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The mission of the International Association of Bryologists (IAB), as a society, is to strengthen bryology by encouraging interactions among all persons interested in byophytes.

Wednesday, December 16, 2009

[BRYONET] pre-emergent herbicide

-------- Original Message --------

From: David Wagner <>
Subject: Re: BRYONET: pre-emergent herbicide
Date: Tue, 15 Dec 2009 22:54:14 -0800

Some offline comments indicated my suggestion of steam as an ideal
herbicide was funny or a joke.

Maybe funny, indeed, but I am serious. There are several devices which
use steam to prepare a seed bed.

In my memory from years ago--I mean decades--is a picture in National
Geographic magazine of Amish farmers in the Midwest using an ancient
steam tractor. They would drive the tractor to the field, and then
connect a large pipe from the tractor's boiler to a metal box about 4
feet by 6 feet by 6 inches high. Tamp the box around a patch of
carefully prepared planting soil. An hour or so of steam from the
tractor's boiler would completely sterilize the upper few inches of a
good sized seed bed. Non toxic yet very effective.

On Dec 15, 2009, at 5:25 PM, Diego Knop Henriques wrote:

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