the soil is not that wet.. not real wetland.. almost all the soil around my land is tilled every year by old farmers and their soil is sandy and even requires some irrigation in the summer as they have zero organic matter
red -> small rivers (1m * 0,5m deep)
blue -> my land
yellow arrow -> lagoon direction - see @
http://goo.gl/maps/8aRo
my actual though is: the only way i can clean the soil in <2 years is removing (till the soil) or killing the rhizomes (poison).. and as i will not spread poison i thought about some tilling for initial planting, as i will not till all the land (too big for manual tilling and no actual access to machines), while less aggressive approaches will take ~ 3 years
(the land is not near my house and so i cant get grey waters there, i dont have animals and im only around the town at weekends.. )