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Which is the least harmful salt for agricultural soil?

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+1 vote
in Irrigation Engineering by (75.2k points)
Which is the least harmful salt for agricultural soil?

(a) Na2CO3

(b) Na2SO4

(c) NaCl

(d) NaOH

I had been asked this question by my college director while I was bunking the class.

The doubt is from Reclamation of Saline and Alkaline Lands topic in chapter Water Logged Reclamation and Saline Soils for Agricultural Purposes of Irrigation Engineering

1 Answer

0 votes
by (106k points)
Right option is (c) NaCl

Explanation: NaCl is found in excess in white-alkali soils. In this, salinity is caused by soluble salts other than alkali salts. The reaction between NaCl and soil (S) produces Na(S) and Cl^– ion and the soluble products are leached away from the soil surface by drainage water.

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