CONTROL OF GARDEN DISEASES AND INSECTS. 



prepared at home from bliiestone (copper sulphate), which costs 10 

 to 25 cents per pound, and fresh stone or hnnp lime (quicklime). 



Bluestone oiuices__ 4 



Quicklime do 4 



Water quarts__ 1- 



Dissolve the bluestone in a 

 wooden or earthenware vessel, 

 using hot water. Dilute with 

 half the water. Do not use tin 

 or other metal containers, as 

 they would be spoiled. Slake 

 the lime by adding water, a 

 little at a time. When reduced 

 to a milky fluid, dilute with the 

 rest of the water and strain 

 through doubled cheesecloth or 

 a brass wire strainer of 18 

 meshes per inch and pour into 

 it the bluestone solution. Stir 

 well and apply at once. This 

 is best when prepared fresh foi' 

 each using. 



■"^Jsually it is difficult to get 

 fresh lime at short notice, as 

 needed. To save trouble, the 

 owner of a small garden may Aveigh out at one 

 time several 4-ounce lots of lime, perhaps as 

 many as he expects to use during the summer, 

 slake them in old glass jars, cover with water, 

 and set them away. The lime will remain in 

 good condition as long as it does not become 

 dry, and each jar is sufficient to use in mak- 

 ing a pailful of Bordeaux mixture, or one 

 filling of the average small sprayer. Those 

 who have to spray large fields or orchards 

 should consult Farmers' Bulletin 243. 



BORDEAUX MIXTURE WITH RESIN FISH-OIL SOAP. 



Eesin fish-oil soap is added to the Bordeaux 

 mixture to make it stick to plants, especially 

 those with smooth leaves. 



Add to the foregoing formula resin fish-oil 

 soap, two-thirds of an ounce to 1 ounce per 

 gallon. It is necessary to add Avater to the 

 soap a few drops at a time, stirring well until 



Bluestone pounds^. 4 



Quicklime do 4 



Water 2;;illoiis__ oO 



/ 



Fui. 4. — Bhuk-i-ot on sweet 

 potato. I'lants showing 

 blackened discoloiatious 

 on the underground parts 

 should be discarded. , 



