STATi; POMOLOGICAL SOCIETY. 53 



The weather at the time of the first application was most 

 favorable. The days were bright, mild and calm. Between 

 it and the second application no injury could be found on any 

 of the plots. 



The second application was interrupted and followed by 

 weather of the kind most favorable for the production of spray 

 injury according to previous experiences with bordeaux. Show- 

 ers interrupted and followed the spraying and the temperature 

 and humidity changes w^ere great and rather sharp. Cold, rainy 

 periods were followed by bright, hot. humid ones. If spray 

 injury were to be done, these were ideal weather conditions for 

 producing it. 



Observations made two to 15 days after the second spraying 

 showed a comparatively small amount of leaf injury on all the 

 sprayed plots except the self-boiled lime-sulphur. On those 

 least affected it was found only by the closest observation. On 

 others it was more readily seen, but on all the lime-sulphur plots 

 which were affected the injury was so slight as to be entirely 

 negligible as far as the general health and functions of the foli- 

 age were concerned. The foliage was spotted to a vastly lesser 

 degree than the bordeaux plots, and although the spots averaged 

 larger in size than those from bordeaux injury, the individual 

 leaves showed on an average fewer injured areas per leaf. The 

 application of the third spraying had no ill effects upon any of 

 the lime-sulphur plots. 



As the season advanced it was evident that so slight had been 

 the foliage injury from lime-sulphur, even in the most severe 

 cases, that to the general observer it passed unnoticed, and had 

 no noticeable eft"ects whatsoever upon the functions of the trees 

 in developing fruit or wood. The leaves developed well, were 

 thrifty and green and although scab could be found it did not 

 develop to any appreciable extent. No yellowing whatsoever 

 was seen on these trees, and the leaves remained on them until 

 long after the fruit was harvested. 



The self-boiled lime-sulphur plot suffered no leaf injury at 

 any time during the season. The foliage was notably thrifty 

 and green. On the other hand, leaves as w^ell as fruit seemed 

 to be considerably more affected with scab, showing that the 

 self-boiled preparation is not as eft'ective against this fungus as 

 the boiled sprays. 



