8o STATE POMOLOGICAL SOCIETY. 



Prof. Blair : Yes, we used soluble sulphur this year in some 

 of our experimental plots. We had a considerable burning on 

 some of the plots. We used it just a little stronger than it is 

 recommended, to find out just the effect on the foliage if farm- 

 ers should use a little too much, and we had a little burnmg. 

 We did that for the purpose of pointing out the desirability of 

 using every care in the handling of this material. You can 

 liowever, use Barium Chloride which, if mixed with the soluble 

 sulphur spray, will to a very large extent do away with this 

 possible injury. We did not get as good control of scab, but 

 that might have been due to the fact that our tests were not 

 complete enough. 



Question : How much do you put on ? 



Prof. Blair: We try to get the foliage covered. If you are 

 using a pump with considerable force such as the Bean pump, 

 you are bound to get considerable drip ; with the Air-tight or 

 Pittsburg you can give your trees a nice coating without much 

 drip. 



Question: What are your results, whether the trees drip or 

 not? 



Prof. Blair : I am sorry to say that we have no data on that. 

 A lot of our fruit growers think that unless they get the trees 

 to drip they do not get an even application. I don't see how it 

 is possible to spray a tree with the average spray pump with- 

 out getting a very heavy dripping. 



Question : Doesn't it run to the point of the leaves where it 

 drips ? 



Prof. Blair : It is bound to. You cannot avoid that ; I do not 

 know of any way to avoid it, except with your mist spray. 



Question: How heavy pressure do you use? 



Prof. Blair : Two hundred to two hundred and twenty-five. 

 With the Bean pump, 225 lbs. or, with the air-tight steel tank 

 Pittsburg pump, we run about 85 lbs. We have been using the 

 Pittsburg pump in some of our experimental work this last 

 year. 



Question : In this control of scab, do you take into consid- 

 eration a rain storm? Would you spray just before a storm 

 if you knew it was coming on? 



Prof. Blair: Spray just after a rain. If it rains and washes 

 the spray off we do it again. It is hardly safe to run your 



