Experiment Station Record, Volume 45, July-December, 1921 Page: 40
xxvii, 995 p. ; 24 cm.View a full description of this book.
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40 EXPERIMENT STATION RECORD. [Vol. 45
In time of irrigation tests, early irrigation gave the largest yields in all
cases; omission of one application resulted in yields significantly less than the
standard check, and large decreases followed the withholding of water until
late in the season. Early irrigation resulted in the largest percentage of marketable
tubers.
Results of size-of-seed experiments, 1915-1918, showed whole seed to consistently
produce better stands, larger total yields, and generally more marketable
tubers than cut seed. It also produced a greater number of tubers per hill,
which, however, generally averaged smaller in size than those grown from cut
seed. Where the seed was subjected to unfavorable conditions during the
period of germination a direct relation between the size of seed piece and yield
appeared, but this relation was not apparent when conditions were favorable;
in fact, deducting from marketable tubers the amount of seed used, the larger
sizes were found to be less economical. The results indicate that while the
best size may vary with conditions, it should equal or exceed 2 oz. in weight.
First annual report of the Nebraska Potato Improvement Association
(Nebr. Potato Inmpr. Assoc. Ann. Rpt., 1 (1919), pp. 160, figs. 44).-This reports
the first annual meeting of the association, held at Rushville in November,
1919, and outlines the activities of the association during 1919. Besides the
text of the Nebraska potato grading law, the following papers presented at the
meeting are included: Soil Moisture Conservation in Dry Land Soils, by L. L.
Zook (pp. 25-45) ; The Colorado Potato Beetle and Its Control, by M. H. Swenk
(pp. 49-57); The Work of the Colorado Potato Experiment Station, by W. C.
Edmundson (pp. 57-65); Potato Disease Control in Minnesota, by A. G. Tolaas
(pp. 73-78); Control of Dry Rot and Fusarium Wilt of Potatoes, by E. M. Wilcox
(pp. 79-83); The Seed Potato Industry as Related to Western Nebraska
(pp. 83-99), and Potato Experimental and Extension Work of the University of
Nebraska (pp. 138-143), both by H. O. Werner; The U. S. Bureau of Markets
and Its Relation to the Potato Industry, by W. A. Sherman (pp. 99-105) ; Trade
Channels for Nebraska Potatoes, by C. H. Heard (pp. 108-118); and Why Does
the Government Estimate the Potato Crop? by A. E. Anderson (pp. 118-122.)
Relation of flowering time and the position of flowers on the panicle
branch to the kernel weight of rice, Y. YAMAGUCHI (Ber. Ohara Inst. Landw.
Forsch., 1 (1919), No. 4, pp. 451-517, figs. 35).-Studies of the relation of the
flowering time and the position of the flowers on the panicle branch to the
kernel weight of rice are described. The material used in the experiment included
typical panicles of the Shinriki, Omachi, Karasu-Mochi, Kazusa-Kobore,
and Shima-Nishiki varieties.
In order to clarify the process of study, the division of the flowering sequence
of a panicle into the flowering succession of the panicle branches and the
flowering succession within the individual branch is suggested. The flowering
sequence of the panicle branches proceeds regularly from above downward,
while within the individual branches the flowers generally follow the succession:
1, 7, 6, 5, 4, 8, 3, 11, 2, 15, etc.
Concerning the relation between the actual flowering days and the kernel
weight, the heaviest kernel in the whole panicle, as well as within the single
branch, did not usually develop in the first blooming flower, but in one of the
flowers blooming on the second, third, or later days. In general, the earlier
the flower bloomed the heavier the grain within developed. The agreement between
these qualities was not so large as expected, as the correlation between
the observed flowering time and the weight of the glued or naked kernel was
negative and slight. The glue weight, on the contrary, was correlated
strongly with the flowering time.
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General Index to Experiment Station Record, Volumes 41 to 50, 1919-1924 (Book)
A topical, alphabetically arranged index to volumes 41-50 including experiment station records, publications reviewed, and foreign publications. In has a list of all editorial notes from the referenced volumes.
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United States. Office of Experiment Stations. Experiment Station Record, Volume 45, July-December, 1921, book, 1921; Washington D.C.. (https://digital.library.unt.edu/ark:/67531/metadc5009/m1/67/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.