Summary
Field and greenhouse trials supplemented with laboratory analyses were used to study the effects of nitrogen and phosphorus on the growth and development of Russet Burbank potatoes in southeastern Idaho.
Based on the results of this study, it appears that both nitrogen and phosphorus had direct effects on the growth and development of the potatoes. Both affected the concentration of different elements in the plant tissue (indicating the physiology of the plant had been affected) and tuber size. In the field, reduction in tuber size as a result of nitrogen alone was not evident, but it was evident in the greenhouse. Reduced tuber size as a result of phosphorus was evident in both the field and greenhouse studies. In the greenhouse, excess nitrogen reduced the tuber set; excess phosphorus delayed plant emergence; growth rate, primarily top growth, was increased by both nitrogen and phosphorus.
Sumario en español
Experimentos de campo e invernadero y análisis de laboratorio fueron llevados a cabo para es tudiar el efecto del nitrógeno y el fósforo sobre el crecimiento y desarrolo de la papa en el sureste de Idaho.
Los resultados demostraron que tanto el nitrógeno como el fósforo tienen efecto firecto sobre el crecimiento y desarrollo de la papa. Ambos elementos afectaron la concentración de diferentes componentes del tejido de la planta y tamaño del tubérculo. El tamaño del tubérculo no fué reducido en los experimentos de campo como resultado del nitrogeno solo, pero fué afectado en los experimentos de invernadero. El tamaño del tubérculo fué reducido con el uso del fosforo en los experimentos de campo e invernadero. En el invernadero el exceso de nitrógeno redujo el número de tubérculos; el exceso de fosforo retrasó la emergencia de la planta; tanto el nitrógeno como el fósforo aceleraron el crecimiento de la planta, especialmente las ramas.
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Former Assistant Soil Scientist and former Assistant Plant Pathologist, Potato Improvement Specialist, respectively.
Contribution from the Department of Agricultural Biochemistry and Soils and the Department of Plant Science, Agriculture Experiment Station, University of Idaho, Aberdeen, Idaho and aprroved as Research Paper No. 650. (Presented at the annual meeting of the Potato Association of America in Idaho Falls July 15–17, 1964.)
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Sommerfeldt, T.G., Knutson, K.W. Effects of nitrogen and phosphorus on the growth and development of russet burbank potatoes grown in southeastern Idaho. American Potato Journal 42, 351–360 (1965). https://doi.org/10.1007/BF02861998
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DOI: https://doi.org/10.1007/BF02861998