Why are you asking about this on a UK gardening forum? Those are herbicides for professional use. Kerb is used in oil seed rape farming. Katana may even be forbidden here. We are gardeners and most of us care about wildlife and don't use herbicides unless really necessary eg on driveways.
Dordogne and Norfolk. Clay in Dordogne, sandy in Norfolk.
Use as-it-comes malt vinegar instead. No dilution necessary. Safe too; I put it on my chips. But it comes with a warning: don't spray from a plane over a whole forest.
location: Surrey Hills, England, ex-woodland acidic sand. "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
@dm2244 There is always a game of catch up when chemicals are used in garden and agricultural settings. Years after use the devastating realisation of what has happened as a result becomes all to apparent. One such chemical used on fields here was Benlate, it was used for years to control couch, it withdrawn when a direct link was found to babies with birth defects. The fact that you need to ask this question shows you have no idea what you are doing or indeed it's consequences. Is gardening very competitive in Texas the biggest and the best maybe? Throw chemicals at it for instant success and to hell with anything that gets in the way, that is not gardening. Damage the natural environment and you are on a rollercoaster of more chemicals. Time to 'wake up and smell the coffee'. Gardening has moved on.
I have worked as a Gardener for 24 years. My latest garden is a new build garden on heavy clay.
I'm from Bolton but live in Texas now, I didnt realize it was a UK forum. I take the point about chemicals and I tried for 1 year to use manual methods to control Crab Grass but here in Texas its so hot that weeds are a major problem, I pulled at least 2000 weeds last summer, grass needs cutting 2x per week in summer . I thought I had solved the Crab Grass problem and we will see in a few weeks but then I find Poa annua almost taking over my lawn in early spring. I did seek advice from the University of Tennessee Agriculture department on Poa Annua. They said if 1 herbicide independently needs 2oz per gallon and the 2nd needs 3 oz per gallon then their recommended combination needs 2 x 2oz & 2 x 3oz into two gallons. I find this hard to accept, surely if you mix them separately into 1 gallon each then combine the two you get 1x 2oz & 1 x 3oz into two gallons water. These products are strictly controlled in the USA and I'm only using recommended methods but the difference in the USA is individuals have rights, there is individual responsibility, not the nanny state only allowing certain people to use these chemicals. This is why I left UK 30 years ago. My question is a valiud chemistry question. I will use the USA forum. Thanks
2 x 2oz + 2 x 3oz in two gallons of water would give you the same strength solution as 1 x 2oz + 1 x 3oz in one gallon of water, but twice as much of it.
Doncaster, South Yorkshire. Soil type: sandy, well-drained
Individuals have rights in the UK too. The US sadly isn't generally known for environmental care tho there are always exceptions. You can only try and learn and do your best. The advice to contact the manufacturers holds good wherever you are - if you trust them, go ahead - if you are doubtful, ask around on a US forum. There was a chap from Texas ( james ? ) who used to post on here If you use the Search facility, you could perhaps find his threads.
I don't think the OP has grasped that it's never a good idea to mix herbicides or pesticides.
The other thing to do is gow ith the flow. If lawn grass won't grow without masses of chemicals and water, grow a different grass or plant. It can still be useful, just not conventional lawn.
Vendée - 20kms from Atlantic coast.
"The price good men (and women) pay for indifference to public affairs is to be ruled by evil men (and women)."
Posts
https://www.gardening-forums.com/
They seem to like loads of chemical solutions for everything
I live in west central Scotland - not where that photo is...
"Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
The fact that you need to ask this question shows you have no idea what you are doing or indeed it's consequences. Is gardening very competitive in Texas the biggest and the best maybe? Throw chemicals at it for instant success and to hell with anything that gets in the way, that is not gardening.
Damage the natural environment and you are on a rollercoaster of more chemicals. Time to 'wake up and smell the coffee'. Gardening has moved on.
The advice to contact the manufacturers holds good wherever you are - if you trust them, go ahead - if you are doubtful, ask around on a US forum.
There was a chap from Texas ( james ? ) who used to post on here If you use the Search facility, you could perhaps find his threads.
The other thing to do is gow ith the flow. If lawn grass won't grow without masses of chemicals and water, grow a different grass or plant. It can still be useful, just not conventional lawn.