STATE POMOLOGICAL SOCIETY. 49 



Ques. Is 150 pounds a satisfactory pressure? 



Ans. It is, for the large Friend nozzle that we commonly 

 use; 150 pounds is necessary to produce the fog that is needed. 

 Two hundred pounds will work all right, but anything under 

 150 does not give the fine spray that is really desirable. 



Ques. With good sized trees, how many would you cover 

 with 100 gallons? 



Ans. We find that trees 40 years old, large trees, that haven't 

 been trimmed and trimmed, require six or eight or even ten 

 gallons per tree. It takes a lot of the spray to cover them satis- 

 factorily. 



Ques. How long does it take to put out 200 gallons ? 



Ans. It took us 30 minutes — seven minutes to fill and 30 

 minutes to empty. 



Ques. What kind of sulphur do you use in the dusting 

 process ? 



Ans. A brimstone ground exceedingly fine, so 90% of the 

 sulphur would pass through the 200 mesh to the inch. In 

 other words, it is finer than can be bought ordinarily. It is a 

 preparation that can be manufactured if there is a demand for 

 it. 



Ques. If the spores winter on the limbs, would the spray- 

 ing with lime-sulphur prevent those spores from developing? 



Ans. I rather question it. We didn't seem to get that efifect. 



Ques. We understand that Bordeaux stays on better than 

 lime-sulphur ? 



Ans. Yes. The only reason I wouldn't spray with Bordeaux 

 is, about three times out of five we get so much Bordeaux injury 

 the apple looks worse than as though it had the scab on it. 



Ques. You get lime-sulphur injury? 



Ans. Very little. Lime-sulphur injury with us is largely a 

 question of burning through the leaf where the skin has been 

 lifted up and the spray gets down in. 



Ques. Do you think climatic conditions have anything to 

 do with injury by spray? 



Ans. They do unquestionably with Bordeaux mixture, but 

 with lime-sulphur I do not know. We get some rather conflict- 

 ing results there. The hme-sulphur we certainly can use on 

 apples. It is decidedly preferable to Bordeaux mixture. 



