Effect of different levels of nitrogen, potassium and magnesium fertilization on yield and starch and protein content in two potato cultivars
1991
Mazur, T. | Krefft, L (Akademia Rolniczo-Techniczna, Olsztyn (Poland). Zaklad Przyrodniczych Podstaw i Skutkow Nawozenia)
No significant effect of increase of nitrogen dose from 100 to 150 kg/ha on yield and quality was observed. Increase of potassium dose from 41,5 to 83,0 and 124,5 kg/ha resulted in a significant increase of the yield only in case of Atol cultivar. These doses had a negative impact on starch content but a positive one on protein content in both potato cultivars. Fertilization with magnesium at a dose of 24 kg Mg/ha affected positively yield of Cisa potatoes, while no such effect was observed in case of 12 kg Mg/ha. Magnesium fertilization decreased starch content and increased protein content in both potato cultivars
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