INFLUENCE OF NITROGEN SUPPLY ON CADMIUM ACCUMULATION IN POTATO TUBERS

Autor:	Håkan Asp, E. Helene Larsson Jönsson
Rok vydání:	2011
Předmět:	Cadmium Ammonium sulfate Physiology Phosphorus fungi food and beverages chemistry.chemical_element engineering.material Calcium nitrate chemistry.chemical_compound Horticulture Nitrate chemistry Agronomy engineering Ammonium Fertilizer Agronomy and Crop Science Plant nutrition
Zdroj:	Journal of Plant Nutrition. 34:345-360
ISSN:	1532-4087 0190-4167
Popis:	The effect of different levels and forms of nitrogen (N) fertilizer on cadmium (Cd) concentrations in potato (Solanum tuberosum L.) tubers, a large component of the northern European diet, was investigated with the aim of decreasing the Cd content. A high and a low Cd-accumulating cultivar were used in two field trials and a pot experiment. The N fertilizers tested were balanced N- phosphorus (P)- potassium (K) 11-5-18 + micronutrients, alkaline calcium nitrate and acidic ammonium sulfate at levels of 60, 160, and 240 kg N ha−1 at planting or (for the higher N doses) split between two or three occasions. The Cd concentration in tubers of both cultivars decreased when increasing the N fertilizer from 60 to 160 or 240 kg N ha−1, indicating that Cd uptake and translocation are not positively correlated to the growth rate of the potato plant. A strong positive linear correlation was found between the Cd concentration in leaves at 77 days after planting and the Cd concentration in tubers at harvest, irrespecti...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::098219674a54161f67a28d2aa8dd5ed7 https://doi.org/10.1080/01904167.2011.536877 Zobrazit plný text záznamu