Studies in the analysis of fertiliser effects

Effect of Phosphate Fertilizers and Atmospheric Deposition on Long-Term Changes in the Cadmium Content of Soils and Crops

“…Long-term increases in soil Cd content could have major consequences in terms of increased food crop uptake of Cd; however, a brief review of the literature suggests that there is still some uncertainty in this area, in particular concerning phosphate fertilizers as a source of plant Cd. Some authors have reported a positive relationship between soil and plant Cd concentrations (8)(9)(10) especially on acid soils (5,11), although Singh (12) showed there was no simple relationship between the two. Results from several studies using phosphate fertilizers indicate that the Cd from this source is at least partially available for plant uptake (13); the Cd concentration in the fertilizer, the amount applied, soil properties, and crop species all being important variables.…”