Lateritic wetland soils of kerala

Iron toxicity and acidity are the major constraints in the laterite derived paddy soils of Kerala. More than 90 % of the midland lateritic rice soils in the northern part of Kerala are strongly acidic in reaction with pH values in the range of 4.5 to 5.5. The content of 0.1 N HCl extractable Fe in soil varied from 52.21 – 414.9 mg kg-1 and more than 50 % of the rice soils showed iron toxicity problem (> 250 mg kg-1 of available iron).

10p caygaocaolon6 30-07-2020 23 1   Download