lectively. Of course, I do not
advocate where a man has enough to have use for a spray machine for his
own orchard that he get one collectively. That would be a great mistake,
but where a man has only fifty trees in a neighborhood where there are
no big orchards, it would be better for a dozen or more to combine. If
you can get around with it in a week you will be all right but not
longer than that.

Mr. Richardson: I beg to differ with you just the same. I think if you
want to spray you must spray at the time; it might rain the next day,
and you might miss the whole season.

Mr. Dunlap: There are a good many people who don't like to go to the
expense of a spray machine just for fifty trees or 100 trees. If they
would combine with a few neighbors they would do some spraying work,
otherwise they wouldn't do any at all. If a man will buy a machine and
do his own spraying, why, that is certainly the best thing to do, but if
he won't do that it is better to combine with his neighbors and do it
than for none of them to do it. Community spraying is the best thing to
do if you have only small orchards.

Mr. Dyer: What pressure would you recommend in spraying for codling moth
where arsenate of lead is used?

Mr. Dunlap: You can do effective spraying all the way from sixty pounds
to 200 pressure. My preference is about 150 pounds. I have known
instances where considerable injury was done by using too high pressure.
We have sprayed at 225 pounds, but we have given that up. It is not as
good as from 150 to 175 pounds.

Mr. Dyer: I would like to know about what quantity of arsenate of lead
and lime-sulphur combined would you recommend? How much of each?

Mr. Dunlap: In 100 gallons of water we put three gallons of the
concentrated solution of lime-sulphur, as we buy it commercially, three
gallons to 100 gallons of water, that is, for the summer spray, and for
the arsenate of lead we use four pounds of arsenate of lead to the 100
gallons.

Mr. Dyer: In connection with that I would like to ask if you have used
or would recommend pulverized lime-sulphur?

Mr. Dunlap: I haven't used any.

Mr. Dyer: Do you know anything about it?

Mr. Dunlap: I think it is a more expensive proposition.

Mr. Dyer: I never used any myself. I thought perhaps that might work
better in connection with the arsenate of lead than the liquid.

Mr. Dunlap: I couldn't say, I have always followed the policy of never
departing from well-established lin