Journal article

Publication year: 2019

Pages: 193-220

Journal: Potato Research

Volume number: 62

Issue number: 2

ISSN: 0014-3065

eISSN: 1871-4528

DOI Link: https://doi.org/10.1007/s11540-018-9407-y

Publisher: Springer

Abstract: 
Water and nitrogen (N) management is a key factor in starch potato (Solanum tuberosum L.) production to ensure good yield and quality. Due to its shallow root system, potato is sensitive to drought and N uptake is limited to the upper soil layer resulting in leaching of nitrate. Efficient utilization of N and water can be optimized by adaptation of the cropping system and by selection of improved genotypes. A 2-year pot experiment with 14 modern starch and 3 table potato cultivars was conducted under controlled conditions in a rain-out shelter in order to investigate genotype-dependent responses to N deficiency and drought stress with regard to yield and yield components. Plants were grown at two N levels and a short-term drought-stress period during the sensitive tuber initiation stage was applied. Starch yield under control condition reached an average of 80.2 g plant(-1), which was reduced under drought stress by 18% at sufficient N supply and by 23% at N deficiency. Sufficient N fertilization improved the water use efficiency under both continuous water supply and drought stress. N limitation increased the N use efficiency (NUE) at continuous watering, while NUE was not affected by drought stress at sufficient N supply but decreased under N deficiency. Genotype and drought as well as genotype and N level interactions were significant for all investigated traits, i.e. tuber yield (fresh and dry matter), starch and N-Kjeldahl contents, starch yield and water consumption.

Harvard Citation style: Meise, P., Seddig, S., Uptmoor, R., Ordon, F. and Schum, A. (2019) Assessment of Yield and Yield Components of Starch Potato Cultivars (Solanum tuberosum L.) Under Nitrogen Deficiency and Drought Stress Conditions, Potato Research, 62(2), pp. 193-220. https://doi.org/10.1007/s11540-018-9407-y

APA Citation style: Meise, P., Seddig, S., Uptmoor, R., Ordon, F., & Schum, A. (2019). Assessment of Yield and Yield Components of Starch Potato Cultivars (Solanum tuberosum L.) Under Nitrogen Deficiency and Drought Stress Conditions. Potato Research. 62(2), 193-220. https://doi.org/10.1007/s11540-018-9407-y