Sodium & Salt

1.    Corn is irrigated with water containing 1050 ppm of salt.
a.    How much yield can be expected if the yield in the absence of excess salinity is 200 bu/ac?

b.    What is the leaching requirement?

c.    What is the salinity of water leaching below the root zone?

Na    Ca    Mg
210 cmolc/L    20 cmolc/L    10 cmolc/L

2.    A soil saturated paste contains

a.    What is the soil SAR?

b.    What is the soil ESP?

c.    Is this soil likely to be flocculated or dispersed? Why?

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