List of top Agricultural Engineering and Technology Questions on Reclamation of Salt Affected Soils

Alkali soils/sodic soil have
(A). Very high permeability
(B). Salts dominated by bicarbonates, carbonates and silicate of sodium.
(C). pH greater than 8.5.
(D). Electrical conductivity greater than 4 dS/m.
(E). Exchangeable Sodium Percentage is greater than or equal to 15.

Choose the correct answer from the options given below:

A quantity of 100 ml gypsum solution having 36 meq/l concentration as calcium, on reacting with 5 gm of an alkali soil showed 32 meq/l of Ca+Mg concentration in the filtrate. Estimate the gypsum requirement in meq/100 gm of soil.