February, '16] 



GOODWIN: GRAPE BERRY WORM 



101 



Dover Experiments — 1914 



* Sprayed with power machines. 



In the Dover experiments each cooperator did all of the spraying 

 in his vineyards, the author only giving directions when to make the 

 applications and what to use. 



The sprayings were made with whatever type of machine the coop- 

 erator could afford to purchase or the machine he already owned. 



In some cases the applications were made at times when they were 



^of little value, and others used inadequate and inefficient machines. 



The results show the value of proper spraying, as some of the coopera- 



tors w^ho obtained the best results had the worst infestations of berry 



worm to fight. 



Some striking results were often side by side, among them being the 

 extremes of worminess in the berry worm control work; from full foliage 

 to no foliage on Delawares on September 23 where the 2-3-50 Bor- 

 deaux held downy mildew in check, while arsenate of lead alone did 

 not do SO; and the fruit on the defoliated section did not ripen well. 

 A few examples of spraying with 4-4-50 Bordeaux were found and the 

 stunted cane growth and reduced amount of foliage w^ere very notice- 



