Experiment Station Record, Volume 92, January-June, 1945 Page: 56
56 EXPERIMENT STATION RECORD [Vol. 92
considered possible that treatments that are unfavorable to young trees may be
economical and practical in mature orchards.
Over 100 varieties of peaches in test in station orchard, T. H. JONES (Miss.
Farm Res. [Mississippi Sta.], 7 (1944), No. 8, p. 7).-A total of 44 varieties
fruited in 1944, beginning with the Eubanks variety picked May 24 and closing with
Late Elberta on August 10. The more satisfactory varieties for Mississippi are
Ripening Washington-grown Elberta peaches for canning, A. M. NEUBERT
and M. K. VELDHUIS. (Wash. Expt. Sta. coop. U. S. D. A.). (Fruit Prod. Jour.
and Amer. Mfr., 23 (1944), No. 12, pp. 357-360, 379, 381).-Freestone peaches
intended for commercial canning in the Pacific Northwest are said to be harvested
usually in the firm ripe state and stored until they attain canning ripeness. In
studies involving different temperatures and relative humidity conditions, Elberta
fruits held at 75 F. developed usually a better flavor than those held at higher or
lower temperatures. The flavor of peaches ripened in open boxes at room temperatures
(700-80) was equal to that of fruit ripened in cabinets at 75, but such fruit
was lighter in color. At 75, relative humidity did not appear to be critical over
a range attained ordinarily in commercial storages in Washington. Rate of ripening
was, as expected, accelerated by rises in temperature.
The beach plum, its written record, G. GRAVES (Natl. Hort. Mag., 23 (1944),
No. 2, pp. 73-97, illus. 2).-This comprehensive account discusses the botany and
distribution of the beach plum, the history of its utilization since early colonial times,
efforts toward horticultural improvement, chemical composition, literature, etc.
Pruning studies with boysenberries, T. H. JONES (Miss. Farm Res. [Mississippi
Sta.], 7 (1944), No. 8, pp. 1, 2).-Information is presented on the growth
habits and pruning requirements of the boysenberry. Two methods of pruning, (1)
in which the fruiting canes are removed after-harvest and (2) in which all top
growth is cut away following harvest, are under study.
Currant and gooseberry culture in Ohio, W. P. JUDKINS (Ohio Sta. Bimo. Bul.
230 (1944), pp. 243-245).-Brief information is presented on varieties, propagation,
planting, fertilizers, culture, control of pests, etc.
Relation of the production of an active emanation to respiration in the avocado
fruit, H. K. PRATT and J. B. BIALE. (Univ. Calif.). (Plant Physiol., 19 (1944),
No. 3, pp. 519-527, illus. 7).-Observations on the carbon dioxide evolution of
Fuerte and Nabal avocados held at 5, 15, and 25 C. (41, 59, and 77 F.)
showed a very pronounced climacteric at the upper two levels and no well-defined
increase at 5 C. Associated with the climacteric rise was the production of an active
emanation, presumably ethylene, as indicated by the response of etiolated pea seedlings.
Although there was no obvious climacteric rise at 5, a cycle of emanation
production was observed after which the fruit showed a postclimacteric carbon
dioxide response when transferred to a higher temperature. Treatment of preclimacteric
fruit with ethylene caused an earlier onset of the climacteric rise and
more uniform softening.
Studies on nutrition as qualified by development in Musa cavendishii Lambert,
W. A. T. SUMMERVILLE (Queensland Jour. Agr. Sci., 1 (1944), No. 1, pp. 1-127,
illus. 45).-As a basis for sound fertilizer treatments studies were made of the
growth and fruiting habits of the Cavendish banana. The number of leaves produced
in a given period is governed largely by climate, but the area of leaf surface is an
index to nutritional status. The development of the plant was divided into three
stages, (1) purely vegetative increase, (2) in which both floral and vegetative parts
are produced, and (3) devoted largely to the maturation of the fruit. Valid comparisons
between plants can be made only when they are in the same developmental
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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 D.C.. (digital.library.unt.edu/ark:/67531/metadc5064/m1/69/ocr/: accessed April 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.