SPRAYING THE APPLE ORCHARD. 27 



Mork are usually not to be relied upon until they have 

 been repeated for two or three years so that there can be 

 no doubt as to the uniformity of the results. The experi- 

 ments will therefore be repeated one or two years more, 

 when a complete and detailed report of the whole work and 

 definite recommendations based upon it will be published. 

 But as a demonstration of the general profit of sprayings 

 with the methods usually employed, the work was a com- 

 plete success and merely confiraned the results secured by 

 hundreds of experimenters and practical fruit growers 

 throughout the country, and demonstrates that spraying^ 

 pays in New^ Hampshire as well as elsewhere. 



In all these experiments the trees were sprayed in prac- 

 tically the same way as described below (pages 47-52), each 

 being given two sprayings with arsenate of lead or Paris 

 green and Bordeaux mixture, just after the blossoms 

 dropped and again a week later. All of the windfall fruit 

 was picked up from under each tree and a record made as 

 to whether it was wormy or not and a similar record was 

 kept of the picked fruit. Thus it was possible to know the 

 exact number of fruits w'hich each tree bore during the sea- 

 son, what proportion dropped and how many of both 

 dropped and picked fruit were injured by the codling 

 moth. Altogether over half a million apples were thus 

 examined and recorded. 



To render the results of this work more readily under- 

 stood, we have had prepared the accompanying figures, 

 which show the amount of fruit on both sprayed and un- 

 sprayed trees in each locality, with the proportion on the 

 trees when picked, the amount which had dropped and the 

 part of each which was wormy. The estimates of the value of 

 the spraying are secured from the value of the picked 

 fruit which was not wormy. The amount of picked fruit 

 not wormy was secured by multiplying the total average 

 number of fruits per tree by the percentage of the total 

 crop which was not wormy and picked. Six hundred ap- 

 ples were considered a barrel, as this was the average for 



