Experiment Station Record, Volume 92, January-June, 1945 Page: 46
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46 EXPERIMENT STATION RECORD [Vol. 92
for N from 0.37 to 0.90 ton, P from 0.12 to 0.80 ton, and K from -0.32 to +0.25
ton. N 100 lb. per acre produced substanital yield increases over N 25 lb., which
was not enough for maximum yields. Response to P was limited by N deficiency in
a number of cases. N-P combinations produced higher yields than did either N or
P or PK. K in general did not increase hemp yields. Hemp yields were usually
highest on soil types which contained the greatest quantities of N and organic
matter, provided drainage was adequate.
Peanut production possibilities in South Carolina, J. C. DOWNING, G. H. AULL,
K. V. GOODMAN, and M. J. PETERSON. (Coop. U.. S. D. A.). (South Carolina
Sta. Bul. 351 (1944), pp. 49, illus. 14).--Part 1, on production possibilities in the
State, deals with production in 1942 and 1943 and prospects for 1944, and the location
and extent of soils suitable for the crop and expansion possibilities. Part 2,
on production possibilities in Bamberg County, is designed to show in more, detail
how problems and needs in the State apply in a county. Discussion is accorded
suitability of the soils and yield relationship among soil groups suitable for peanuts,
oil production from peanuts and cotton, returns from peanuts and competing crops
of cotton, corn, and peanuts hogged off, appropriate production practices to increase
yields and profits, and increasing the acreage of peanuts on the small, medium-size,
and large individual farms. Methods of identifying soils suitable for peanuts and
used in determining their extent and distribution are appended, together with lists of
these soils as grouped, and an outline map showing generalized soil associations.
Roguing field peas, D. G. WELLS and I. M. INGHAM. (Coop. U. S. D. A.).
(Wash. State Col. Ext. Cir. 76 (1944), pp. 4).-Practical instructions on removal
of off-type plants in a field pea variety cover origin and indentification of rogues,
organization of a roguing crew, and time of roguing.
Potato breeding, whither bound? F. J. STEVENSON. (U. S. D. A.). (Amer.
Potato Jour., 21 (1944), No. 7, pp. 192-199).-Accomplishments of the national
potato-breeding program active during 14 yr. are reviewed and plans for future
work are outlined.
Influence of nitrogen, phosphorus, potassium, and calcium on tuber and
foliage weight of potatoes, R. L. CAROLUS. (Va. Truck Expt. Sta.). (Amer.
Potato Jour., 21 (1944), No. 7, pp. 199-203).-After dry seasons in which much of
the N applied was not used by the crop but was prevented from leaching by green
manures, a reduction in N applied for potatoes appeared desirable. On acid soils
large quantities of P in fertilizers apparently are necessary, regardless of previous
weather, until the phosphate-fixing capacity of the soil is satisfied. Tuber yields
were not necessarily correlated with plant growth, for both low and high yields
were produced on plats with both low and high plant weights. A 5-10-5 fertilizer
seemed as well suited to most soils on the Eastern Shore of Virginia' as the 6-8-6
analysis, and high analysis phosphatic materials might properly be used in its
Studies on potato nutrition.-I, The effects of fertilizer treatment on the yield
and composition of Kern County potatoes, 0. A. LORENZ. (Univ. Calif.).
(Amer. Potato Jour., 21 (1944), No. 7, pp. 179-192).-In yield and nutrient-analyses
studies with White Rose potatoes grown in fertilizer experiments at Saco,
Calif., and the U. S. Cotton Experiment Station at Shafter in 1942, N was the
predominating nutrient element affecting yield, P may have given a slight response,
and K had no effect. N 52 lb. per acre increased yield from 233 to 382 sacks per
acre at Shafter, and N 60 lb. increased the yield from 174-251 sacks at Saco, and
even higher N rates might be beneficial. Soluble nutrients in petiole tissues indicated
that if plants contain less than 800 p. p. m. of nitrate 1 mo. after emergence,
the yield will be depressed, agreeing with data of Carolus (E. S. R., 80, p. 477).
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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/m1/59/: accessed May 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.