Effect of potassic and phosphatic fertilizer type, fertilizer Cd concentration and zinc rate on cadmium uptake by potatoes

McLaughlin, M J and Maier, N A and Freeman, K and et al, . (1995) Effect of potassic and phosphatic fertilizer type, fertilizer Cd concentration and zinc rate on cadmium uptake by potatoes. Nutrient Cycling in Agroecosystems (formerly Fertilizer Research), 40. pp. 63-70.

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Abstract

In some areas of southern Australia, cadmium (Cd) concentrations in excess of the Australian maximum permitted concentration (0.05 mg k g - 1 fresh weight) have been found in tubers of commercially grown potato (Solanum tuberosum L.) crops. Field experiments were therefore conducted in various regions of Australia to determine if Cd uptake by potatoes could be minimised by changes in either phosphorus (P), potassium (K) or zinc (Zn) fertilizer management. Changing the chemical form in which either P fertilizer (monoammonium phosphate, diammonium phosphate, single superphosphate and reactive rock phosphate) or K fertilizer (potassium chloride and potassium sulfate) were added to crops had little influence on tuber Cd concentrations. Fertilizer Cd concentrations also had little influence on tuber Cd concentrations, suggesting that residual Cd in the soil was a major contributor to Cd uptake by the crops on these soils.

Item Type: Article
Additional Information: We thank the Horticultural Research and Development Corporation, the Australian Potato Industry Council and the Fertilizer Industry Federation of Australia for their support of this work. We also thank the commercial growers on whose properties these trials were conducted and Katy Sellar and Mark Butt for their technical assistance on this project.
Uncontrolled Keywords: cultivar, food regulations, salinity
Author Affiliation: CSIRO Division of Soils/CRC for Soil and Land Management, PMBNo.
Subjects: Plant Protection
Divisions: Other Crops
Depositing User: Mr Siva Shankar
Date Deposited: 27 Mar 2012 06:33
Last Modified: 27 Mar 2012 10:59
URI: http://eprints.icrisat.ac.in/id/eprint/4235

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