1907 ENTOMOLOGICAL SOCIETY. 8! 



wash upon them. It is difficult to see how these insects could be injured by 

 the spray, yet some American Experimenters state that the wash does a 

 good deal to control the Codling worm. The only case that I know of which 

 would tend to show that the wash may greatly lessen the number of codling 

 worms was at Fruitland in one of Mr. Tweddle's orchards. For some cause 

 Mr. Tweddle sprayed about an acre of apple trees at one end of the orchard 

 and situated just at the base of the mountain; the rest of the orchard was not 

 sprayed with lime-sulphur, although both parts were sprayed with poisoned 

 Bordeaux mixture later in the season. When I went through the orchard 

 in September there were scarcely more than half as many wormy apples in 

 the sprayed as in the unsprayed part. Mr. Tweddle attributes this result 

 to the lime-sulphur. Possibly this was the case, but it would be necessary 

 to make sure first that the later spraying with poisoned Bordeaux mixture 

 had not been put on at exactly the proper time in this part and a little too 

 late in the rest. Mr. Tweddle intends to make further experiments on this 

 point next year. It is certain, however, that whatever benefit in this re- 

 spect may be obtained, the wash will not completely control the codling 

 worm; for in several orchards where it was used there was a very large pro- 

 portion, about 50 per cent., of wormy apples. 



Peach Leaf-Cfel. 



The evidence in proof of the lime-sulphur as a reliable preventive of 

 Peach Leaf-curl is practically overwhelming. If any one has any doubt 

 on the matter I refer him to such well known fruit-growers as Messrs. -T. 

 W. Smith, of Winona, Robert Thompson and W. H. Bunting, of St. Cath- 

 arines. These and many other successful fruit-growers can, from their 

 own experience, convince any man who is willing to be convinced. 



Gooseberry Mildew. 



It is well known that the chief difficulty in growing English gooseber- 

 ries in America is that they are very subject to attacks of mildew, which 

 practically destroys the leaves and fruit. Three years ago, almost by ac- 

 cident, Mr. Joseph Tweddle, of Frtiitland, sprayed his English gooseberry 

 bushes with lime-sulphur and was pleasantly surprised to find them com- 

 paratively' free from mildew that season. Next year, and again this vear, 

 he has used the same wash with the same good results. This year Mr. E. D. 

 Smith, of Winona, tried lime-sulphur on his bushes and agrees with Mr. 

 Tweddle in saying that so far as their experience has gone the lime-sul- 

 phur makes the growing of this class of gooseberries both possible and 

 profitable. Other fruit-growers in the Niagara district who have heard of 

 lliese results told me they intended trying the experiment next year. Should 

 these experiments turn out in the way it is expected no small benefit will 

 accrue to the fruit-growers of the province. 



Plum Rot. 



Very few plums rotted this year, hence the effect of the lime-sulphur 

 upon plum rot cannot to any appreciable extent be determined by this year's 

 experiments. The general consensus of opinion, however, among those who 

 liave used the wash on their plum trees for several years, is that it has con- 

 siderably lessened but not entirely prevented the disease. 



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