Cardamine hirsuta

Having used roundup on a commercial scale for many years let me make some
comments. First roundup is something like a synthetic sugar. To work the
plant has to absorb the roundup through pores in leaves and sometimes green
stems.Once inside the plant it poisons it inside out. It is not absorbed
through woody tissue or tree bark. ROUNDUP DOES NOT STIMULATE THE GROWTH OF
SEEDS!! In nature many grasses give off chemicals from the roots that inhibit
the germination of other weed seeds. When you spray your area that is
probably loaded with grass the seed inhibitor quits being produced. That is why
you suddenly have an explosion of other baby weeds sprouting. If you call
the makers of roundup( Monsanto chemicals) they will tell you that after
about one week any roundup in the soil disintegrates into "nothing". It turns
into a harmless nontoxic chemical. It drives me crazy when I hear goofy
stories like roundup stimulating seed germination because it does not! I do
not know where theses stories start but lets get are facts straight.
Many times after I used roundup in an area rain will wash it off the
leaves. It needs some hours to penetrate into the leaf pores ( called stomata).
I have found the premixed sol MON .makes doesn't work very well . Buy a
quart of the concentrate and mix to direction and add one teaspoon of dawn for
dishes to the mixture. Spray away. You must wet the leaves for this to
work.. Now if you are healthy and have A LOT OF FREE TIME you can remove weeds
by hand. Have you ever hand removed weeds from 1/4 acre. It will give you a
new outlook on life and help prepare you for the Olympics! After you
almost drop dead trying this method you will find why a lot of people grow their
plants in pots. Use steam sterilized potting mix and you will kill any
weeds in the mix. The mix can also be gently heated in an old turkey roasting
pan in the oven.
Let me add I greatly admire people that hand weed. It is good exercise
and harmless to nature. I truly hope I have not offended anyone but we must
get our facts straight. There are some very nasty weed/bug killers out there
and I don't care to poison the area where I live. If anyone needs help
with the use of chemical weed killers they may contact me. As a retired
commercial grower I am sure there isn't anyone in our group with more experience
using them. Just imagine controlling weeds on 75 acres.Russ H. at
jadeboy48@aol.com

In a message dated 4/1/2013 2:55:37 P.M. Pacific Daylight Time,
ds429@comcast.net writes:

Dear Christian,

Just today an amateur gardener friend asked me to identify a plant that
was beginning to invade his yard from his neighbors. It is our local
Cardamine sp. C. bulbosa? Here it is called "bitter cress." It is one of the
nastiest weeds that I have encountered here. I do not use Roundup, but I have
found that hand weeding has some effect on it. The problem with our species
is that, if you don't root it out before it goes to seed, you have lost the
battle because it shoots out the seeds when the pods are ripe.

I would eat it , except that it is extremely bitter, even when it is
young.

And if I had an infestation of Worsleya, especially the white one, or of
the pink Pamianthe, or the red Hymenocallis, I think I would probably also
choose hand weeding.

Dell in SE Pennsylvania

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

From: "Christian Lachaud" <christian.lachaud@gmail.com>
To: pbs@lists.ibiblio.org
Sent: Monday, April 1, 2013 5:22:21 PM
Subject: [pbs] Cardamine hirsuta

Dear all,

I would like to ask your advise about Cardamine hirsuta.

Few gardener friends and I have noticed that roundup herbicide activates
the seeds of Cardamine hirsuta, that are asleep in the soil (by the way, I
ignore how long the seeds of this plant survive asleep).

In areas that were free of Cardamine the previous years, treated with
roundup during the summer, a dense population of this plant is sure to be
found next spring. However, this burst has nothing to do with cleanness of
the area after herbicide application, because other places manually weeded
will never exhibit the phenomenon. Roundup application and Cardamine
infestation is so highly correlated that people here use to say that
roundup "makes it come".

I know that there has been some cases of genetic pollution from GMO into
wild species through pollen. I ignore if some GMOs requiring roundup to
get
their seeds activated do exist ? If yes, wouldn't this example be one such
case of genetic pollution accident ? Have people observed this phenomenon
elsewhere in the world ?

It is worth asking the question since some people eat Cardamine hirsuta
and
advertise it as delicious. However, if it had been turned accidentally
into
a wild GMO requiring roundup to wake up and grow, would it be that safe
for
human health ?

Any comments, ideas, and tracks will be much appreciated - Many thanks.

*Dr. Christian M. Lachaud, PhD*
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