Re: [aroid-l] Amorph Blues


On Sun, 4 Jul 2004, Dan Levin wrote:

> in a public forum, that these fungus gnat larvae are more akin
> to a nasty secondary infection and are rarely if ever the primary
> causal agent.

Locally, a commercial grower was having, for the first time, unacceptable
losses from fungal infection after deflasking orchid seedlings into
community pots. Finally, he brought in the government agricultural extension
experts who diagnose it as the gnats, with the fungi entering from root
damage. So, he sprayed with insecticide rather than fungicide and his
problem disappeared. So, which is primary and which secondary?

Cordially,   Phil

###############################################################################
Dr Phil Diamond pmd@maths.uq.edu.au
Department of Mathematics, University of Queensland, Brisbane,AUSTRALIA
4072.



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