A Homemade Life
Welcome to Homemade Life.

To take full advantage of everything offered by our forum, please log in if you are already a member or join our community if not ....

Chilli-head
Who is online?
In total there are 2 users online :: 0 Registered, 0 Hidden and 2 Guests

None

Most users ever online was 62 on 10th April 2015, 8:24 am
Latest topics
» Knitting in the round
by Chilli-head Today at 6:08 pm

» Endangered crafts
by Dandelion Today at 5:43 pm

» Chairs 4 & 5: The lath back / banister back
by FloBear Today at 8:47 am

» Seed swap anyone?
by FloBear 16th February 2018, 8:48 am

» What are you harvesting today?
by Chilli-head 12th February 2018, 7:52 pm

» New beginnings in the February garden.
by Chilli-head 1st February 2018, 12:38 pm

» The gardener's yearbook
by Chilli-head 1st February 2018, 10:38 am

» Garden Organic
by Dandelion 26th January 2018, 7:24 pm

» New arrivals
by Dandelion 23rd January 2018, 2:48 pm

» A fresh start to 2018 in the January garden
by Dandelion 13th January 2018, 11:23 pm

» More mead ...
by Chilli-head 10th January 2018, 12:47 pm

» What can *I* do ?
by Dandelion 7th January 2018, 10:20 pm

» Seed Banks and reliable suppliers
by freebird 7th January 2018, 9:37 pm

» Left-overs
by Dandelion 5th January 2018, 10:26 pm

» Recycling Christmas
by Dandelion 5th January 2018, 1:09 pm

» Trumpington wassail
by FloBear 4th January 2018, 4:35 pm

» It's now more difficult to dispose of plastic waste
by Dandelion 1st January 2018, 12:12 pm

» Turkey leftovers Mexican style
by Chilli-head 28th December 2017, 12:08 pm

» School visit
by Dandelion 26th December 2017, 11:59 am

» Two minute beach clean
by FloBear 15th December 2017, 10:10 am

Statistics
We have 633 registered users
The newest registered user is SoberWatersRetreat

Our users have posted a total of 45191 messages in 2347 subjects
Similar topics
HML on FaceBook
RSS feeds



Donate to our Charity
The Homemade life supports Kiva - microloans for people in developing countries working to change their lives.  These loans are repaid to our KIVA account, so your donation is used many times to help different people - literally the gift that keeps on giving..

Bio herbicides

Go down

default Bio herbicides

Post by Chilli-head on 16th May 2011, 11:13 am

I've just come across the idea of Bio-herbicides, which is a new one on me. In particular, pelargonic acid. This is a fatty acid present in various plants (in particular pelargoniums). It's (non-selective) effect is to disrupt the waxy cuticle covering the leaves of plants, and thus leaving them to desiccate. As such it may be effective against waxy leaved weeds which are less vulnerable to other herbicides.

Now, there is some debate about whether this should be allowable in Organic growing, as (like pyrethrins, for example) it is a natural plant extract. Now, I wonder what to think of this. For the home-grower, I can see little need for herbicides at all, but in large scale growing perhaps there is a place - given that the last act before entering into conversion to organics is often spraying off with glyphosate. But I do feel a bit uneasy about the argument that it should be OK for organic farming because it is a natural plant extract. So of course are nicotine and curare.

What do you make of it ?
avatar
Chilli-head
Admin and Boss man

Posts : 2454
Join date : 2010-02-23
Location : Bedfordshire

Back to top Go down

default Re: Bio herbicides

Post by Compostwoman on 16th May 2011, 12:29 pm

Hmmm. In principle I think a qualified yes to "natural" remedies but yes actually they can be just as toxic to other life as the synthetic based ones. The only thing is the natural ones tend to bio accumilate less AND degrade rapidly.

But as you say, there are some very nasty "natural" remedies.

Will have to have a think. bigthink

Compostwoman

Posts : 5689
Join date : 2009-11-08

Back to top Go down

default Re: Bio herbicides

Post by Mike on 17th May 2011, 4:26 pm

Perhaps should note that there are a few plants that practice chemical warfare against the competition. Since this is the permaculture section, an obvious example would be black walnut (excellent/valuable timber; the nuts are tasty but the shells much harder to open/extract the nut meats than the walnuts with which you are more familiar).

................................................................................................................................
There is no possibility of social justice on a dead planet except the equality of the grave.
avatar
Mike

Posts : 485
Join date : 2009-11-08
Age : 73
Location : Step by Step Farm, Berkshire Mtns, Massachusetts, USA

Back to top Go down

default Re: Bio herbicides

Post by Adrian on 17th May 2011, 8:09 pm

The also secrete Juglone, also called 5-hydroxy-1,4-naphthalenedione which inhibits certain enzymes needed for metabolic function in other plants. If memory serves, there are only a few species that can resist this mainly Betula and Acer (Beech and Maple)

................................................................................................................................
Paradise Papercraft
Etsy shop
avatar
Adrian
Founder and crotchety old git who wanders around in a threadbare dressing gown muttering

Posts : 2951
Join date : 2009-11-06
Age : 48
Location : Paradise, Nova Scotia

http://www.paradisepapercraft.ca

Back to top Go down

default Re: Bio herbicides

Post by Sponsored content


Sponsored content


Back to top Go down

Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum