Hi,
Here is some economics for silver Vs Teak.
I have seen people selling Silver tree after 10 year for Rs 200 to 300 per cft.
But a fully grown Teak after 30 years will fetch atleast Rs 2500 to 2500 per cft
Assuming you harvest Silver 3 times in the period which Teak grows you would be getting around Rs 900, adding interest of the first 2 harvest total income would be 2503 +2502 +250 = 1500 to 2000 per cft based on the interest rate.
Please note that the base rate of Silver is one case, please put appropriate market rates to make it more meaningful