FORTY-SECOND ANNUAL REPORT. 51 



was wrong and of course, their spraying did but little good. I remem- 

 ber a season when we got the spray on the west side of some Mcintosh 

 trees, then waited for two days for the wind to be favorable for the 

 east side and there was scab on the one side while on the other there 

 was none at all. 



Question — Suppose we were having a rain storm at that time. Would 

 you go on and spray? 



Answer — Yes, just as soon as possible. 



Question — Is lime-sulphur a better fungicide with the arsenate of 



lead or without? 



Answer — Yes, it is, although I would not say it is much better. Arse- 

 nate of- lead has some fungicidal value in itself. 



Question — Is there any advantage in using Bordeaux mixture before 

 blossoms open instead of lime-sulphur? 



Answer — I could see no reason why such a practice should be fol- 

 lowed. Then too, russetting is just as apt to occur before the blossoms 

 open as after they fall. 



In a season where apple scab is so severe, I do not mean to say that 

 the ordinary number of four summer sprays will absolutely control 

 scab, because in the rainy weather a good deal of the spray will be 

 washed off or diluted. I do not know that it is always economical but 

 under such conditions, it is no doubt necessary to do more spraying in 

 order to completely control it. Perhaps make an extra application or 

 two. 



A Member — I have lost some snow apples. I got through spraying 

 for the codling moth as I supposed — my snow apples were perfectly 

 clean. It was not yet time to spray for the second crop and right in 

 them my snow apples scabbed up. I think if I had put in one more 

 spraying, I would have saved those snow apples. 



Answer — In other words, if you had kept the fruit covered you would 

 not have had the scab. 



A Member — What about spraying for the peach leaf curl? 



Answer — We have depended for a good many years upon Copper Sul- 

 phate solution, 2V 2 to 4 pounds Blue vitriol crystals dissolved in fifty 

 gallons of water to control peach leaf curl. This was applied before the 

 peach buds swelled and was used almost universally until San Jose 

 scale came into southwestern Michigan. The reputation of lime-sulphur 

 as a fungicide as well as an insecticide made orchardists there wonder if 

 they could not depend upon their spray for scale to control the curl 

 leaf also. It was demonstrated that a 15-25-50 formula, boiled and ap- 

 plied hot would do the work all right. Then the commercial lime-sul- 

 phur came and fruit growers used it for scale and found that that would 

 control the leaf curl if applied early enough in spring. Thus the 

 spray of copper sulphate for leaf curl was eliminated Avhere spraying 

 for scale was necessary. 



But Where spraying for scale was unnecessary, there has been con- 

 siderable discussion as to which was best, strong copper sulphate solu- 

 tion or Bordeaux mixture and whether a weaker mixture of commercial 

 lime-sulphur could be used satisfactorily or not. At the last meeting 

 of this Society and at many Farmers' Institutes through the state last 

 winter, speakers recommended Bordeaux mixture as the only spray 



