Agronomy Science, przyrodniczy lublin, czasopisma up, czasopisma uniwersytet przyrodniczy lublin
The study results based on a field experiment carried out in Parczew in the years 2003–2005 on the soil of light loamy sand type acidic reaction by means of randomized sub-blocs in three replications. The experimental factors were made by two cultivars: Albik and Rubik. Full manuring and uniform mineral fertilization was applied in the amounts: 25 t.ha-1 farm manure and 100 kg N; 43.6 kg P; 124.5 kg K.ha-1. The estimations of darkening flesh of raw and cooking tubers were made according to the 9º scale. The investigation revealed a more intense darkening in the stolon part than in the apical part of a tuber which was determined by the genetic factor. Albik cultivar was characterized by a smaller tendency to the flesh darkening of cooking and raw bulbs after 1 hour. Rubik cultivar showed more stability in respect of the quality of raw tubers.
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