Influence of sprinkler irrigation and nitrogen fertilization on quality of potato raw material destined for production of crisps and chips
2005
Pinska, M. | Wojdyla, T. | Rzekanowski, C. | Rolbiecki, S. | Rolbiecki, R.
The trials were conducted in the years 2001-03. The aim of the study was to determine the influence of sprinkler irrigation and nitrogen fertilization on chemical composition of potato tubers from cv. Barycz, Mors and Triada as well as on the quality of crisps and chips which were obtained from these cultivars. Chemical analysis indicated that tubers of all the tested cultivars grown under sprinkler irrigation and with higher nitrogen dose (125 kg/ha) were characterized by tendency for decrease of dry matter and starch content. Tubers of potatoes from irrigated plots were characterized by higher accumulation of reducing sugars. Irrigation did not influence on the vitamin C content. Triada potato tubers were the best for production of crisps and chips. Crisps produced from tubers of this cultivar grown without irrigation and fertilized with the higher nitrogen dose were characterized by the highest quality (4.5 pt). Chips of the highest quality (4.8 pt) were obtained also from non-irrigated objects but fertilized with the lower nitrogen dose (75 kg/ha). Storage of potatoes significantly decreased the usefulness of tubers for thermal processing (decrease of starch, dry matter and vitamin C content as well as increased accumulation of reducing sugars). These unfavourable changes were lower on non-irrigated objects and under lower level of nitrogen fertilization
显示更多 [+] 显示较少 [-]