1.

Solution for problem of salinity and alkalinity of use soil for long terma) Rock phosphate. b) Gypsumc) Compost. d) Urea

Answer»

Salt-affected soils are grouped into saline and alkali/sodic soils on the considerations of soil management and crop responses. Out of the 3.4 M ha of alkali lands in Indo-Gangetic Plains, about 1.0 M ha has been reclaimed by the hydro-chemical technology. Application of amendments like gypsum, equivalent to 50% gypsum requirement, to the surface 15-cm soil only was enough to start cropping with rice.

The answer is option B



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