Experiment Station Record, Volume 74, January-June, 1936 Page: 44
xx, 1029 p. ; 24 cm.View a full description of this book.
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44 EXPERIMENT STATION RECORD [Vol. 74
Frotscher and Stuart pecans indicated that temperature is the outstanding
factor concerned in successful storage. Nuts of both varieties kept in good
marketable condition for 1 yr. or longer at 32 F. in either low or uncontrolled
relative humidity. Under high temperatures kernels of the Frotscher molded
more than did those of Stuart, but the latter became rancid somewhat earlier.
At all three temperatures, namely, 32, 40, and 50, uncured nuts kept as well
as cured nuts; in fact mold did not develop as readily on the kernels of uncured
as on cured nuts. Although 40 was more effective than 50, it was not low
enough to hold nuts in good condition for a year. The presence of free ammonia
in the storage chamber caused darkening of the surface of the kernels.
Polishing, bleaching, and dyeing the pecan, L. M. WARE (Natl. Pecan Assoc.
Proc., 32 (1933), pp. 42-44; abs. in Alabama Sta. Rpt. 1934, pp. 9, 10).-Observations
at the Alabama Experiment Station showed that the surface of the
pecan shell generally has exposed three distinct types of cells, each of which
responds differently to bleaching agents. It was found necessary to remove
all layers down to the schlerenchymous cells constituting the shell proper.
Such removal was accomplished by steel brushes or by placing the nuts in
revolving drums with coarse sand. After polishing pecans were bleached
satisfactorily by dipping them for 4 min. in a solution of sodium hypochlorite
containing 2 percent active chlorine and then for 1 min. in a 0.25 percent
sulfuric acid bath. Polished and bleached nuts were attractively colored by
various dyes, including chrysoidine loo to o oo of 1 percent, basic brown
50 to Y50 of 1 percent, or phosphine ' to %6 of 1 per cent. No dye
offered much promise on unpolished nuts.
The tung-oil tree, W. NEWELL, H. MowRY, and R. M. BARNETTE, rev. by A. F.
CAMP and R. D. DICKEY (Florida Sta. Bul. 280 (1935), pp. 67, figs. 30).-A revision
of an earlier bulletin (E. S. R., 64, p. 639), this presents additional information
on recent developments, such as the control of bronzing by the
application of zinc sulfate to the surrounding soil.
[Floricultural studies by the North Carolina Station] (North Carolina Sta.
Rpt. 1933, pp. 75-79).-Brief reports are presented of the results of varietal
tests with herbaceous perennials, tulips, garden and greenhouse roses, dahlias,
and carnations, and propagation studies with the poinsettia, all by G. 0.
Randall and J. G. Weaver.
The greenhouse culture of carnations in sand, H. M. BIEKART and C. H.
CONNORS (New Jersey Stas. Bul. 588 (1935), pp. 24, figs. 9).-Using a modified
triangle system with 26 nutrient solutions applied by the constant drip method,
it was found that when an excess of potassium phosphate was present Enchantress
carnations failed to open properly, and that when an excess of
magnesium sulfate was present the blooms were grayish white, water-soaked
in texture, and would not open. Three of the 26 solutions produced very
satisfactory plants and flowers. Using the most promising solution, several
varieties were grown in the greenhouse in sand and in soil with the usual
practices. Although flower production was somewhat greater in the soil, there
was practically no difference between treatments with respect to quality and
size of flowers and length of stems. The Enchantress carnation produced fewer
split flowers in sand than in soil.
Repetition of the experiment, using some of the sand again, showed that
sand produces flowers of equal quality to those in soil and that sand may
be used the second year satisfactorily. No essential difference was noted
between plants growing in washed white sand and in yellow sand containing
some silt and clay. A continuation of the experiment showed that the same
sand could be used at least for 6 yr.
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United States. Office of Experiment Stations. Experiment Station Record, Volume 74, January-June, 1936, book, 1937; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc5082/m1/64/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.