WINTER SPRAYING FOR NURSERY AND ORCHARD. 73 



t'heir trees. One man may do it properly, and another may not and 

 he says this spraying is of no value to him. I think we ought to be 

 careful in adopting remedies that are good for each particular con- 

 dition though t'hey may not be good for another condition. 



I thought I heard some one ask a question about nozzles. In the 

 use of salt and sulphur I have found the Bordeaux nozzle very 

 good. Of course, it is understood that you strain the solution, what- 

 ever it is, before you put it in the barrel, and not through burlap, but 

 through a copper or brass strainer. If you strain it tlirough burlap 

 the nozzle becomes clogged with fragments of lint. You can 

 reverse this nozzle, and it will force the obstruction out. It is the 

 best nozzle for applying lime, sulphur and salt or Bordeaux that I 

 know of. 



Mr. Merritt : Don't you think sulphate of copper will answer 

 every purpose? 



Prof. Washburn : That is very good. Some of you have done 

 practical work with it and with a number of other things. 



Mr. Taylor : Where you whitewash trees witli lime and sulphur 

 vvould not that be a good remed}- ? 



Prof. Washburn : That is all right if you can cover the whole 

 tree, but you cannot cover the finer twigs with it, nothing but the 

 trunk of the tree. 



The Chairman : Will it kill the bark louse? 



Prof. Washburn : Yes, it will do that. 



Mr. Frank Berry : I notice the Bordeaux mixture is advertised 

 as a dr\^ mixture, is it any good? 



Prof. Washburn : The dry Bordeaux seems to be a good thing. 

 I do not think you can apply the dust spray to as good advantage as 

 you can the liquid spray. I have in mind the nursery of Fred. Mohl, 

 at Adrian, w^here he used the dry Bordeaux thoroughly last year, 

 and this year it is entirely free from the leaf hopper and free from 

 lice, and it is one of the cleanest nurseries I have been in. He has 

 used that method of spraying and is thoroughly convinced of it's 

 effectiveness so far as its use against those insect pests is concerned. 



Mr. Tanner: Is that the only kmd of dry dust spray they use? 



Prof. W^ashburn : There is on the market another formula which 

 they claim is as- good as any mixture, but I do not believe it has a 

 very great sale. 



Mr. Kellogg (Wis.) : Is it not' better to apply the dry dust when 

 the dew is on in the morning? 



Mr. Elliot : It can be applied in the evening. 



Prof. Washburn : It has to be applied when there is moisture 

 on the foliage. 



Mr. Elliot: I have applied it both morning and evening. 



Prof. Washburn : Do vou like the drv Bordeaux ? 



Mr. Elliot : Yes, I do.^ 



Prof. Washburn : What kind of sprayer do you use ? 



Mr. Elliot : ' Kansas Citv cyclone. 



Prof. Washburn: The large one? 



Mr. Elliot: Both, the large one and the small one. 



Mr. J. O. Weld : It seems to me in order t'o have spraying be- 



