Black Walnut
The black walnut is placed at the head of the native group because of its great all round usefulness. Wherever it grows well its timber is of leading value among all American species. It is a splendid ornamental and the nuts are highly edible. The black walnut range does not extend as far north as does that of the butternut, yet wherever it grows well it is much more useful as a tree, and is successful under a greater variety of conditions. It is probably a more dependable bearer and, upon the average, the nuts yield a higher percentage of kernel. Many more varieties of black walnut than of butternut have been brought to light and more trees have been propagated. Enough varieties of promise have originated in Michigan alone (largely as a result of the work of Prof. James A. Neilson of East Lansing) to preclude any obvious need, at present at least, of bringing varieties from farther south into this zone. In addition to these, a number of other varieties have been recognized from equal latitudes, as in New York and, west of Lake Michigan, in Wisconsin, southeastern Minnesota and northern Iowa.
ADAMS—The Adams black walnut is a rather small variety with an approximate size range of from 34 to 48 nuts per pound, and an average of 39. In a cracking test of the 1930 crop, conducted after the kernels had become too dry for most satisfactory cracking, the yield of quarters was 16.75 per cent; that of small pieces 7.81 per cent, and the total 24.56 per cent. The nuts are much elongated in form, being sharply pointed at each end. Many are quite symmetrical, thin-shelled and, when not too dry, of excellent cracking quality. The kernels examined have been notably bright in color, firm in texture, very sweet and highly pleasing to the palate. The quarters are long and slender.
The Adams was first called to public attention in 1920, when the late Henry Adams of Scotts, Kalamazoo County, Michigan, was awarded first prize for an entry of nuts from the original tree which he made in a contest held that year by the Northern Nut Growers Association. In an article published in the Michigan farmer of Detroit, on July 7, 1922, he stated that this tree grew as a sprout in a corn row on land which he cleared in the spring of 1869. When the tree was seen by the writer in 1929, and again in 1932, it gave the impression of having been a moderate or slow grower. Such facts as have been obtainable from time to time indicate that it is but a moderate bearer. However, the character of the soil in which it stands is not of the best, although it is far from being poor. In better soil it would doubtless produce heavier and more uniform crops.
As nearly as it can be ascertained, the Adams was first propagated by the late W. G. Bixby of Baldwin, Long Island, who procured scions in 1922. It was again grafted six years later by J. F. Wilkinson of Rockport, Ind., with scions procured by the U. S. Department of Agriculture. In April, 1930, one of the resulting trees was shipped by the Department to the Kellogg Experimental and Demonstration Farm, Augusta, Mich. Trees are now growing on the grounds of the United States Department of Agriculture Horticultural Field Station at Beltsville, Md., and records in the Bixby file show that a tree was shipped by him to Mr. Harry R. Weber, Cleveland, Ohio, probably about 1930. No doubt the variety is growing in other plantings.
An entry of Adams black walnut won third prize in the Michigan contest conducted under the direction of Professor Neilson of East Lansing at the end of the 1929 crop year. During the same year Dr. W. C. Deming, Chairman of the Contest Committee for the Northern Nut Growers Association, made the following comments regarding the Adams: "Shell thin, cracking quality good to perfect, color of kernel light, condition plump, texture tender, quality rich, flavor high." His summary was put tersely, "An excellent nut."
In the event that this variety would do better in a richer soil than that where the parent tree stands, it might prove to be one of the most desirable of all kinds now known for use in the northernmost zone. The parent tree is now owned by a son of the late Henry Adams, Mr. H. R. Adams of Scotts, who now lives on the old homestead.
ALLEN—The Allen black walnut is another Michigan variety which appears to be of considerable promise. It has been under observation by the U. S. Department of Agriculture at Washington since the summer of 1923, when it was called to the attention by the Honorable Charles W. Garfield of Grand Rapids. The parent is a healthy double tree standing some twenty rods from Thornapple Creek on the farm of Mr. Glenn W. Allen, R. F. D. 1, Middleville, Barry County. The local conditions of soil and moisture are highly favorable. The tree frequently bears heavy crops, although, like most others of the species, it tends more to alternate rather than to annual bearing.
Five pounds of the 1931 crop tested in Washington showed a range of from 31 to 37 nuts per pound and an average of 34. The percentage of quarter kernels was 22.45, that of small parts 1.10, and that of bad, O.31 per cent, making a total kernel yield of 23.86 per cent. The cracking quality was good, the kernels were plump, the quality of the kernel rich and the flavor medium sweet.
The Allen was awarded first prize by Professor Neilson in the Michigan contest of 1929. It should be well worthy of test planting in the northern zone. It has been disseminated to a very considerable extent for use in small plantings.