320 BOARD OF AGRICULTURE. 



fall to the ground and are wormy in spite of anything we can do. The 

 only construction we can put upon that is that the moths that hatch in 

 the adjoining orchards deposit their eggs on these apples, and in that 

 way the man who sprays suffers for tlie neglect of his neighbor. 



Professsor Latta: Another lesson in co-operation. 



Professor Webster: If we can only get so we can do it. . 



President Hobbs: How strong a solution can you use on the apple, 

 say, when you spray for cankerworm? 



Professor Webster: We have got to the point where Paris green is a 

 little too much. I suppose we could use six ounces, instead of four, to 

 fifty gallons of water, if we used lime with it; that is, if the Paris green 

 is as it is supposed to be. I do not remember that we have ever tried 

 to use more than that. 



President Hobbs: You linow originally the farmer was to put one- 

 fourth of a pound to fifty gallons of water; he increased it to one pound. 



Professor Webster: Do you find that effective as against canker- 

 worm ? 



President Hobbs: Yes; if it is applied properly. 



Member: I used to spray for plums several years ago, and it did not 

 do any good at all. Then I made the mixture stronger and it destroyed 

 both the leaves and the plums, and I thought it was going to destroy 

 most of my little trees. I used about five tablespoonfuls of Paris green 

 to one gallon of water. I killed the plant lice, and I nearly killed my 

 little plum trees. However, they revived and are now growing. I would 

 like to know what the proper thing is to spray with for plums. 



Professor Webster: It is a wonder you did not kill all of your trees 

 to use Paris gxeen in proportions like that. I think Professor Goff an- 

 swered the question this forenoon better than I can, in spraying for 

 curculio. Do not wait until the plum has started. The insect hides away 

 on the ground in the leaves over wiutei-, and does not lay any eggs until 

 spring. Just as soon as the first warm days come in the spring they get 

 on the buds and feed on the new buds and twigs. If you will spray just 

 as the buds are beginning to come out you will kill a good many of the 

 curculio. You will kill, I think, more at that time, than at any other 

 time. So I would say, so far as that is concerned, to use the spray before 

 the blooming, and you can spray afterwards, too; but you will find you 

 get a good deal more good from the first spraying than any other. As 

 to spraying for leaf-louse, I think Professor Goff told you, you would 

 have no trouble, then, if the tree is in good thrifty condition. We have 



