147 



$1000 or $1500 invested in the pear psylla (laughter), and I 

 would like to have something said about that. 



THE PRESIDENT: We paid our respects to the pear 

 psjdla yesterday. If you weren't here, you will get that in 

 the report. 



:\IR. CUNNINGHAM: AVould lime-sulfur for the scale 

 kill the aphis without the additional tobacco ? 



PROF. FARLEY : It might kill some of them, but I don't 

 think your control would be as complete as it would if you 

 added tobacco. 



MR. STOCKWELL: How much tobacco? 



PROF. FARLEY : We use half a pint to 50 gallons. 



J\IR. WARE: In what part of the tree do you find the 

 aphis eggs? 



PROF. FARLEY: On the buds and young twigs. We 

 find the aphis crawling around on the cluster cup when the 

 leaves open up. 



THE PRESIDENT: In the winter you wouldn't find 

 many on the older growth. 



PROF. PARLEY : No. Out on the tips or on the buds. 



3IR. STOCKAVELL : I would like the speaker to warrant 

 me that if I put half a pint of Black-Leaf-lO in 50 gallons of 

 v:ater. with 1 to 9 lime-sulfur, that it will do the business. 



PROF. FARLEY : I will write that out if you want it. 

 It will kill the aphis if you put it where the aphis is located 

 The material Avill kill every aphis that it hits, no doubt about 

 that, but you may not hit all of them. 



MR. STOCKAVELL : The aphis, or the eggs? 



PROF. FARLEY : The aphis. 



MR. STOCKAVELL : Or both ? 



PROF. FARLEA^ The aphis, the development after the 

 egg. Every one of those that you hit with that material will 

 be killed. 



THE PRESIDENT : I think Air. Stockwell is confusing 

 the question of the aphis after it is hatched, and before. I 

 am very doubtful about* the effect of winter spraying. In 

 my opinion, you have to wait until after it is hatched before 



