58 STATE POMOLOGICAL SOCIETY. 



reputation on the results of one year's work. This much may 

 be said : The results obtained are encouraging, and, taken into 

 consideration with those of former experiments at other sta- 

 tions, point to the future solution of our spraying difficulties 

 along the lines being worked upon. The use of lime-sulphur 

 to date appears to be attended by desirable results as great as, 

 and by undesirable results somewhat less than, those following 

 the use of bordeaux, even under conditions making for spray 

 injury. Whether such injury will ever be totally avoided with 

 any spray when the atmospheric conditions at the time of use 

 are unfavorable is a question that remains at present unan- 

 swered. 



There are many questions still waiting to be solved in con- 

 nection with this problem. One of these is variation in sus- 

 ceptibility to injury of different varieties. In this phase of the 

 work the Station is handicapped by the fact that our orchards 

 are practically confined at present to one variety for experi- 

 mental purposes. We have no means of testing the effects of 

 lime-sulphur upon different varieties, and this should be done. 

 We know that there is a great difference in susceptibility to 

 bordeaux injury: we must know more about it in relation to 

 these newer sprays. It is greatly desired that some of you 

 men interested in advancing horticultural knowledge co-operate 

 with us by using lime-sulphur on small blocks of one or two 

 different varieties, spraying thoroughly and noting carefully 

 the effect upon foliage and fruit, both as to fungus control and 

 possible injury. We should be glad to hear from members of 

 this society who are willing to undertake such a piece of work 

 and to follow our directions. 



There are other questions to be solved. One is the minimum 

 strength of spray that will be effective. Another concerns 

 the chemical nature of the lead arsenate that is best to use 

 in conjunction with the fungicide. These are some of the 

 points which v^^e hope to attack in the future. For the present 

 \vc would say lime sulphur is worthy of a trial, but the end of 

 the knowledge regarding it will only come from such trials. 



HOME MADE vs. COMMERCIAL EIME-SULPHUR. 



In conclusion let me say a word relative to home made vs. 

 commercial lime-sulphur preparations. 



