Alkali salinity affected

The traditional and recently proposed classification categories for salt-affected soils are given in Table 11.1. Saline (white alkali) soils are those in which plant growth is reduced by excess soluble salts. These soils can be converted to normal soils by leaching the excess salts from the plant root zone. The pH of saline soils... 

The tendency of zinc to be sorbed is affected not only by the nature and concentration of the sorbent but also by pH and salinity (Callahan et al. 1979). Zinc tends to sorb more readily at a high pH (pH>7) than at a low pH (Callahan et al. 1979). Desorption of zinc from sediments occurs as salinity increases (Helz et al. 1975), apparently because of displacement of the adsorbed zinc ions by alkali and alkaline earth cations, which are abundant in brackish and saline waters (Callahan et al. 1979). 

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