Effect on soil and plant mineral levels following application of manures of different copper contents

Effects of inorganic v. organic copper on denitrification in agricultural soil

“…Adriano (2001) compared the affinity of a series of metals to OM and reported that Cu is the metal most strongly complexed with OM. Kornegay et al (1976) found Cu to be immobile in soil with high OM due to the complexation of Cu by OM. Several other researchers noted that Cu in organic soils is held tenaciously by the OM (Gilbert, 1952;Jones, 1967;Gigliotti et al, 2009;He et al, 2011).…”

Role of organic amendments on enhanced bioremediation of heavy metal(loid) contaminated soils

“…They reported that the potential soil arsenic increase rates resulting from land application of pig manure might range between 11.8 g kg −1 year −1 and 78.9 g kg −1 year −1 based on the loading rates of pig manure of 2.7-57.2 t ha −1 year −1 . Similarly, Kornegay et al [65] examined the distribution of Cu in soils that received swine manure with low (59-88 mg kg −1 ) and high (1180-2810 mg kg −1 ) Cu concentrations, the latter was caused by feeding swine with Cu-enriched feed. Expectedly, there was a 3-to 4-fold increase in ethylenediamine tetraacetic acid (EDTA)-extractable Cu concentration in soils treated with Cu-enriched manure, indicating the dominance of Cu-organic matter complexes.…”

A risk-based decision tool for the management of organic waste in agriculture and farming activities (FARMERS)

“…These pollutants come mainly from nutritional supplements of trace minerals aimed at improving health and productivity of animals [28] and can also be present in some animal fodder. Usually, these supplements are administered in excess, and the surplus is excreted by the animal through urine or faeces [29]. Therefore, metals end up in manure, reaching significant high concentrations [30].…”