100 N. H. AGR. EXPERIMENT STATION [Bulletin 143 



sprayed, averaging 235 per farm, excluding several large peach 

 orchards. 



3. Twenty-seven parties sprayed 6,102 trees in 75 orchards 

 for neighbors, averaging 81 trees per orchard. 



4. Practically all spray against the codling moth, giving one 

 or two sprayings in June. About one-third spray against the 

 brown-tail moth in August. Seventy per cent, spray also for 

 fungous diseases. A few spray for various other insects, par- 

 ticularly San Jose scale, as occasion arises. 



5. Out of 90 reporting, 48 per cent, spray but once, when the 

 blossoms drop ; 35 per cent, spray twice, 10 per cent, three times, 

 5 per cent, four times and 1 per cent, five times. 



6. Of 94 reporting, 65 per cent, use arsenate of lead and 10 

 per cent, use Paris green. Twenty-six per cent, use a manufac- 

 tured combination insecticide and fungicide, consisting of arse- 

 nate of lead and Bordeaux paste, while 45 per cent, use home- 

 made Bordeaux mixture applied with arsenate of lead or Paris 

 green. 



. 7. Nearly all use barrel pumps. Ten per cent, have their 

 spraying done. Two per cent, use knapsack or bucket sprayers. 

 Three per cent, use horizontal, double-action pumps of the Sen- 

 tinel type. One has a gas sprayer and three report gasoline 

 spraying outfits. 



8. Fifty-four parties give fairly definite figures as to cost, 

 which runs from 5 to 30 cents per tree, averaging 10 cents. 



9. But few were able to answer as to the profit received per 

 tree, as they had not considered this or made direct observations 

 upon it. Thirty-two parties give sufficiently definite figures 

 either as so much cash benefit per tree or in terms reduceable to 

 the same basis. These reported all the way from 75 cents to 

 10 dollars per tree profit, and average $2.50 per tree. ]\Iany 

 reported the benefit in proportion of number one and number 

 two fruit on sprayed and unsprayed trees, which amounted to an 

 average difference of 40 per cent. No. 1 fruit more on the 

 sprayed trees. With three barrels of fruit per tree, at $2 per 

 barrel, this would amount to $2.40, or practically the same as 

 given above. Five per cent, of the picked fruit was imperfect 

 on the sprayed trees. Further comparisons as to the benefit are 

 given below. 



After a study of these replies we were interested to make an 

 estimate of just how much profit those New Hampshire fruit 

 growers who have sprayed the last season have secured l)y it. 

 Ninety-five reporting had 22,305 trees. If two-thirds of these 

 bore fruit (usually only those bearing are sprayed), there would 

 have been 14,870 sprayed, which at a profit of $2.50 per tree, 

 would give $37,425 profit ; 6,102 trees for 75 neighbors were also 



