Roundup Ready Ryegrass

[Sid]

Most leys are ryegrass apart from Timothy and Clover

Chicory
Plantains
Cocksfoot
Festeoliums

Majority of leys have Ryegrass in the mixture.


So what come back is there on the companies that have cause this issue?

 

[CornishTone]

Annual Ryegrass resistance is a massive issue in some parts of Australia. I’ve seen ryegrass populations in South Australia that were resistant to Glyphosate, SU’s, Fops & Dims and Pendamethalin/Trifluralin all at once! Historic bad practice, primarily in vineyards where I was, has lead to that point but, it’s an annual so fairly straightforward to sort.

Returning it to pasture for a start, it’s not resistant to sheep. Or cutting for hay for a few years also, just got to watch it doesn’t move it’s flowering timing to set seed before it’s cut. It’s successful because it can adapt so well.

A combination of cutting and grazing got large areas under control where growers were willing to adapt. Can’t see Paraquat resistance being any more of an issue, it just highlights that some growers and manufacturers/reps haven’t learnt the lesson.

 

[Jim bean]

paraquat has to be my favourite spray, just the smell of it you knew you you were gonna burn off some crap and it got rid of aphids that caused barley dwarf virus and you could spray it in drizzle with made it work better, wots not to like. why was it banned.

 

[Kidds]

Not here its not

Sorry, I meant here in UK. As I remember it was banned here on the grounds that excessive use had lead to it being detected in water courses.
Simazine went the same way for the same reason and I suspect both cases were not as a result of farming practices in particular. Councils and Railways used them to excess.

 

[Derrick Hughes]

Chicory
Plantains
Cocksfoot
Festeoliums

Majority of leys have Ryegrass in the mixture.


So what come back is there on the companies that have cause this issue?

Why would you worry about spray resistance if you don't use any .
I can see it being a problem on a arable farm though

 

[Kidds]

Which just goes to show that foreign produce is NOT produced to the same standards as UK and European, even in Australia. For a start, Paraquat has been banned in Europe for many decades, certainly in the UK. Secondly we would not use Glyphosate in the way recommended by that Australian leaflet on any significant area.
What do they expect but to get resistance developing from such apparently profligate use?

I don't think the UK is in any position to take any moral high ground as far as the use of glyphosate is concerned.

 

[Cowabunga]

I don't think the UK is in any position to take any moral high ground as far as the use of glyphosate is concerned.

Why not? It is used very sensibly by almost all UK farmers although reliance on it annually for min-till or direct drilling without using the plough periodically is probably playing with fire somewhat and resistant weeds will eventually dominate. We do not have the same issue as Australia though and almost certainly use it more selectively on most farms.

 

[Kidds]

Routinely spraying grain immediately pre harvest is not the right way to do things.
This is my opinion and I am not the only one with this opinion, it is also one of the reasons it is inevitable that it will be banned before very long so farmers are going to have to get used to it.
For the record I don't think paraquat should have been banned, nor chlorpyriphos. Glyphosate shouldn't either but I am against its routine use pre harvest.

 

[cows sh#t me to tears]

And you read one article that most farmers DON'T read, as most take advice from their own agronomist and tar all of Australia with one brush....typical.

 

[Derrick Hughes]

Why not? It is used very sensibly by almost all UK farmers although reliance on it annually for min-till or direct drilling without using the plough periodically is probably playing with fire somewhat and resistant weeds will eventually dominate. We do not have the same issue as Australia though and almost certainly use it more selectively on most farms.

Why would pluoghing a seed under the ground effect anything , far better to destroy it on the surface by cultivation if not spray , do you know how long seeds can remain viable , I can understand if you want to brush the problem under the carpet for the next generation though

 

[Cowabunga]

Why would pluoghing a seed under the ground effect anything , far better to destroy it on the surface by cultivation if not spray , do you know how long seeds can remain viable , I can understand if you want to brush the problem under the carpet for the next generation though

I never mentioned seed. The issue I am referring to is predominantly blackgrass and couch in continuous minimum tilled and direct drilled arable land.

 

[M-J-G]

Most leys are ryegrass apart from Timothy and Clover

We've been including cocksfoot with pretty good success particularly in a dry season.

 

[M-J-G]

And you read one article that most farmers DON'T read, as most take advice from their own agronomist and tar all of Australia with one brush....typical.

But if anything negative in the media about UK produce it would be totally nonsense

 

[Cowabunga]

Routinely spraying grain immediately pre harvest is not the right way to do things.
This is my opinion and I am not the only one with this opinion, it is also one of the reasons it is inevitable that it will be banned before very long so farmers are going to have to get used to it.
For the record I don't think paraquat should have been banned, nor chlorpyriphos. Glyphosate shouldn't either but I am against its routine use pre harvest.

Do some farmer's actually routinely use it pre-harvest? Unless it is needed due to excessive green weed growth, which would require at least 14 days post spraying before harvest, surely most farmers would not spend the time and money to do so.

 

[Derrick Hughes]

I never mentioned seed. The issue I am referring to is predominantly blackgrass and couch in continuous minimum tilled and direct drilled arable land.

Black grass is a seed problem that's how it's spreads , it's an Arable farmers problem or your farm would be covered in Blackgrass the straw you buy , it won't survive long in a grass ley if at all

 

[wanton dwarf]

Seeds don't rot when buried, roundup will have no effect on seed so if you soak a seed in roundup and burry it will will grow just the same if it's ploughed up again In 10 years , just did not want people thinking that ploughing in anyway reduced a seeds ability to grow when it's exposed again

No. Totally incorrect.

 

[Derrick Hughes]

No. Totally incorrect.

Explanation as I don't think I am
I have sprayed grass seed 4 days after sowing so I know from experience that roundup won't effect seed, and I know from my own experiences that seed ploughed under can survive for at least 50 years

 

[wanton dwarf]

Explanation as I don't think I am

Ask an agronomist.

 

[Derrick Hughes]

Ask an agronomist.

I would sooner as a farmer thanks , if he thinks ploughing will rot seed he's an idiot

 

[wanton dwarf]

Explanation as I don't think I am

One thing I'll point out.

Wheat is a much larger seed which has the energy to create shoot through a far larger amount of topsoil to create a leaf.

Black grass has very little energy. So burying the seed will mean no viable blackgrass plants from a deep enough depth. Whilst the soil is wet during winter all vegetation below ground will rot.

I can't remember the figures I was quoted but most of the population of Rye Grass and Black grass is destroyed within 6 to 10 years.

But going back to the original point, you don't want viable plant seeds which have been exposed to chemicals at the surface - because the viable ones are the resistant ones.