Influence of harvest date on nitrate contents of three potato varieties for off-season production

Nitrate Content in Potatoes Cultivated in Contaminated Groundwater Areas

“…However, the tendency for nitrate accumulation in individual varieties (e.g. variety Carlingford with high and variety Desiree with low nitrate accumulation), which is in accordance with the reportings (Cieślik & Sikora, 1998;Hajslová et al, 2005;Lachman et al, 2005 ;Ierna, 2009), should be further explored on a larger number of samples and considered when planning the reduction of nitrate intake with food.…”

“…Furthermore, different climatic conditions, mainly light and temperature, but also weather and storage conditions, can also affect nitrate content (Bélanger, Walsh, Richards, Milburn, & Ziadi, 2002;Hajslová et al, 2005;Ierna, 2009;Lachman, Hamouz, Dvořák, & Orsák, 2005;Rogozinska, Pawelzik, Poberezny, & Delgado, 2005). DP plain and the vicinity of Pohorje are characterized by similar soils and climate.…”

Tuber yield and quality characteristics of potatoes for off-season crops in a Mediterranean environment

“…31 In the winter-spring crop in the first harvest, values of tuber nitrate contents were found close to the guideline values proposed by Poland and Germany (183 and 200 mg NO 3 kg −1 f.w., respectively). 5,32 With a delay in harvest time, nitrate contents in the investigated tuber samples decreased in the winter-spring crop, and increased in the summer-autumn crop in the three genotypes, and this is attributable to the opposite trend of sunlight intensity that affects the activity of nitrate reductase.…”

Effect of Organic, Nitrogen and Potassium Fertilization Treatments on Growth, Yield and Chemical Contents of Two Cultivars of Potato (Solanum tuberosum)

“…However, high amount of nitrogen augment the nitrates in tubers to levels above the threshold allowed by the major European distributers which in set at 200mg/kg fresh weight (Ierna, 2009). Potassium stimulates early haulm growth and vigor as well as increases tuber size and yield (Allison et al 2004 andEI-Sawy et al 2000) Also, it has physiological processes in plant respiration, transpiration and translocation of sugars carbohydrates and enzyme transformation .…”