Health & Environmental Research Online (HERO)


Print Feedback Export to File
8345574 
Book/Book Chapter 
Inorganic equilibria affecting micronutrients in soils 
Lindsay, WL 
2018 
wiley 
Micronutrients in Agriculture 
89-112 
English 
This chapter examines the inorganic solubility relationships of micronutrients in soils. Iron (Fe) oxides play a dominant role in governing Fe solubility in soils. Manganese (Mn) solubility in soils can be limited by various Mn minerals, including oxides and the carbonate. The solution chemistry of Mn is dominated by Mn 2+, with neither solution complexes, hydrolysis species, nor redox changes altering this fact significantly. Zinc (Zn) complexes can increase the solubility of Zn over that of free Zn 2+. The enhanced solubility of copper (Cu), along with stronger affinity of Cu 2+ for uptake carriers that transport ions across cell membranes, may account for the greater uptake of Cu by plants. Few studies have been conducted that attempt to identify solid-phase controls on boron solubility in soils. The exact minerals that control solubility of molybdenum (Mo) are unknown, but PbMo0 4 has been suggested as a possibility. © 1991 Soil Science Society of America. 
Boron solubility; Inorganic solubility relationships; Iron oxides; Manganese solubility; Micronutrients; Molybdenum solubility; Zinc complexes