cause and remedy for "wormy" grapes? 



103. Give the life history of the grape-berry moth ? 



104. Why are there usually more wormy grapes near woodland or waste 



land? 



105. Give the life history of the grape leaf hopper? 



106. What is the best remedy for the grape leaf hopper? 



107. What effect have overwintering weeds and grass upon the grape leaf 



hopper ? 



108. Will cover crops cause vineyards to be more severely attacked by 



leaf hoppers? 

 Spraying 



109. Give directions for the annual spraying of a vineyard that will keep 



the grapes in the healthiest state and yet be of minimum expense. 



110. Is powdered arsenate of lead better than the paste form? 



111. Is arsenite of zinc a safe insecticide for grapes? 



112. What do you know about Kiltone? 



113. What is the best fungicide for grapes? 



114. How should bordeaux mixture be prepared? 



115. Can soluble sulphur or lime-sulphur be used on grapes? 



116. What is the best type of sprayer for vineyards? 



117. What are the essentials of good spraying? 



NEW MATTER ON BACKS OF PROGRAMS 



FACTS WORTH REMEMBERING 

 An inch of rainfall means 3,630 cubic feet per acre, or 101.1 tons. 

 A 3-in. pipe will discharge, under pressure, 100 gals, of water per minute. 

 Nominal horse power required for a 10-ft. lift— 1. 



Carrying Capacity of Pipes, Gallons Per Minute 



