disinfecting seeds - was Import permits

Joseph Kraatz plantnut@cox.net
Sat, 23 Feb 2013 10:49:49 PST
This has been an interesting conversation.   But it seems to center on the actual importation of plant material, seeds, etc.   However there is a situation that I was personally involved with.   I originally owned a hardware/glass retail store.    I used to purchase the window glass in crates from wholesalers in the U.S.  They usually weighed about 2000 lbs.   Were delivered with a truck that had a small crane for unloading.    This glass was all manufactured in China, Taiwan, etc.  It was amazing when we would open up the crates the bizarre insects that would come running out.  A couple of times I saw spiders that were like something from a science fiction movie.  The crates were all from native trees in the country of origin of the glass.   I have often wondered how many species of insects are introduced into this country because of packing in wooden crates.  They are not fumigated or inspected.   When I see the thousands of containers being delivered into Los Angeles harbo
 r from every country in the world I can only imagine the critters that are inside sometimes.   Joe

On Feb 23, 2013, at 9:49 AM, Karl Church <64kkmjr@gmail.com> wrote:

> Richard, as a Master Gardener, I agree whole heartedly with your
> suggestions.
> Karl Church
> Dinuba, CA
> Zone 9a
> On Feb 23, 2013 9:40 AM, "Richard" <richrd@nas.com> wrote:
>> Gastil
>> I usually weigh in on this issue now and then because I am concerned the
>> regulatory system has holes as large as the current gun control debate.
>> Seriously, I would not accept bulbs or live plant material from California
>> regions flagged with Sudden Oak Death, unless is certified clean. I had a
>> conversation at the Berkley get together that left me gasping. A couple
>> growing and distributing bulbs that had their rhododendrons die.
>> I have received seed from overseas shipped 'under the radar' that included
>> large pieces of debris and also from the exchanges. We were briefed by
>> APHIS in spring 2012 and I asked directly about moving seed around. They
>> are not concerned about clean seed but were about debris. However in some
>> species there are seed borne diseases ie smut in grains etc, so some
>> research is advised. In context of sudden oak death APHIS is not concerned.
>> However since we collect seed from wild, California to Montana to
>> Washington we are very careful how we handle our seed cleaning debris.
>> Ours, including fruit pulp all goes to the burn pile. Liquids are washed
>> into a septic system.
>> Once the seed is clean a chlorox wash then water rince, would be a wise
>> practice. For some of our seed going into stratification we dip in captan
>> and ridomil to eliminate molds during strat. This works very good.  If the
>> seed is clean and no signs of soil or vegetative debris I would go ahead
>> and sow if it is local seed.
>> Richard Haard, Propagation Manager
>> Fourth Corner Nurseries
>> 5652 Sand Road
>> Bellingham, Washington, 98226.
>> 360 592 2250
>> cell 360 201 5174
>> http://fourthcornernurseries.com/index.html
>> On Feb 23, 2013, at 8:51 AM, "M. Gastil-Buhl" <gastil.buhl@gmail.com>
>> wrote:
>>> Hi Richard,
>>> I took what you wrote to heart. Your precautions for your nursery
>>> sound wise.
>>> You wrote "let the regulatory system function."
>>> My intention in writing to pbs about import permits was to encourage
>>> people to play the game by the rules, to get a permit.
>>> I am so sorry if what I wrote implied I was suggesting anyone bypass
>>> the regulatory system.
>>> Of the 3 orders I have imported, all 3 got to me without any apparent
>>> miss-handling.
>>> The most recent was mailed from South Africa on Feb 4 and arrived at
>>> my door Feb 18, having been forwarded from the Plant Inspection
>>> Station in San Diego.
>>> The imported seeds are subject to inspection for prohibited species.
>>> And I certainly do not want my neighbors to import an Oxalis pes-
>>> caprae that sets seeds, for example.
>>> But maybe the biggest danger is from the smallest organisms, microbes.
>>> You mention taking care to dispose of the "debris collected in the
>>> seed cleaning process".
>>> But I guess that microbes on pods or chaff may have already inoculated
>>> the seeds.
>>> I wonder if perhaps I should request the seeds be treated prior to
>>> export, when that is available.
>>> Would you recommend treatment of seeds upon receipt with a dry
>>> fungicide powder?
>>> Or would a brief bleach soak and rinse just prior to sowing be
>>> sufficient?
>>> Or is that unnecessary?
>>> - Gastil
>>> _______________________________________________
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