ranking
varieties which have scores within the limits of variability, it will be
necessary to use judgment as to small differences of appearance. No
scoring schedule can be expected to entirely eliminate the judgment of
experts. Also it must be realized that characters other than the nuts,
such as bearing habit, hardiness, yield of trees, disease resistance
and the like must be considered in finally establishing the value of a
variety.

References Cited

1. Atwood. S. S. and L. H. MacDaniels. Tests of black walnut varieties
for differences in kernel yields. N.N.G.A Rept. 36: 44-50, 1945.

2. Berhow, Seward. Black walnut variety tabulations. N.N.G.A Rept. 36:
38-43, 1945.

3. Bixby, W. G. Judging nuts. N.N.G.A. Rept. 10: 122-133, 1919.

4. ----. The 1929 contests and the method of testing used. N.N.G.A. Rept.
22: 42-63, 1931.

5. Drake, N. F. Judging black walnuts. N.N.G.A. Rept. 22: 130-137, 1931.

6. ----. Black walnut varieties. N.N.G.A. Rept. 26: 66-71, 1935.

7. Kline, L. V., and S. B. Chase. Compilation of data on nut weight and
kernel percentage of black walnut selections. Am. Soc. Hort.
Sci. Proc. 38: 166-174, 1941.

8. Kline, L. V. A method of evaluating the nuts of black walnut
varieties. Am. Soc. Hort. Sci. Proc. 41: 136-144, 1942.

9. Lounsberry, C. C. Measurements of walnuts of United States.
N.N.G.A. Rept. 31: 162-127, 1940

10. MacDaniels, L. H. Report of committee on varieties and judging
standards. N.N.G.A. Rept. 28: 20-23, 1937.

11. ----. Is it possible to devise a satisfactory judging schedule for
black walnuts? N.N.G.A. Rept. 30: 24-27, 1939.

12. ----, and J. E. Wilde. Further tests with black walnut varieties.
N.N.G.A. Rept. 34: 64-82, 1943.

Test Plantings of Thomas Black Walnut in the Tennessee Valley

SPENCER B. CHASE, Tennessee Valley Authority

Native black walnut occurs abundantly throughout most of the Tennessee
Valley. Practically every farmer has at least one "favorite tree" and
each fall he collects nuts from that tree and stores them for cracking
during the winter. In some sections of the Valley walnut cracking in the
home is of considerable importance. Each year, some million and a
quarter pounds of kernels are cracked out at the five modern cracking
plants located in or adjacent to the Valley. Utilization of the crop is
becoming more and more complete.

In early studies of native nut trees, TVA recognized the p