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Rahmlow, H. J. (ed.) / Wisconsin horticulture
Vol. XXX (September 1939/July-August 1940)

Wisconsin horticulture, vol. 30, no. 11: July-August, 1940,   pp. [305]-328


Page 312

 
WISCONSIN  HORTICULTURE 
In The Berry Patch 
RASPBERRY CROWN GALL 
     INCREASED BY SOIL 
            INSECTS 
T HE Minnesota Experiment 
   Station reports that soils con- 
taining large numbers of white 
grubs, and other soil insects on 
which   raspberries  have   been 
planted result in an increase in 
the amount of raspberry crown 
gall. 
  Soil insects such    as white 
grubs carry the crown gall bac- 
teria on their body, and inocu- 
late the roots through wounds 
made while feeding. A number 
of such insects feed on large 
roots or in the crowns of the 
plants. They may be infected with 
the crown gall bacteria by other 
plants than raspberries and then 
give the disease to the raspberry 
roots. 
  Other insects such as wvire 
worm and larvae of certain root 
feeding beetles have been found 
feeding on infected roots. In the 
experiment, raspberries were 
planted on various kinds of fields 
with the following results: Rasp- 
berries following small grain, 2.8 
per cent infection; after alfalfa, 
5.4  per cent infection ; after 
grains with weeds, 7.5 per cent 
infection. After Kentucky blue- 
grass, on four different fields, in- 
fection ranged from 23 to 54 per 
cent. 
  After a two-year rotation of 
sweet clover there was only 2.13 
per cent of infection. 
  This experiment indicates that 
raspberries should not be planted 
on bluegrass sod, or any soil with a 
high percentage of earth insects, 
and that sweet clover and alfalfa 
sods are very good for raspberries. 
  "Alice has decided to marry a 
struggling fruit grower." 
  "Well, if Alice has decided, we 
might as well stop struggling." 
FALL SETTING OF STRAW- 
           BERRIES 
TN our last issue we mentioned 
that the test made last fall indi- 
cated that it is not advisable to set 
out strawberry plants in the fall 
of the year. 
   Mr. Lynn Reynolds of Tomah 
writes in regard to this matter, "I 
think it was a good test of fall set- 
ting of exhauusted strawberry plants. 
A short time before the Canadian 
strawberry plants arrived I set out 
some Wayzata from my own gar- 
den and found that they all came 
through the winter even without 
mulching." 
  There is, of course, some differ- 
ence between setting out plants 
from one's own garden in a change 
of location, and shipping them in 
from long distances. Perhaps fur- 
ther trial should be made and we 
would like to hear from any of our 
members if they have ever suc- 
ceeded by setting out shipped in 
strawberry plants in the fall of the 
year. 
FERTILIZERS FOR STRAW- 
           BERRIES 
P AST experience and the results 
   of research show that chemical 
fertilizer may supplement but can- 
not replace organic matcrials in our 
soils. The turning down of avail- 
able stable manure and green ma- 
nure crops, such as soybeans, cow- 
peas, rye, wheat, winter barley and 
others, keeps up the humus content. 
After the plants are set a side- 
dressing of fertilizers, such as 
2-12-6 or similar grade, usually is 
cultivated into the soil. If the plants 
still are not making satisfactory 
growth later in the summer, 150 
pounds per acre of sulphate of am- 
monia or nitrate of soda may be 
applied to the row in July or Aug- 
ust. The fertilizer must be applied 
only when the plants are dry and 
the excess is brushed from the 
plants. 
-From Hoosier Horticulture. 
  DRESDEN STRAWBERRY 
     LOOKS PROMISING 
T HE new Dresden strawberry, 
   fruited by our fruit testing 
members for the first time this 
year, looks very promising. In 
the opinion of these growers 
they have never seen any variety 
which yields as heavily as the 
Dresden. The berries were large 
and the c I u s t e r s loaded. The 
plants were quite vigorous. 
  In quality the Dresden is per- 
haps not the best, but it has fla- 
vor which promises to make it a 
good berry for canning and table 
use. For commercial growing it 
is l)rol)ably not necessary to pro- 
dtce a berry which has high qual- 
ity for eating out-of-hand, as 
very few are eaten that way. 
  More Dresden pl a n t s wvere 
planted this spring so that we 
will have a much larger test in 
1941. Based on observation of 
this year, we would not hesitate 
to recommend that more of our 
members try from 25 to 50 plants 
this coming year. 
            you'll be proud to mar- 
            ket your fruit in. 
Get everything you need in fruit, vege- 
table, plant boxes and crates at thrifty 
Sheboygan prices. Leading growers 
have preferred this big, complete line 
for 60 years. Write today for color- 
ful, free folder and prices. 
   Sheboygan Fruit Box Co. 
5640 CT            Sheboygan, Wis. 
July-August, 1940 
312 


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