Another variety is the Duis. He had named two or three, including the Swagler and Duis variety. I noticed two years ago after he had died, the ground had changed hands. I saw the tree but it had very few nuts. The tree was apparently ten years old. I don't believe there are more than a dozen nuts. It was in a creek bottom, growing very rapidly. The Duis pecan is a nice size. It is a little larger than any of the commercial northern varieties. As for the bearing, I am a little skeptical. The Swagler variety I have practically abandoned. It is very much like the Norton. Clarksville I like very well. The Norton (parent of Clarksville) does not bear at all for me. I have ruled that one out. The Swagler gives a little trouble with late growth and winter trouble, winter damage, from the late growth in the fall. Consequently I haven't had any fruit until the present time.
MR. MAGILL: We'll come back to you later. I want to present some points in a letter from Dr. Frank B. Cross, of Oklahoma A.&M. College. They spent a lot of time on pecans in Oklahoma. They don't all have oil wells. He makes two or three statements I hadn't thought of. I will just throw these in to carry this discussion along.
"In comparing the two groups of nuts, namely, northern and southern, we find that practically all northern nuts require a longer rest period, than do the southern nuts. This means that the northern nuts for the most part begin growth later in the spring and begin to mature leaves and shed leaves and drop nuts before the southern varieties. The Major and the Greenriver are perhaps somewhat different from others of the northern varieties in that their maturity date usually falls with the earlier southern varieties.
"In order of production, I would rate the northern varieties as follows from highest to lowest: Major, Greenriver, Busseron, Indiana, Niblack, Kentucky, Warwick, Posey, Coy, Tissue, Johnson. Perhaps a little broader classification and grouping should be made. In my judgment, the Major, Greenriver, Busseron, Indiana, and Niblack compose one group which may be depended upon for fairly satisfactory production. The Kentucky, Warwick, Posey, Coy, Tissue, and Johnson have consistently been much lighter producers than those named in the first group.
"In order of desirability for planting I would make a list about as follows: Niblack, Major, Greenriver, Busseron, Indiana. I list the Niblack as first choice because it seems to be about as productive as any of the other varieties, and because of its excellence as a cracking nut and the quality of the kernel. The Niblack is really a very desirable nut for cracking, when it is cracked by such devices as the Squirrel cracker which applies pressure to both ends. The kernel comes free from the shell. In a good many varieties, such as the Indiana and Busseron the kernel and shell do not drop free, but the kernel frequently is wedged in furrows in the shell so that the two must be pulled apart. This is not true of the Niblack. When they are cracked by end to end crackers, the shell and kernel drop free. I list Major as second choice because of its good production. It is a little bit late in maturing for a variety of the northern group, and will sometimes get caught by frosts in many northern localities. The nut is not a desirable one for cracking because of its shape. A good cracking nut must be oval. The Major is comparatively round and many of the kernels will be crushed when they are cracked. The Greenriver is a good producer but it is a little bit late. The Indiana and Busseron are both proved to be good producers.
"Comparing the general production of the northern varieties and the southern varieties, as groups, the northern varieties seem never to be so productive in Oklahoma as are the southern varieties. Much more dependable production may be obtained from the southern varieties.
"Some data on cracking percentage of nuts and size of nuts might be desirable. This list is not complete, but contains several different varieties.
| Variety | No. Nuts per Pound | Kernel Percentage |
| Busseron | 62 | 47 |
| Greenriver | 80 | 49 |
| Major | 57 | 45 |
| Posey | 53 | 54 |
| Warrick | 63 | 48 |
"Of the nuts mentioned, the Posey is definitely larger than any of the others. It is a very fine type of nut, having a high kernel percentage. It is rather flat in shape, but is attractive in appearance. Were it not for the fact that the trees are consistently light producers, it would be a very desirable nut."
MR. BEST: They bear all right up here.