Skip to Content.
Sympa Menu

market-farming - [Market-farming] vermicompost

market-farming AT lists.ibiblio.org

Subject: Market Farming

List archive

Chronological Thread  
  • From: "Sandy Charles" <sandycharles AT comcast.net>
  • To: <market-farming AT lists.ibiblio.org>
  • Subject: [Market-farming] vermicompost
  • Date: Fri, 6 Jan 2012 13:46:09 -0700

Hi Andy,

I've been using vermicompost tea in my subterranean heated high tunnel for two seasons now. I grow greens throughout the winter here in Colorado and have had great results with sustained growth, even in the short days of winter. No diseases either so far. Since I'm only in my second season and it's my first high tunnel I don't have anything to compare with, but I harvest greens weekly, from November through May. I'm a believer in their merits so far...

Sandy
zone 5
----- Original Message ----- From: <market-farming-request AT lists.ibiblio.org>
To: <market-farming AT lists.ibiblio.org>
Sent: Friday, January 06, 2012 10:01 AM
Subject: Market-farming Digest, Vol 108, Issue 10


Send Market-farming mailing list submissions to
market-farming AT lists.ibiblio.org

To subscribe or unsubscribe via the World Wide Web, visit
http://lists.ibiblio.org/mailman/listinfo/market-farming
or, via email, send a message with subject or body 'help' to
market-farming-request AT lists.ibiblio.org

You can reach the person managing the list at
market-farming-owner AT lists.ibiblio.org

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Market-farming digest..."


Today's Topics:

1. Re: sweet corn - Bt resistance? (Road's End Farm)
2. Re: sweet corn - Bt resistance? (Shoemaker, William H)
3. vermicompost (Andy Fellenz)


----------------------------------------------------------------------

Message: 1
Date: Thu, 5 Jan 2012 14:14:17 -0500
From: Road's End Farm <organic87 AT frontiernet.net>
Subject: Re: [Market-farming] sweet corn - Bt resistance?
To: Market Farming <market-farming AT lists.ibiblio.org>
Message-ID: <08E283E8-D90D-4988-8745-2351BAC6BA87 AT frontiernet.net>
Content-Type: text/plain; charset="us-ascii"

BT kurstaki etc. applied as a spray or a dust is only present in the
field for a short period of time after each application. GMO plants
expressing BT toxin do so continuously throughout the season, and with
probable residue remaining in the field for some time after harvest.
The latter situation is likely to produce resistance much faster.


-- Rivka; Finger Lakes NY, Zone 5 mostly
Fresh-market organic produce, small scale



On Jan 5, 2012, at 2:05 PM, <sunnfarm AT netscape.com> wrote:

I have used BT since 1972 and BT kurstaki or Dipel is just as
effective today as it was 40 years ago. I can not name a single
synthetic that has been resistance free for 10 years yet alone 40.
Bt is a natural product and must have evolved along with the insects
it controls. That is millions of years of exposure.
Even before gmo's BT was applied to millions of acres annually
without resistance. So I don't think there will be any resistance
anytime soon with Bt corn. Keep in mind that corn worms have many
host plants to preserve there susceptibility to the toxin.... Bob.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.ibiblio.org/sympa/arc/market-farming/attachments/20120105/1198c88e/attachment-0001.html

------------------------------

Message: 2
Date: Thu, 5 Jan 2012 19:29:30 +0000
From: "Shoemaker, William H" <wshoemak AT illinois.edu>
Subject: Re: [Market-farming] sweet corn - Bt resistance?
To: Market Farming <market-farming AT lists.ibiblio.org>
Message-ID:
<5A85FA1DC3DB524491801C112E78A57304EE5584 AT chimbx3.ad.uillinois.edu>
Content-Type: text/plain; charset="iso-8859-1"

