16 



The combination may also be used for potato blight and bugs. 



Paris green may be used with water in the proportion of four 

 ounces to fifty gallons. A pound of fresh lime, or an equiva- 

 lent quantity of slaked (not air-slaked) lime added to it, will 

 lessen the danger of injury to foliage from its use. This answers 

 for canker worm. 



One of the most important points to be observed in the use 

 of mixtures containing Paris green, is to keep them thoroncjhly 

 stirred up. 



RECOMMENDATIONS 



Pear and Apple Scab. — Spray with Bordeaux mixture once 

 before the. blossoms open; again just after they have fallen, 

 and then a third time after ten days or two weeks. Rainy 

 weather may make a shorter interval and an additional spraying 

 advisable. ^ 



At the second and third sprayings Paris green or London 

 purple,, in the proportion of four ounces to fifty gallons, may 

 be added to the Bordeaux mixture for the codling moth. 



Potato Blight. — For the early blight spraying with Bordeaux 

 mixture should be begun by the middle of July, or sooner if the 

 characteristic brown spots of the disease make their appear- 

 ance. The spraying should be repeated twice, with an interval 

 of ten days or a fortnight. If the weather is rainy, the inter- 

 val between sprayings should be shortened and a fourth appli- 

 cation may be advisable. This treatment will serve for both the 

 early and the late blight. If it were known that only the late 

 blight was to be dealt with, the spraying might usually be de- 

 layed till the last of July. 



