Abstract
The objective of this greenhouse study was to evaluate Brazilian single superphosphates (SSP) in terms of their cadmium (Cd) contents and Cd bioavailability to corn plants grown in a Typic Hapludox soil. Five SSP obtained from Brazilian raw materials were studied, either in the original form or leached in order to remove the water-soluble fraction of the fertilizer. Three methods of phosphorus (P) application were used: mixing the SSP with 100, 10, and 1% of the volume of soil in the pots. The experiment was conducted in a completely randomized block design with four replications in a 5×2×3 factorial arrangement. Results demonstrated that application of high rates of bioavailable P tends to reduce plant Cd concentration mainly due to the dilution effect and that mixing the SSP with 100% of the soil volume resulted in higher Cd uptake by the plants as compared with the localized applications. The SSP sources resulted in similar plant Cd uptake. A significant difference was found only between the Catalão 1-SSP and the Tapira-SSP, which resulted in the highest and lowest Cd uptakes, respectively.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
