INSECT AND DISEASE CONTROL 



89 



family orchard it will probably not pay to get a gasolene power- 

 spraying outfit, even though the engine may be disconnected and 

 used for other purposes such as sawing wood, churning, making ice 

 cream and as a substitute for the hand that rules the world via the 

 cradle. 



Such materials as 

 arsenate of lead, Paris 

 green, hellebore, and 

 nicotine preparations 

 must be bought. Cer- 

 tain others, such as 

 lime-sulphur wash, 

 may he purchased or 

 made at home. This 

 stuff is, however, so 

 unpleasant to make 

 that it had better be 

 bought. 



There are many 

 brands. They should 

 be bought and used 

 upon the basis of 

 specific gravity. Bor- 

 deaux should always 

 be made at home be- 

 cause it is simple to 

 prepare and is more 

 effective when freshly 

 mixed. Kerosene 



emulsion may as well Rg 7Q _ An extension rod makes ^ bucket pump 

 be made at home as serve for tree spray i ng 



the process is simple 



and there is little danger of making a mistake. There are many pro- 

 prietary preparations, such as Scalecide, Pyrox, Sulphocide, many of 

 which justify the claims of their makers. 



POISON SPRAYS FOR BITING INSECTS 



Arsenate of Lead. Two forms, paste and powder differing in 

 composition, the former preferable, better than Paris green as it does 

 not usually injure foliage and sticks well and long As the com- 

 mercial brands vary in strength, apply according to manufacturer's 

 directions as to quantity. 



