Effect of fertiliser type on cadmium and fluorine concentrations in clover herbage

• DOI: 10.1071/ea96117
• Publication Date: 2004-08-05T23:52:58Z
• Authors: M. J. McLaughlin; P. G. Simpson; M. K. Smart; N. Fleming; D. P. Stevens; G. Cozens
• Keywords: Phosphorite

Summary. This study investigated whether changing phosphatic fertiliser type affects the accumulation of cadmium (Cd) and fluorine (F) in pasture herbage. North Carolina phosphate rock, partially acidulated fertilisers derived from this generally have higher Cd F concentrations compared with single superphosphate currently manufactured Australia. Clover herbage sites National Reactive Phosphate Rock trial was collected analysed for (11 sites) (4 sites). A comparison made between pastures fertilised 4 rates superphosphate, rock having 283, 481 420 mg/kg P respectively, 170, 271 274 g/kg respectively. One site used Hamrawein (Egypt) (HRP) a concentration 78 mg Cd/kg 256 g F/kg To help identify differences sites, unfertilised soils each were total extractable contents. At one bulk (clover, grasses weeds) related to infestation by capeweed (Arctotheca calendula L. Levyns). There no significant plots either or sites. Concentrations low, less than 10 mg/kg. However, there large while treatments small comparison. The only weakly (0.01 mol CaCl2/L) soil. Significant clover due found at 5 had significantly 2 Partially where tested, treatment lower both treatments.