The influence of an interrupted K fertilisation on different K fractions of the soil, yield formation and K uptake by different crops was investigated in a long-term field experiment on Luvisol derived from loess. Irrespective of the previous K fertilisation, the interruption of K fertilisation resulted in a sharp decline of CAL extractable K. K concentration in the saturation extract as well as HCl extractable K were reduced while K fixation capacity increased within 10 years after omitting K. Omitting K fertilisation decreased yields of sugar beet and potatoes while cereals were not affected, although K uptake of all crops reacted to the differentiated K supply to a different extent.
CITATION STYLE
Scherer, H. W., Goldbach, H. E., & Clemens, J. (2003). Potassium dynamics in the soil and yield formation in a long-term field experiment. Plant, Soil and Environment, 49(12), 531–535. https://doi.org/10.17221/4189-pse
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