|Statement||by C. B. Lipman, and P. S. Burgess.|
|Series||University of California publications in agricultural sciences -- v. 1, no. 6|
|Contributions||Burgess, P. S. 1885-|
|The Physical Object|
|Number of Pages||139|
The effects of adding , 1,, ppm of copper, manganese, zinc and chromium as sulphates and of copper and zinc as carbonates on ammonification and nitrification during incubation (3) weeks) of an initially neutral soil under aerobic and anaerobic conditions were by: Effect of contamination with copper and some amendments on trace elements in soil level of soil contamination with copper ( mg Cu/kg) reduced the content of lead by 13%, iron by 15%, manganese by 20%, zinc by 27%, nickel by 48% and cobalt by 75%. The changes in the concentrations of lead, nickel, cadmium, copper and zinc in roadside soils are frequently attributed to traffic density. Standard agricultural practices are also a significant source of heavy metals in soils, as application of fertilizers and pesticides has contributed to a continuous accumulation of these by: Soil water extracts were subjected to chemical speciation to determine the relative distribution and chemical forms of copper (Cu), zinc (Zn) and lead (Pb) in acidic environments. As pyrite oxidised, the pH decreased from to , concentration of dissolved sulfate (ST).
The effects of adding and 1, p.p.m. of Cu2+, Zn2+, and Cr3+ (sulphates) on mineral-nitrogen levels after 1 and 8 weeks of aerobic incubation of Cited by: 2. Excessive amounts of cadmium, copper and zinc disrupt the homeostasis of soil by interfering with the control mechanisms on the level of genes, thus inhibiting the activity of . INTRODUCTION. Copper contents of the majority of plant species varies between 20 and 30 mg kg-1 dry weight. The critical copper deficiency level in vegetative plant parts is generally 3 to 5 mg kg-1 dry weight (Robson & Reuther, ); in young grain plants it was reported to be mg kg-1 dry weight (Robson et al., ).. Copper is an essential element for various metabolic . An ammonification is the formation of ammonia or its compounds from nitrogenous compounds, or the treatment or impregnation of something with ammonia. Ammonification is release of ammonia from amino acids during the decomposition of proteins. Bacteria that causes Ammonification is Bacillus ramosus.
In general, soil pH seems to have the greatest effect of any single factor on the solubility or retention of metals in soils, with a greater retention and lower solubility of metal cations occurring at high soil pH (Cavallaro and McBride, , Cavallaro and McBride, , Harter, , Garcia-Miragaya, , Stahl and James, , Basta et al., ).Cited by: Phosphorus and zinc measurements in Kjeldahl digests. Analytical Biochemistry , 60 (2), DOI: /(74) D.A. Stanton, T. Burger. A rapid polarographic method for the determination of zinc in siol extracts and plant-ash by: The adverse influence of cadmium, copper and zinc on microorga-nisms and enzymes can be alleviated by application of organic and natural fertilizers. For soil phytoremediation, microorganisms resistant to these metals but enhancing their ava-ilability can be used. Key words: cadmium, copper, zinc, plants, microorganism, enzymes. Copper and zinc accumulation in manured soils. What’s Cropping Up? 15(5): 1 Copper and Zinc Accumulation in Manured Soils E. Brock, Q.M. Ketterings, and M. McBride Department of Crop and Soil Sciences Considerable research in the past years has focused on how manure applications affect soilCited by: 2.