EFFECT OF SALINITY, ALKALINITY AND IRON SOURCES ON AVAILABILITY OF IRON

The availability of iron from added iron sources was studied in normal and salt affected soils in the laboratory. All forms of iron decreased with increase in salinity and alkalinity, the lowest amount being recorded in 8 E.Ce+40 ESP soil. All the forms of iron in all the soils decreased gradually with increase in incubation period. Addition of iron in organic and inorganic forms increased all the forms of iron in all the soils. In general, iron Ke-Min and Rayplex were better in keeping higher iron availability for longer time. © 1979 Martinus Nijhoff, The Hague.