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Wisconsin State Cranberry Growers Association / Wisconsin State Cranberry Growers' Association. Forty-seventh annual meeting, Wisconsin Rapids, Wisconsin, December 14, 1933. Forty-seventh summer convention, Wisconsin Rapids, Wisconsin, August 8, 1933

Goldsworthy, Vernon C.
Cranberry problems of 1933,   pp. 15-19 PDF (1.5 MB)

Page 19

Bennett marsh. Here the water was scarce and two sections were
flooded at a time, and then the next two were taken, and so on. The
injury grew in severity the later the water was held off from the sec-
tions. The sections which were covered first were injured very little,
while those flowed last were injured very badly. Another type of in-
jury is the direct winter killing, and is common ly experienced. In this
case the vines turn red, but generally send forth new growth the fol-
lowing spring. Very likely the conditions which caused this year's
trouble will not appear again next year, or maybe for a series of
years, but no doubt they will return sometime. If it gets cold, and
hard freezing temperatures are noted, even if early in the season, the
grower should by all means flood and protect his vines. A winter
flood should be put on according to temperature and not according to
any specific date and should vary from year to year with natural
climatic conditions. It is difficult to tell at the present time just ex-
actly what may have happened last fall and winter as there are no
careful records of conditions at that time and the above discussion is
what I believe may have occurred. Undoubtedly, new factors bearing
on the case will be discovered and we may be forced to take a new
stand on the question, but at the present the above seems most logical.
Trichagamma parasites were tried again this year. Last year
results were very encouraging. The first batch of parasites were not
put out quite early enough due to the fact that they arrived late, and
the fruit worm (Mineola vaccinii) was earlier this year than usual.
However, the parasites should be effective on eggs which were laid
In conclusion I wish to say that I hope the State will find it possible
to continue the cranberry appropriations. The cranberry crop is a
very special one and requires special training in that particular field.
The average farmer can turn to the State University for help or to
his county agent. Not so the cranberry grower, however, and if he
wants aid in his troubles at the present time, and he is constantly
being faced with new problems, he must depend on the field man, un-
der the Department of Agriculture and Markets of the State. The
Wisconsin cranberry grower cannot look to eastern growers for guid-
ance for our climatic conditions are widely divorced from theirs. We
have insects that they do not have, and the insects which we do have
in common vary in their life cycle so that control conditions must be
applied at different times. The average cranberry grower has neither
the laboratory facilities nor the special training required to do much
of the experimental work that is required of a field man, such as the
life history studies of insects. Neither has he time to study over 125
species of leaf-hoppers found on Wisconsin marshes, so as to be able
to determine the Euscelis species. This job alone really requires a
specialist. The inspection of vines offered for sale is a very import-
ant part of the field man's activity and the success of many young
plantings depends absolutely on knowing where to get vines that are
reasonably free from false blossom. So does the fact of knowing how
to flood properly, or spray for the carriers of cranberry false blossom
in sections where the disease is just gaining a foothold. At the pres-
ent time, much experimental work is being done and if the work was
dropped would mean a much greater loss than mere momentary value
of keeping up the work for the time being.

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