Trees, Fruits and Flowers of Minnesota, 1916: Embracing the Transactions of the Minnesota State Horticultural Society,Volume 44, from December 1, 1915, to December 1, 1916, Including the Twelve Numbers of "The Minnesota Horticulturist" for 1916
History
Trees, Fruits and Flowers of Minnesota, 1916: Embracing the Transactions of the Minnesota State Horticultural Society,Volume 44, from December 1, 1915, to December 1, 1916, Including the Twelve Numbers of "The Minnesota Horticulturist" for 1916
Mr. Cook: Oh, I don't know of any. Let me tell you something, the plum
as a class is very susceptible to injury from sprays. I know when
Professor Luger was entomologist there was some talk of spraying plums
for curculio, and some tried it, and while it generally got the curculio
it killed the trees, and Professor Luger said that the foliage of the
plum was the more susceptible to injury from arsenical poisoning than
that of any other fruit in Minnesota. The Japanese hybrid plums, I
think, will take injury a little bit quicker than the native, and when
you come to the sand cherry plums it is extremely dangerous to spray
with anything stronger than rain water.
Prof. Hansen: I want to talk about the lime-sulphur. We will probably
have that in the next paper, only I want to say that seems to have taken
the place of the Bordeaux mixture. Brown rot, that is something that
affects the peach men too. In the state of Ohio in one year the peach
men lost a quarter of a million dollars from the brown rot, the same rot
that takes our plums. We are not the only ones that suffer from the
brown rot. Well, they kept on raising peaches because they learned to
control it, and if you are not going to spray I think you better give
up. As to trying to get something that won't take the rot, it is
something like getting a dog that won't take the fleas. (Laughter.)
Mr. Older: I had considerable experience in putting out seedling plums.
When large enough to get to bearing there wasn't a good one in the whole
lot. I got some plums, the finest I could pick out, and three years ago
they first came into bearing, and one of my neighbors went over there
when they were ripe and said they were the best plums he had seen, but
since then I have had none. I got some Emerald plums from Mr. Cook. They
were nice plums, and when he came to see them he said, "I came to see
plums, I didn't come to see apples," but the brown rot gets a good many
of them. I had some last year, and just before they ripened the brown
rot struck them, and it not only took all the fruit but got the small
branches as well. I don't know what to do about the brown rot.
Mr. Drum: I would say that my experience was something like Mr. Older's
with the sand cherry crosses. They grew until they were large and I
sprayed them with lime-sulphur. I couldn't see any injury from that
until they were grown, nearly ripe, and then in spite of me in a single
day they would turn and would mummy on the trees. I had a Hanska and
Opata and the other crosses, and they bore well. They were right close
to them, and the brown rot didn't affect them particularly.
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