A farmer started irrigating a soil some 10 years ago but in recent years yields have declined and the soil physical condition has deteriorated.Which of the following most likely accounts for this situation?
A) high content of Ca and Mg in the irrigation water
B) failure to use conservation tillage to reduce salt accumulation at the soil surface
C) high SAR of the irrigation water
D) excessive drainage of the soil
E) high gypsum content in the soil
Correct Answer:
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