Attempts to Leach the Excess Salts from a Saline-Sodic Soil

question 16

Multiple Choice

Attempts to leach the excess salts from a saline-sodic soil resulted in a marked reduction of crop yields.To what is this most likely due?

• A)deficiency of iron and manganese
• B)increase in percentage sodium saturation
• C)removal of Ca²⁺ and Mg²⁺ ions from the exchange complex
• D)increase in the soil pH
• E)increase in the Al³⁺ concentration

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