title: [Effect of soil moisture and wetting-drying on Mn release in Ca(NO3)2-amended soils].
abstract: A study on the effects of two moisture levels (200 and 400 g.kg-1) and wetting-drying on the solubility of Mn in Ca(NO3)2-amended soils showed that water regime was a factor affecting Mn availability. Easily reducible Mn was transformed into soluble and exchangeable Mn, when soil water content was high. Salt had a definite effect on the transformation of easily reducible Mn. NO3- could decrease soil redox potential, and inhibit the transformation of easily reducible Mn. Wetting-drying significantly(alpha < 0.05) decreased the content of soil water-soluble and exchangeable Mn, while Ca(NO3)2 increased the insolubility of Mn, which might eventually lead to the deficiency of soil Mn.
authors.affiliation: Anhui Agricultural University, Hefei 230036. youbinsi@21cn.com
authors.forename: Y
authors.initials: Y
authors.lastname: Si
authors.forename: Y
authors.initials: Y
authors.lastname: Ma
authors.forename: L
authors.initials: L
authors.lastname: Zhang
mesh_terms: D017610:Calcium Compounds / Q000494:pharmacology*; D008345:Manganese / Q000378:metabolism*; D009566:Nitrates / Q000494:pharmacology*; D012987:Soil / Q000032:analysis*; D014867:Water / Q000032:analysis*
chemical_list: D017610:Calcium Compounds; D009566:Nitrates; D012987:Soil; D014867:Water; D008345:Manganese; C059948:calcium nitrate