Management of Salt-Affected Soils - Practices of Irrigation and On-farm Water Management - page 325

can maintain potential yield up to 6 dS/m, and the yield at EC>16 dS/m is
zero.
(21) Estimate the actual yield of a wheat genotype which is grown in a field having
EC of soil saturate (ECe) = 12 dS/m, critical salinity level above which the

yield reduction starts (EC t ) = 8 dS/m, the salinity level at which yield becomes

5.0 t/ha.
(22) A sodic soil has an ESP of 30 and CEC of 20 meq/100 g soil. Calculate the
amount of gypsum required to reduce the ESP to 12 at a depth of 30 cm.

zero (EC 0 ) = 20 dS/m, and potential yield in a nonsaline situation =

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