Availability of Cadmium and Zinc as Affected by the Use of Reactive Phosphate Rock, Lime, and Chicken Manure on an Indonesian Acidic Upland Soil under Field Conditions

• Published in: Communications in Soil Science and Plant Analysis 2010-01, Vol.41 (16-19), p.1986-2003
• Main Authors: Rochayati, Sri, Verloo, M, Du Laing, G
• Format: Article
• Language: English
• Subjects: Acidic upland soil; Agronomy. Soil science and plant productions; Biological and medical sciences; Cadmium; Chemical, physicochemical, biochemical and biological properties; fertilizer; Fundamental and applied biological sciences. Psychology; liming; Manures; metal availability; Organic matter; phosphate rock; Physics, chemistry, biochemistry and biology of agricultural and forest soils; Soil and water pollution; Soil science; Zea mays; Zinc
• ISSN: 0010-3624; 1532-2416; 1532-4133
• DOI: 10.1080/00103624.2010.495808

We assessed cadmium (Cd) and zinc (Zn) availability when applying reactive phosphate rock (RPR) in combination with lime and chicken manure on Indonesian acidic upland soils. Maize plants were grown on unamended soil and soils treated with several combinations of 2 tons dolomite ha-1, 2 tons of chicken manure ha-1, 1 ton ha-1 of RPRL (reactive phosphate rock containing 4 mg Cd kg-1 and 224 mg Zn kg-1), and 1 ton ha-1 of RPRH (RPR containing 69 mg Cd kg-1 and 745 mg Zn kg-1). In addition to its positive effect on plant yield, application of RPR in combination with chicken manure did not result in toxic Cd concentrations. Although liming is effective to reduce plant Cd concentrations, it results in more soil Cd accumulation and more plant Zn deficiency. Cadmium and Zn concentrations in shoots and grains can be predicted well from amounts extracted from the soil by 0.5 M ammonium (NH4) acetate + 0.02 M ethylenediaminetetraacetic acid (EDTA) at pH 4.65.