A reliable tuber yield prognosis requires a complex statistical analysis of potato nutritional status in the fully developed 4th leaf at the onset of tuberisation. This hypothesis was validated in the series of field experiments conducted in 2006-2008 in Poland. The experimental design was composed of two nitrogen (N) rates (60. 120 kg/ha). https://www.ealisboa.com/flash-grab-Hellfire-Sloe-Gin-special-find/