134 STATE HORTICULTURAL SOCIETY. 



enough to control the situation, nor to have any appreciable effect on it. 

 It is useless to try and consider the spreading of these parasites, because 

 of the parasites that prey on them — secondary parasites they are called. 

 Vou might work a j)ositive injury here in Michigan and hinder some of 

 our best friends in doing their best work. There is nothing in it at all. 



It seems that they did the same tiling in Massachusetts last year, and . 

 they find the situation about like ours. We can just as well drop the 

 l»arasite business and go ahead with the old sj'stem. 



Q. Do you think spraying in the spring is successful? 



A. I would rather spray twice in the spring than in the spring and 

 also in the fall. Use a marker when you spray the first time and then 

 go over the ground carefully' the second time a little later. 



What do you mean by a marker? What is it? 



A. Slacked lime mixed with the spray, so that you can see just where 

 vou hit. 



Q. Does it lessen the value of the spray? 



A. Not at all, on the other hand, I think it makes it a little more 

 effective. In the laboratory we find a little increase in the readiness with 

 which it works. 



Q. What kind of lime do you use for that? 



A. Slaked lime. 



Q. Would hj^drated lime do? 



A. Yes, sir. 



Q. Would powdered lime-sulphur be alright? 



A. Yes. If any of you have greenhouses and are troubled with Leaf 

 Curlers, take a little powdered arsenate of lead and dust that on through 

 a piece of cloth, and you will stop their work in one night. You can 

 use it in lots of i^laces. It is safer than Paris green and just as effective 

 in every way. 



Q. Would you advise using it for green cut-worms? 



A. Use Paris green for that, it would cost much less. 



Q. Would lime and sulphur have any effect on the little red spiders? 



A. I don't know, I don't have much faith in it. I would rather use 

 nicotine. We have kei)t them off from cotton plants in this way. 



Another creature that came this year, was a moth that dug holes in 

 the peaches and started them to rot. It was a ver-y pretty moth, in fact 

 you'd almost like it if it wasn't for what it does to the fruit. Central 

 America is its home and some seasons it gets crowded and starts north. 

 It has quite often gotten as far as the cotton states, but this is tlie first 

 year that it has come as far as this section in time to do injury. It has 

 come up as far as Ohio once before, but never as far as Michigan until 

 this year. We may never have it to deal with again, let us hope so at 

 least. The control was a troublesome thing with me and I only hope 

 that we won't have them to bother us again during this generation. We 

 found that they were attracted by light, so we put a tub partially filled 

 with water, with kerosene on top, and a lantern setting in it, hoping 

 that they would be attracted to the light and fall in the kei-osene, but it 

 was only a partial success. I couldn't recommend it very highly as a 

 method of fighting these pests, should they come another year. 



Q. Did those particular moths come clear from Central America? 

 A. No, they came up through five or six or seven generations, each 

 one flying up a part of the way. 



