CONTROL OF THE JAPANESE BEETLE ON FRUIT AND SHADE TREES 1 1 



GRAPES 



Bearing and nonbearing grapevines can be protected by spraying 

 thoroughly with 6 pounds of lead arsenate and 4 pounds of flour 

 in 100 gallons of water, or with 20 pounds of hydrated lime and 3 

 pounds of aluminum sulphate in 100 gallons of water. The Jap- 

 anese beetle does not feed on the fruit. The spray should be directed 

 downward from above to avoid excessive residue on the fruit at 

 the time of harvest, but every leaf should be covered. Where it is 

 the practice to use 8-12-100 bordeaux mixture 4 on the grapes the 

 latter part of June, lead arsenate without the flour may be added. 

 Additional applications of these sprays are usually necessary to 

 protect the new growth that develops after the first application. 



SMALL FRUITS 



As there is no satisfactory procedure for removing the spray 

 residue from raspberries, blackberries, and blueberries without 

 causing damage to the fruit, the bushes should not be sprayed until 

 after the crop is harvested. The lead arsenate and flour or the lime- 

 aluminum sulphate mixture may then be applied to protect the 

 foliage. 



SHADE TREES 



The foliage of shade trees that are subject to attack by the 

 Japanese beetle can be protected by spraying with 6 pounds of acid 

 lead arsenate and 4 pounds of wheat flour or V/ 2 pints of light- 

 pressed fish oil in 100 gallons of water. The lead arsenate spray, 

 being a stomach poison, may be of additional value in controlling 

 other leaf -feeding insects, but sometimes it is objectionable when 

 applied in close proximity to residences. In such cases the lime and 

 aluminum sulphate mixture is recommended. These spray residues 

 adhere well to the foliage, but it may be necessary to make a second 

 application 2 or 3 weeks after the initial treatment. 



WARNING 



Lead arsenate is poisonous to horses, cattle, and sheep. Animals 

 should not be permitted to graze on or beneath trees, shrubs, or vines 

 that have been sprayed with this material. 



4 Copper sulphate, 8 pounds ; hydrated lime, 12 pounds ; water, 100 gallons. 



