Abstract
Studies were conducted in 1970 and 1971 to determine the relationships among seed size, spacing, stem numbers and yield of Russet Burbank potatoes. Cut seed sizes of 0.5, 1.0, 1.5, 2.0, 2 oz whole and a treatment consisting of 14% 0.5 oz seed, 62% 1 oz and 24% 1.5 oz seed were used in combination with seed spacings of 6, 9 and 12 inches. As seed became larger the average number of stems per seed piece increased. Percent stand and plant size rating also increased with larger seed. Total yields increased with an increase of seed size. The highest U.S. No. 1 yield was obtained with 2 oz whole seed spaced 6 inches apart with cut seed of the same size yielding slightly less. Within each spacing, the greater stem numbers per plot resulted in higher yields. However, when combinations of seed size and spacings were used to obtain a given stem number per plot, the higher stem numbers did not result in higher yields. A positive correlation coefficient of +0.982 was obtained between weight of seed piece/stem and total yield.
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Scientific paper #3863. Project #1949, Washington Agricultural Experiment Station, Washington State University; Pullman, Washington 99163.
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Iritani, W.M., Thornton, R., Weller, L. et al. Relationships of seed size, spacing, stem numbers to yield of Russet Burbank potatoes. American Potato Journal 49, 463–469 (1972). https://doi.org/10.1007/BF02895746
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DOI: https://doi.org/10.1007/BF02895746