10 MAINE AGRICULTURAL EXPERIMENT STATION. I912. 



Time; oe Application. 



The applications were made as aforesaid with the gas spray- 

 er at 100 to 125 lbs. pressure. The machine was thoroughly- 

 washed out between use on each plot. Friend, Mistry Jr. and 

 Scientific nozzles were used during the several sprayings, which 

 occurred on the following dates : 



ist. May 12 and 13. Flower buds half grown and showing 

 pink at tips. Leaves fairly well developed. 



2nd. May 30. After petals had fallen. 



3rd. July 7 and 8. 



Weather Conditions. 



In regard to absence of rain or excessive humidity, the con- 

 ditions for spra3ang were excellent. The season was one of 

 exceptional drought. No rain fell from about April i until 

 May 24. On May 29, one day preceding the second applica- 

 tion, there was a precipitation of .2 inches. On July 6, again 

 one day preceding the last application, .24 inches of rain fell. 



The first rain following the first application occurred 11 days 

 afterward ; following the second, 2 days thereafter, and 7 days 

 after the final spraying. The small amount of rain preceding 

 the last apphcation occurred during periods of high tempera- 

 ture. 



The third application was made during two days of a week 

 of exceptional heat; the relation of such extreme temperatures 

 to spraying and its effect on fruit will be discussed later. • 



The following table gives the rainfall from the beginning of 

 the record in April to the middle of the harvest. 



Table 3. 

 Precipitation at Highmoor Farm. April i-Octoher i, ipi2. 



Date. 



Inches. 



Date. 



Inches. 



Date. 



Inches. 



May 24 



.7 

 .2 

 .45 

 1.53 

 .18 

 .66 

 .07 

 .88 

 .03 

 .03 

 .24 

 .11 



July 17 



July 18 



July 20 



.05 

 .26 

 .18 

 .05 

 .62 

 2.25 , 

 .40 

 .04 

 .46 

 .36 

 .99 

 .30 



Aug. 28, 29 



Aug. 31 



.65 



May 29 



.17 





Sept. 6 



1.26 



June 12 



i July 22 



July 24 



July 28 



July 31 



Aug. 9 



Aug. 11 



Aug. 15 



Aug. 18, 19 



Aug. 26 



Sept. 9 



.14 





Sept. 12 



.02 





Sept. 22 



.47 





Sept. 25 



.52 



June 16 



Sept. 27 



Sept. 29 



Total 



.22 



June 26 



.65 



July 6 



15.14 



July 15 









