16 



We can now recognize early stages of yellows and little 

 peach and we know that they are sometimes distributed by 

 the nurseries. 



The New Jersey station is trying to co-operate with the 

 nurserymen and is helping them to secure buds free from 

 disease as far as science can determine this. 



The individual trees in the State experiment orchards 

 are under close observation at all times. Last summer the 

 station offered to supply buds to nurserymen from trees in 

 the experiment orchard which were Icnown to be healthy. 

 Only a limited number of buds could be supplied to each 

 nurseryman, but this was sufficient to provide stock from 

 wliich to propagate in the future. Over 30,000 buds were 

 distributed upon request. 



My talk has been a somewhat general one and it may be 

 that I have failed to go into detail sufficiently. If so, I shall 

 be glad to attempt to answer any questions which anyone 

 may have ta ask. 



THE PRESIDENT. I think you will agree that Profes- 

 sor Blake knows his subject, and I hope you will feel free to 

 ask all the questions you wish. We want to make this a 

 very informal meeting. Are there any questions? 



I\IR. R. W. REES. I would like to ask what form of 

 nitrogen has proven the most satisfactory. 



PROFESSOR BLAKE. I will say that we have used 

 nitrate of soda in all our experiments. I think there is a 

 question as to which is the most economical to buy, but if 

 you use chemical fertilizers entirely, you need plenty of 

 organic matter in the soil. If the soil is deficient in organic 

 matter, you can't get the best results with chemical ferti- 

 lizers, and if you can't get organic matter by means of a 

 cover crop, it will have to be secured in some other way. 



MR. W. D. ROSS. In regard to Tanglefoot on ^ the 

 bark, I would like to ask the Professor whether he knows 

 of experiments by putting on paper, and then putting the 

 Tanglefoot on the paper, and whether that would be any 

 protection to the bark. 



PROFESSOR BLAKE. It might be possible to put on 

 something that would prevent the injurious material in the 

 Tanglefoot from going into the bark, but we haven't made 



