Özet:

Potato is one of the essential food products used in human nutrition, and the time and amount of nitrogen fertilization are very important to ensure tuber quality in potato cultivation. This research was carried out in Niğde Ömer Halisdemir University Faculty of Agricultural Sciences and Technologies Research and Application area in order to determine the effect of different nitrogen doses on the tuber mineral content of potatoes. Agria potato variety was used as material and urea fertilizer (46 % N) was used as nitrogen source. In the study, 6 different nitrogen doses (0, 10, 20, 30, 40, 50 kg/da) were applied. Plots were laid out in a randomized complete block design with four replicates. According to the results of the analysis of variance made with the data on the properties examined, the effect of nitrogen doses on the tuber nitrogen, potassium, magnesium, iron, zinc, manganese and copper contents was found to be significant. However, it had no effect on phosphorus, calcium and sulfur. The highest nitrogen content in the tuber was obtained from 50 kg/da, potassium, magnesium and manganese content 10 kg/da, iron content 20 kg/da, zinc content 0 kg/da and copper content 20 kg/da. It was found that the nitrogen content in the tuber increased with a rise in the amount of nitrogen from 0 kg/da to 50 kg/da. However, it was determined that raise increased the amount of some elements up to a certain level but did not show any effect on other mineral substances.