QUESTIONS 211 



It should be said in explanation of these fi^ires that the work 

 was done with great thorougluiess, as it was especially desired 

 not to let any of the scales escape. 



The same block of fifty-three trees was sprayed for codling 

 moth at the following cost: 



Time, Gy, hours (3 men and team) @ 871/2 cents (cost of labor) $5.69 



Materials 250 gal. spray (3 lbs. arsenate of lead to 50 gal.)= 15 lbs. 



arsenate of lead, @ 8 cents • • • .1.20 



Total cost $6.89 



Labor cost per tree 10% cents 



Material cost per tree 2% cents 



Total cost per tree 13 cents 



Total cost per barrel of api)Ies, about 4 cents 



A block of 1,487 four-year-old apple trees was sprayed for 

 San Jose scale at the following cost: 



Time, 41 hours (3 men and team) @ 871/3 cents (cost of labor) .. $35.88 

 Materials 720 gal. spray (Oil 1 to 12 == 551/3 gal., @ 35 cents) 19.43 



Total cost $55.31 



Labor cost per tree 2.41 cents 



Material cost per tree 1.30 cents 



Total cost per tree 3.71 cents 



QUESTIONS 



L ^^^lat can be done to make spraying convenient and comfortable? 



2. Discuss the importance of knowing why we spray. 



3. \Miy is it important to spray in time? 



4. Why is thorougliness especially important in spraying? 



5. In what sense may spraying be considered as an insurance? 



G. Under what circumstances is there likely to be danger to animals fiom 

 spraying? 



7. Outline the seasons spraying for apples and pears. 



8. How should plums and peaclies be sprayed? 



9. Discuss the cost of spraying. 



