AGEICULTURAL EXPEJII^ENT STATION. 



95 



The value of duplicating any experiment of this kind is well 

 shown by comparing tables VIII and IX. Table VIII gives data 

 which would apparently warrant drawing very positive conclusions 

 as to the relative merits of the different solutions ; while table IX 

 would appear to reverse the relative positions of solutions "B" 

 and "C," and even indicates that solution "B'' is of little if any 

 value. But by combining the data we approximate nearly the 

 true results. 



When Shall ive Spray? A part of the work in Mr. Pope's 

 orchard was conducted with a view to determining the best time 

 for applying fungicides, as well as the relative value of several 

 applications. To this end some trees were sprayed but once, 

 early in the season ; others were sprayed twice, some three times 

 and some four times ; while some trees were not sprayed. Solu- 

 tion "B" was used in every instance. 



The results of this trial are shown in table XI. 

 Table XI. 



No. times sprayed. 



c a 

 ^5 



03 



s 



•6 



03 

 O 



>^ 



To 



0) 



03 

 o 



Hi 



1 



It 



a 

 a) 



u 



Cm 



Per cent. No. 1 

 apples (as regards 

 scab). 



When sprayed. 





499 

 497 

 481 

 604 

 600 



13 

 1 



12 

 



4 



814 

 161 

 301 

 212 

 267 



172 



335 

 16S 

 392 

 329 



2.6 

 0.2 

 2.5 

 0.0 

 0.7 



65 6 

 32-6 

 65 1 

 35 1 

 45-2 



May 26. 





Average per tree . . 

 Twice 



536 



688 

 610 

 542 

 556 



6 







2 



26 







251 



287 

 314 

 355 

 237 



279 



401 

 294 

 161 

 319 



12 



0.0 

 0.3 



4.8 

 0.0 



48-7 



41-7 

 51 8 

 70-3 

 42.6 



May 26, June 23. 





Average per tree . . 



599 



583 

 617 

 6S4 

 485 



7 



30 

 38 

 27 

 36 



298 



439 

 455 

 432 

 360 



294 



114 



124 



225 



89 



1.3 



5.1 

 62 

 3.9 

 7.4 



51.6 



80-3 

 79.9 

 67.1 

 81-6 



May 26, June 23. 

 July 21. 





Average per tree . . 



592 



588 

 438 

 552 



526 



559 



7m7 

 462 



33 



21 

 45 



18 



421 



346 

 292 

 372 



138 



221 

 101 

 162 



5-6 



3-6 



10.3 



3.2 



77.2 



62. 4 

 76-9 

 70 6 



May 26, June 23, 

 July 21. Aug. 20. 





Average per tree . . 



28 



6 



7 

 25 



337 



315 



285 

 300 



161 



238 

 415 

 137 



5-7 



1.1 

 1.0 

 5.4 



70.0 



57-4 

 41.3 

 70.3 



June 23, July 21. 

 Aug. 20. 





Average per tree . . 



576 



13 



300 



263 



2-5 



56.3 