Good point. There is another problem for resistance development with worm-resistant Bt corn; scale of exposure. The Bt corn varieties have refuge requirements. I believe it is 25% of the acreage that must be planted to non-Bt corn to preserve a portion of the pest population. That may seem counter-intuitive but the idea is to keep the non-resistant pest population healthy so that any resistance genes that emerge are diluted and masked by the non-resistant portion of the pest population as they interbreed. The problem is that farmer compliance with refuge requirements isn't as good as it should be, especially over the last couple of years. So when farmers used Bt dust they were limiting exposure to the pest in a number of ways. Other farmers use other pesticides on the same pest population. The pest may not be exposed in each generation. There may be lots of acreage of other crops the pest can thrive on. Or there may be an abundance of native plants that support the pest popul
ation (tomatoes and their nightshade relatives for example). In the end, there are 10's of millions acres of Bt corn planted. The scale itself increases risk for resistance development.



Its important to note that use of Bt on one pest does not influence resistance development for another unrelated pest. If they don't interbreed, they don't pass resistance genes.



Bill

William H. Shoemaker

University of Illinois, Crop Sciences

St Charles Horticulture Research Center

535 Randall Road, St Charles, IL 60174

630-584-7254, wshoemak AT illinois.edu<mailto:wshoemak AT illinois.edu>

________________________________
From: market-farming-bounces AT lists.ibiblio.org [market-farming-bounces AT lists.ibiblio.org] on behalf of Road's End Farm [organic87 AT frontiernet.net]
Sent: Thursday, January 05, 2012 1:14 PM
To: Market Farming
Subject: Re: [Market-farming] sweet corn - Bt resistance?

BT kurstaki etc. applied as a spray or a dust is only present in the field for a short period of time after each application. GMO plants expressing BT toxin do so continuously throughout the season, and with probable residue remaining in the field for some time after harvest. The latter situation is likely to produce resistance much faster.


-- Rivka; Finger Lakes NY, Zone 5 mostly
Fresh-market organic produce, small scale



On Jan 5, 2012, at 2:05 PM, <sunnfarm AT netscape.com<mailto:sunnfarm AT netscape.com>> wrote:

I have used BT since 1972 and BT kurstaki or Dipel is just as effective today as it was 40 years ago. I can not name a single synthetic that has been resistance free for 10 years yet alone 40. Bt is a natural product and must have evolved along with the insects it controls. That is millions of years of exposure.
Even before gmo's BT was applied to millions of acres annually without resistance. So I don't think there will be any resistance anytime soon with Bt corn. Keep in mind that corn worms have many host plants to preserve there susceptibility to the toxin.... Bob.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.ibiblio.org/sympa/arc/market-farming/attachments/20120105/f14e3e1e/attachment-0001.html

------------------------------

Message: 3
Date: Fri, 6 Jan 2012 11:13:11 -0500
From: Andy Fellenz <artisanfarms AT gmail.com>
Subject: [Market-farming] vermicompost
To: Market Farming <market-farming AT lists.ibiblio.org>
Message-ID:
<CACdR-RGVCOUVsHU8=qEgc9kJaZmf4G6khe1nn4wojxAj6P6foA AT mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi,

Anyone making their own vermicompost or compost teas? I am interested in
learning more on doing both for use in the greenhouse and high tunnels.
Any experience or suggested references would be helpful/

I came across this article this morning:
http://www.news.cornell.edu/stories/Dec11/Vermicompost.html . It is nice
to see that the science is starting to catch up to anecdotal reports on the
benefits of these materials.

Andy
-------------- next part --------------
An HTML attachment was scrubbed...
URL: https://lists.ibiblio.org/sympa/arc/market-farming/attachments/20120106/e499aa5a/attachment-0001.html

------------------------------

_______________________________________________
Market-farming mailing list
Market-farming AT lists.ibiblio.org
http://lists.ibiblio.org/mailman/listinfo/market-farming

Get the list FAQ at: http://www.marketfarming.net/mflistfaq.htm


End of Market-farming Digest, Vol 108, Issue 10
***********************************************





Archive powered by MHonArc 2.6.24.

Top of Page