Experiment Station Record, Volume 92, January-June, 1945 Page: 53
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19451 HORTICULTURAL 53
The blackberry or bramble (Rubus fruticosus L.), G. R. W. MEADLY (Jour.
Dept. Agr. West. Austral., 2. ser., 21 (1944), No. 1, pp. 17-28, illus. 7).-Experiments
compared effects and costs of different concentrations of various chemicals
and results of certain cultural measures in association with pasture establishment. A
5-percent solution of sodium chlorate was the most effective chemical used, but even
after application of 625 lb. per acre in five sprayings over 3 yr., a few weak plants
still remained. The cost would be prohibitive except for limited areas. Although
a weak solution of sodium arsenite had little permanent effect, it caused drying of
above-ground portions, thus facilitating the burning of the canes. When blackberry
growth is high, destruction or removal of canes is necessary before affected areas
can be plowed. Pasture establishment and subsequent judicious grazing, besides
being more effective and cheaper than chemicals, increased productivity of a heavily
infested area from a negligible quantity to that of a good permanent pasture.
Southern horticulture, H. P. STUCKEY (Atlanta, Ga.: Turner E. Smith & Co.,
.944, pp. 688+, illus. 186).-This comprehensive text, prepared by the director of
the Georgia Experiment Station, presents practical information on the growing and
handling of fruit and vegetable crops under southern conditions.
Vegetable and small fruit growing in toxic ex-orchard soils of central Washington,
C. L. VINCENT (WIashington Sta. Bul. 437 (1944), pp. 31, illus. 7).-An
accumulation of water-soluble arsenic in the top 5 or 6 in. of soil in apple orchards
that have been sprayed with arsenate of lead for many years has caused a toxic
condition which interferes with the agricultural use of the land following tree
removal. Studies on established plots in the Wenatchee district showed that vegetable
species differed markedly in their tolerance to arsenic. The most tolerant
species were asparagus, potatoes, tomatoes, carrots, tobacco, dewberry, grape, and
red raspberry. Even these crops were improved when two or more crops of rye
were grown and plowed under before the vegetables. Crops with little or no tolerance
included snap beans, lima beans, onions, peas, and cucumbers. Some crops,
like sweet corn and strawberries, showed considerable tolerance when grown in
heavy types of soil. There appeared to be differences in tolerance between varieties
within a species.
Cow manure, as well as plowed-under rye, was beneficial in reducing the parts
per million of water-soluble arsenic in the soil. Applications of ammonium phosphate
reduced the parts per million of soluble arsenic. The author suggests the
possibility that certain deep-rooted plants such as grapes, red raspberries, and
dewberries are tolerant because their roots are located below the more toxic layers
Some effects of waxing on weight loss from oranges and certain vegetables,
E. G. HALL and S. A. TROUT (Jour. Austral. Inst. Agr. Sci., 10 (1944), No. 2,
pp. 80-82, illus. 2).-The loss in weight during storage in oranges, carrots, turnips,
and cucumbers was reduced by dipping them in a wax emulsion and allowing them
to dry by free exposure to the air. With potatoes, there was no significant effect of
waxing on weight loss. Assuming that a reduction of 40 percent in the rate of
weight loss would be well worth while, a concentration of only 2.5 percent of wax
would be satisfactory for oranges. For carrots and turnips the effective wax
concentration consistent with cost would be between 7.5 and 10.0 percent. Waxing
retarded the yellowing of cucumbers as well as reducing weight losses.
Disease-resistant and hardy varieties of vegetables, V. R. BOSWELL. (U. S.
D. A.). (Natl. Hort. Mag., 23 (1944), Nos. 2, pp. 59-63; 3, pp. 138-143).-The
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U.S. Department of Agriculture. Agricultural Research Administration. Office of Experiment Stations. Experiment Station Record, Volume 92, January-June, 1945, book, 1947; Washington. (digital.library.unt.edu/ark:/67531/metadc5064/m1/66/: accessed February 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.