From Patrick Denny
My concern is with the increased pressure for chemical control of the water
hyacinth. The plants will not be eradicated, merely reduced. As Pearce explains,
the water hyacinth is one of the fastest-growing plants in the world (and, as a
native of South America, is without enemies in Africa). It will therefore regrow
with vigour, fed by the nutrients from the recently sprayed, dead vegetation.
Then it will have to be sprayed again, and again . . . The spray manufacturers
will be laughing all the way to the bank.
Delft, The Netherlands
