Potassium impact on nitrogen use efficiency in potato – a case study from the Central-East Europe
Witold Grzebisz, Pavel Cermak, Evan Rroco, Witold Szczepaniak, Jarosław Potarzycki, György FÜLEKYhttps://doi.org/10.17221/344/2017-PSECitation:Grzebisz W., Cermak P., Rroco E., Szczepaniak W., Potarzycki J., FÜLEKY G. (2017): Potassium impact on nitrogen use efficiency in potato – a case study from the Central-East Europe. Plant Soil Environ., 63: 422-427.
Potato yield is affected by an interaction between nitrogen (N) and potassium (K) supply. This hypothesis was verified in a series of field experiments conducted during 2010–2013 in Albania (AL), Czech Republic (CZ) and Poland (PL). The two-factorial experiment was founded on relative scales of K (0, 50, 100, and 150%), and N application rates (75% and 100%) of the recommended doses, which were country-specific. The average tuber yield was doubled for AL, increased by 50% for PL, and by 15% for the CZ in response to K and N interaction. These differences are caused by an increase in the apparent nitrogen efficiency (ANE), which rose significantly by the progressive Krates. Maximum average ANE of 90 kg tubers/kg N was recorded in AL; it was 2-fold lower in CZ. Top average apparent potassium efficiency (AKE) of 65 kg tubers/kg K was recorded in PL; it was 4-times lower in CZ. The relationships between AKE and ANE clearly demonstrate the tight interaction between the N and K, and its effects on potato yield. However, a sound K application management should be adjusted to the local edaphic and climatic conditions.Keywords:
partial factor productivity of N fertilizer; yield gap; Solanum tuberosum L.References:
Brown Charles R. (2011): The Contribution of Traditional Potato Breeding to Scientific Potato Improvement. Potato Research, 54, 287-300 https://doi.org/10.1007/s11540-011-9199-9FAOSTAT (2016): Available at: http://faostat.fao.org/site/567/default.aspx#ancor (accessed 03.05. 2017)Fontes Paulo C. R., Braun Heder, Busato Camilo, Cecon Paulo R. (2010): Economic Optimum Nitrogen Fertilization Rates and Nitrogen Fertilization Rate Effects on Tuber Characteristics of Potato Cultivars. Potato Research, 53, 167-179 https://doi.org/10.1007/s11540-010-9160-3Fotyma M. (2007): Content of potassium in different forms in the soils of southeast Poland. Polish Journal of Soil Science, 40: 19–32.GRZEBISZ Witold, DIATTA Jean, HARDTER Rolf, CYNA Katarzyna (2010): FERTILIZER CONSUMPTION PATTERNS IN CENTRAL EUROPEAN COUNTRIES – EFFECT ON ACTUAL YIELD DEVELOPMENT TRENDS IN 1986-2005 YEARS – A COMPARATIVE STUDY OF THE CZECH REPUBLIC AND POLAND. Journal of Central European Agriculture, 11, 73-82 https://doi.org/10.5513/JCEA01/11.1.809Kovacevic V., Grgić D. (1995): Response of soybeans to potassium fertilization on high potassium fixing soil. Rostlinná Výroba, 41: 246–248.Li Shutian, Duan Yu, Guo Tianwen, Zhang Pingliang, He Ping, Johnston Adrian, Shcherbakov Alexey (2015): Potassium management in potato production in Northwest region of China. Field Crops Research, 174, 48-54 https://doi.org/10.1016/j.fcr.2015.01.010Madaras M., Koubová M., Smatanová M. (2014): Long-term effect of low potassium fertilization on its soil fractions. Plant, Soil and Environment, 60: 358–363.Rubel Franz, Kottek Markus (2010): Observed and projected climate shifts 1901-2100 depicted by world maps of the Köppen-Geiger climate classification. Meteorologische Zeitschrift, 19, 135-141 https://doi.org/10.1127/0941-2948/2010/0430Singh S.K., Lal S.S. (2012): Effect of potassium nutrition on potato yield, quality and nutrient use efficiency under varied levels of nitrogen application. Potato Journal, 39: 155–165.Sparks D.L. (1987): Potassium dynamics in soils. Advances in Agronomy, 6: 1–63.Supit I., van Diepen C.A., de Wit A.J.W., Kabat P., Baruth B., Ludwig F. (2010): Recent changes in the climatic yield potential of various crops in Europe. Agricultural Systems, 103, 683-694 https://doi.org/10.1016/j.agsy.2010.08.009Westermann D. T. (2005): Nutritional requirements of potatoes. American Journal of Potato Research, 82, 301-307 https://doi.org/10.1007/BF02871960