Effect of plant growth regulators on potato tuber yield and quality

The aim of the study conducted in 2019-2021 was to determine effect biostimulants and growth regulators on yield size structure, as well chemical composition edible potato tubers. cultivar evaluated Vineta. Asahi SL, Kelpak Aminoplant, Tytanit, gibberellic acid (GA3) Moddus 250 EC were applied cultivation. application SL Tytanit increased total marketable tuber yield, average weight. Aminoplant had a beneficial only while decreased mean weight, especially under conditions high rainfall. Biostimulant caused decrease number tubers formed, stimulated tuberisation. Both preparations share deformed yield. formation multidirectional. protein content tubers, remaining preparations, with exception regulator EC, amount this component. GA3 crude fibre and, case also mineral components. highest concentration nitrates (V) characteristic for treated lowest those EC.