Plant species best suited for the rehabilitation of saline-sodic soils comprise:__________?
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Answer: A. Casuarina equisetifolia
Explanation
Casuarina equisetifolia is a highly salt-tolerant tree species adapted to harsh coastal conditions. Its physiological traits allow it to thrive and survive in challenging saline-sodic soil environments. Planting this species helps lower soil salinity and improves biological conditions over time. Saline-sodic soils contain high levels of soluble salts and excessive exchangeable sodium ions. Reclaiming such degraded soils often requires biological interventions alongside chemical amendments. Halophytic trees possess specialized salt-exclusion and compartmentalization cellular mechanisms.
Forestry projects utilize Casuarina species to reclaim degraded coastal lands and prevent soil erosion. Bio-remediation programs transform barren saline landscapes into productive agroforestry ecosystems. Selecting salt-tolerant flora is crucial for successful afforestation in arid and semi-arid regions. Option B is Albizia lebbeck, a useful tree that lacks the extreme salt tolerance of Casuarina. Option C is invalid because Albizia lebbeck is not primarily adapted for severe saline-sodic soils. Option D is incorrect since Casuarina equisetifolia is a well-documented reclamation species.
- Subject
- Agriculture
- Category
- Agriculture
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- —
- Difficulty
- medium
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