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exity of the score? The actual amount of kernels recovered reflects both the size of nuts and the yield of kernels. Plumpness of the kernels is reflected in the total weight of kernels and does not need to be considered separately. The important elements in a score were considered to be: 1) The crackability of the nuts of the variety. This is measured by the weight of kernels obtained in the first crack. 2) The yield of the variety. This is measured in the total weight of kernels. 3) The marketability of the product. This can be measured by the number of pieces in the sample. In general, the smaller the number and the larger the size of the pieces the better the marketability. With this general background in mind, many samples were tested and the results published in the 1945 report[1]. In order to secure the data needed the kernels of the individual nuts in the samples were weighed separately. NOTE: All samples were cracked with the (John W.) Hershey nut cracker. Some of the conclusions drawn from these tests were as follows: 1) Using kernel weights only gives a rapid and accurate test of differences between varieties. 2) Ten nuts are adequate for a single sample. 3) The location of the tree with reference to climate and soil is probably the most important single factor influencing kernel yield. No evidence was obtained, however, to indicate that the varieties ranked significantly different at different locations. 4) If reasonable care is used in cracking the differences due to different operators tend to be non-significant. The statistical proof that a ten-nut sample is adequate and that differences between operators are not significant are two findings that are important in setting up a schedule. During the past year further testing has been done, in which scores were computed from ten-nut samples.[A] The samples had preliminary cool, dry storage to assure comparable moisture content. Enough nuts were cracked in each sample to secure ten that were well filled. Empty nuts were recorded. The following data were kept for each sample: 1) The weight of the kernels recovered in first crack in grams. 2) The total weight of the kernels in grams. 3) The number of quarters and number of halves recovered. Scores were computed as 1) the weight of the first crack in grams plus 2) half of the total weight of the kernels recovered in grams plus 3) the number of quarters divided by four and, 4)
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