According to WAPDA, the ECe of the salt free soil should remain__________________?

Related Mcqs:

Permanent change in soil is due to__________________?

A. Ionic bonding B. pH change C. Covalent bonding D. Isomorphic substitution...

Most widely spread mineral in the world is________________?

A. Iron B. Kaolinite C. Salt D. None of the above...

Mean annual precipitation for tundra region is ____________________?

A. 70-80 cm B. 150-70 cm C. 0-50 cm D. None of the above...

Extraction of humic substance can be done by______________________?

A. NaOH B. NH4Cl C. NH4OH D. None of the above...

Boron concentration is irrigation water is considered safe only upto_________________?

A. 0.7 ppm B. 1.5 ppm C. 2 ppm D. 3 ppm...