APFIVE Irrigation and Soil Salinization
After 15 years of using flood irrigation in an arid region, a farmer observes decreasing crop yields despite increased fertilizer application. Soil tests reveal high electrical conductivity. Which of the following processes best explains these findings?
A
Acidification from nitrogen-based fertilizers
B
Soil compaction from heavy machinery
C
Eutrophication from excess fertilizer runoff
D
Salinization from salt accumulation after water evaporation
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