No. 6. DEPARTMENT OF AGRICULTURE. 401 



and otlic'i' plauls. It is tlie best thing for plant diseases that can 

 be reeonimen<led. if to tliat 50 gallons of Uoideanx mixture you\ 

 add four ounces of Paris green, yon have something that is eifective 

 for the chewing insects and for the jjlant diseases, for the codling 

 moth, etc., but it does not kill the class of insects that are sucto 

 rial. We have tried it for the blight on melons and it has worked 

 perfectly for that, but it is likely.to make a stain on the ripened fruit 

 like a thin, bluish white-wash. That can be overcome by using for 

 the last spraying a formula of a colorless remedy that I am giving 

 in the June bulletin of the Division of Zoology, which is being sent 

 out this week. It is the ammoniacal solution of copper carbonate. 

 This iS' a clear solution and does not leave a stain. For example, 

 take the brown rot of the peach. This must be met by an ai)pli- 

 cation just about the time the peach is ripening, and if we apply the 

 Bordeaux mixture at that time our fruit is so stained that it is not 

 marketable; but if we apply a stainless mixture, as described, we 

 have a fungicide or remedy for that disease that will not stain the 

 fruit and is effective. It is good for the cherry and other fruits that 

 may rot; the last spraying made should be the application of the 

 stainless solution. Another point is that when a man is spraying 

 for something like the apple scab, if Paris green is added, it will 

 also kill the codling moth and other chewing insect foes. 



A Member: How would you protect the roses from the rose bug? 



PROF. SURFACE: There is no man living that can give you an 

 effective remedy for the rose bug. It is recommended to spray with 

 whale oil soap, kerosene mixture, Bordeaux mixture, etc. Shake 

 them off into a cloth that is saturated with kerosene, or into an 

 open umbrella, and burn them. That is about he only thing that 

 can be done. They are poisoned so slowly that it takes two days 

 to kill them. 



A Member: What about the San Jos6 Scale? 



PROF. SURFACE : You who are raising fruit should be intensely 

 interested in this subject. If left alone it would cover this State 

 like leprosy. The San Jos6 Scale during this month of June, from 

 the 5th to 20th or later, is in a young and tender stage. It is then 

 we can make the summer applications, but applications made in 

 August or September would not avail. Use whale oil soap, one 

 pound to five gallons of water, from the 10th to the 25th of June, and 

 you will be able to hold the San Jose Scale in check until fall. Then 

 when the leaves are off the trees trim back as much as advisable 

 and then wash with a strong soap suds or spray with whale oil soap, 

 two pounds to one gallon of water (that is strong); or use the "lime, 

 sulphur and salt wash," to be described in one of our winter bul- 

 letins. 



26— 6— 19«8 



