Use of growth regulators at potato cultivation and its effect on subsequent french-fries quality. The qualitative analyses of french-fries were based on tuber samples from a field experiment carried out on sandy-loamy soil in 1990-1992 in Parczew, Biała Podlaska Province. The experiment was set up with randomized subblocks in three replications. The subblocks of 1st row were made by the growth regulators: a) Mival concentration 500 mg × l-1 water; b) Poteitin concentration 10 mg × l-1 water; c) the control with distilled water. The growth regulators were applied onto the tubers in a spray form just before the planting. A factor of 2nd row was made by 37 potato cultivars out of all the earliness groups. Regulator Mival contributed to french-fries taste and flavour improvement in the years of a warm and dry potato vegetative period and Poteitin preparation has contributed significantly to improve french-fries consistency.
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