159 



Use considerable pressure because the pressure is a very 

 important factor. 



Quest. With a barrel pump how much pressure would 

 you get? 



That depends on the make of the pump and the man be- 

 hind it. 75 to 100 poimds. 



Quest. Have you ever had any results from the use of 

 Scalecide for the San Jose scale? 



I have known of some fruit growers who have made ap- 

 plication of it and got good results. 



Quest. Should the wash be applied very soon after it 

 is boiled? 



There is no necessity of putting it on hot. Dilute with 

 cold water and go about your spraying. Keep it warm. 



Quest. Is it necessary to keep it away from the air? 



It is advisable. This can be done with a covering of 

 oil. Put into a tight vessel. 



Quest. What do you think of using potash in the water, 

 and would you use it instead of scraping? 



I don't believe it would hurt the tree and it might re- 

 lease the coarse bark, but I would rather spend my time 

 spraying with lime-sulfur wash. Mr. Cornell says he has 

 had much better results where he has scraped the bark off 

 the trees before spraying. 



Quest. Is there any danger of scale spreading by cut- 

 ting off branches in the winter and letting them stay on the 

 ground ? 



— No; but don't do it in the suniDier. 



Quest. AVhy are plantlice more abundant some seasons 

 than others? 



If you have every indication of a severe Aphis outbreak, 

 it is mostly a question of temperature. 



Quest. Is there any advantage in spraying twice for 

 the scale, spring and fall? 



Spray twice in the spring. 



Quest. Does the San Jose scale eat during the winter? 



With badly infested trees it may pay to make an appli- 

 cation in the fall, because if the scale does live through the 

 winter, it lives at the expense of something, so make a fall 

 application. 



Quest. Have you had any experience in using lime-sul- 

 fur in place of Bordeaux mixture, 



The experience of practical fruit growers is this: They 



