An arborist in Albuquerque is assessing a maple tree with yellowing leaves and dark green veins (interveinal chlorosis). This is a classic symptom of iron deficiency. What is the most likely underlying soil condition in this region causing this issue?
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A
Excessive nitrogen, which inhibits iron uptake.
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B
Waterlogged soil from monsoon rains, causing root rot.
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C
Highly acidic soil, which makes iron insoluble.
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D
High soil pH (alkalinity), which makes iron unavailable to the tree.