Yield potential of potatoes with colored flesh in central-eastern Poland

This work presents the results of the researchers’ study, including a three-year (2021, 2022, 2023) field experiment that was a single-factor trial with three replicates, using table potatoes as the test plant. Eight potato cultivars with different flesh colours were tested: Bora Valley – dark purple flesh, Vitelotte Noire – purple, Blaue Annelise – purple, Salad Blue – purple, Provita – purple, Rote Emmalie – red, Herbie 26 – red, and Eurostar – light yellow. The following parameters were measured: total tuber yield, marketable yield (tubers with a diameter of ≥35 mm, free from external and internal defects), and large tuber yield (potatoes with a diameter >50 mm). The analysed yields were significantly influenced by the cultivars and weather conditions during the study years. Among the coloured cultivars, the highest average total yields were recorded for Rote Emmalie, Provita, and Bora Valley cultivars; the highest marketable yields for Bora Valley, Provita, and Rote Emmalie; and the highest large tuber yields for Bora Valley and Provita. In 2021 (relatively dry) and 2022 (optimal conditions), tuber yields were significantly higher than in 2023 (a very dry year).