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Kathryn
23-01-2012, 10:51 AM
going to try this today as rain is on the horizon. couldnt find a thread on here in regards to how much to add. an abc gardening site said a few drops, i guess per litre. does anyone have a good ratio that they are nice enough to share?:Rain:

PaulG
23-01-2012, 11:46 AM
I don't know if it's worth going into the detail or but there are different surfactants for different herbicides. The generic glypho I recently bought recommends the use of a "non-ionic" surfactant.

Surfactants like Pulse for Roundup are mixed at 200ml per 100ltrs or 2ml per litre.

In saying that though, I've used household detergents without worry for glypho as they do contain some non-ionic surfactant. I add about 5ml per litre.

DavidS
23-01-2012, 01:14 PM
Kathryn just use 10ml per 5 litres, or use 10ml of vegetable oil in the roundup per 5ltrs or any other broadleaf weeder. Vegetable oil is a great surfactant.

Kathryn
23-01-2012, 04:25 PM
thank you. it rained before i could even start spraying ( not complaining) but i will add this to my bag of tricks

Tender Lovin Lawn&Garden
23-01-2012, 06:46 PM
I have used it before and it works and so does putting some diesel.

St George
23-01-2012, 07:46 PM
Sorry everyone but what does the detergent do?

Tender Lovin Lawn&Garden
23-01-2012, 07:50 PM
Just seems to make it stick to the plant and not wash off so eaisly

PaulG
23-01-2012, 08:09 PM
Put simply surfactants reduce the surface tension of the water allowing better uptake by the plant/weed. Most plants have a waxy covering called the cuticle and it this that surfactants are designed to penetrate more effectively than herbicide alone..

http://www.thanyagroup.com/research/download/25530111_2.pdf

63impala
24-01-2012, 07:14 AM
Compost tea or worm tea are good weting agents also.:cool:

Kathryn
24-01-2012, 04:01 PM
I have used it before and it works and so does putting some diesel.
you reminded me that we used to mix diesel with starane when we ran out of tordon to basal bark coffe bush. always wondered what the diesel did. now i know. cheers

Kathryn
24-07-2012, 02:43 PM
i read the sky wrong last week and sprayed for clover . just as i finished 4hours of drizzle started. not happy with myself and i promised the oner that i'd be back to respray when the weather was better.
went there today to respray and was dead impressed that the poison had worked and not just been washed off. all thanks to some washing up liquid in the mix. there'll be some in all my camba m mixes from now on

Neil&family
24-07-2012, 03:27 PM
What ratio kamba m are you using kathryn? Its been a struggle to get rid of my clover.

simo
24-07-2012, 05:23 PM
Put simply surfactants reduce the surface tension of the water allowing better uptake by the plant/weed. Most plants have a waxy covering called the cuticle and it this that surfactants are designed to penetrate more effectively than herbicide alone..

http://www.thanyagroup.com/research/download/25530111_2.pdf
Spot on Paul
also I wouldn`t recommend adding veg oil when spraying weeds in lawns, only wetting agent or dish liquid

veg oil added in round up or the like to use on garden weeds is fine

seliment
24-07-2012, 06:32 PM
Paul's comment is right on the mark.
Users should be aware and understand the difference (roles/purpose) between surfactants and penetrants (eg Pulse), all of which are known as adjuvants.
It is always good idea to follow the manufacturers recommendations.

Re products like Starane, Tordon etc... They are carried in an organic solvent that is miscible (capable of mixing with water). You will find that the manufacturer says they can be mixed with diesel (no water) for 'basal bark' application, in which case the diesel dilutes the active ingredient and allows it to be carried THROUGH THE BARK.

Glyphosate is carried in a water based solution and will not mix with diesel - they are immiscible.
I can't really see how adding diesel or veggie oil to glyphosate is going to achieve much.
Better to stick with what manufacturer suggests, and using appropriate spray droplet size and surfactant to ensure that you get a good coverage /film of chemical on the target plants and form big droplets/globules of spray which then just run off the leaves and are ineffective.

Joe

fairdinkum
25-07-2012, 05:59 AM
Put simply surfactants reduce the surface tension of the water allowing better uptake by the plant/weed. Most plants have a waxy covering called the cuticle and it this that surfactants are designed to penetrate more effectively than herbicide alone..

http://www.thanyagroup.com/research/download/25530111_2.pdf

Or put even more simply. Instead of forming little droplets on the leaves then falling to the ground, the soap or whatever helps the poison to spread out across the surface of the leaf allowing a more even coating and, hopefully, increasing it's effectiveness.

Kathryn
25-07-2012, 06:48 AM
What ratio kamba m are you using kathryn? Its been a struggle to get rid of my clover.

ive been using 60 ml in a 15l backpack. the washing up liquid seem to help with other lawn weeds such as pigface too.
all i seem to be spraying is bindi clover and jo jo bindi at the mo. they are both going crazy, especially in the new houses