carbon cycle-la carbon gas-aaga move panradhu, phosphorus sedimentary rocks-la thaan irukku. ana enakku theriyum phosphorus shortage nu solradhu overstatement. naan field survey pannumbothu, Tamil Nadu soil-la phosphorus content romba correct-a irukku, fertilizer company sonna maadhiri deplete aagala. adhanaala, nambala farmers traditional manure use panna, artificial phosphorus shortage varadhu.
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