glyphosate on RR canola,,,how many grams?

[boarderbloke]

How many grams have you been able to put down? Looking at a split application(likely will be 10-14days apart), moisture conditions would likely be regarded good to excellent.
Would like to use 250g for the first and 200 for the second. Have used 400g in the past, 200g plus 200g, have also sprayed 400g in a single shot.(of course old liter is 356g)
How many grams would be reaching the max on DeKalb RR

[BreadWinner]

I would still go with 200grams per application X 2. If only going one I would use 250grams. Its pretty much impossible to hurt, you sure can't see any overlaps or double sprayed spots.

[tweety]

What the heck are u trying to kill at 400 grams?

Guys spray way to much glyphosate on RR canola that is not completely resistant to glyphosate. RR2 is much better. 180 is registered for 2 pass. You may not see the damage, but its there. especially the later you go.

You didn't actually say what crop you are spraying. Corn, canola, soy?

[BreadWinner]

Maybe use tweetys info, seems to know it all. I've even used full liter on the bolting flowering crop in a wet boggy field and it didnt even touch the canola. Works great can't kill that crap. If you touch it you probably have express residue in your sprayer.

[cottonpicken]

It was explained to me that it stops the plant from growing but I wouldn't know it to be true

[boarderbloke]

tweety, canola in the topic line. Going after some foxtail barley in areas that haven't been seeded for the last couple years, but are getting the land back this year. Did get a good burnoff before planting, but the odd one was missed and a few younger ones are coming now, 3-4 leaf stage.

[tweety]

Thanks breadwinner, like i always say, Angryville, its the culture.

https://www.dekalb.ca/_uploads/documents/Agronomic_Information/CanolaArgonomy/GrowingKnowledge_Spotlight_Herbicide_Application_R ates_June2011.pdf

Anywhere from 11 to 35% yield loss.

[tweety]

Topic line, shoot, read the post a few times, but missed it in the topic line. Sorry border.

Its always interesting and yet disturbing to listen to farmers say it doesn't harm the canola.

[freewheat]

You can use a full 360 for a one pass shot, it is right on the label. I do know that volunteer rr canola will not die using 720 in a glyph alone burn off, and still produces seed and lots of it.

You learn a lot when it is too wet to seed!

[tweety]

Half a liter of 540 per acre in single pass. Third of a liter in 2 pass. Up to 6 leaf.

That's on the label.

Of course you can spray 2 liters on it and it will "survive". I understand sometimes we all have to spray later and blast outside rounds and low weedy spots. But you can't say it doesn't hurt yield. That is absolutely incorrect. Its herbicide tolerant when its small only, definitely not resistant.

[boarderbloke]

From the sounds of that link tweety, they're coming out with more resistant varieties in the future. That's for the info, nobody needs spray damage on a good crop.

[vvalk]

rR2 would be out already if it wasn't for China. It's just sitting on a shelf. As for spraying heavy rates on canola tweety is right. There is for sure yields loss. In no way would you see 5 bus yield lost even if you left a test strip. If your spraying even low rates at bolting well you someone who won't even listen to what other people have to say. It would have to be an emergency. As for getting your foxtail try mixing in high rate assure. Works well with glysophate. Saw Bayer was saying 40 acre centurion was registered to control Rosario with liberty

[vvalk]

Foxtail not Rosario or whatever that word is

[freewheat]

Tweety, you are correct on your numbers. I made a clerical error in my thinking.

Vvalk. Rosario! lol! I was like WTH is Rosario? Was getting worried that there was a new weed on the block that everyone knew of but me. lol. Humor keeps me alive. Thanks for the laugh, accident or not.

[tweety]

Glyphosate kills plants by blocking the EPSPS enzyme. Couple ways by which crops can be modified to be glyphosate-tolerant:

One strategy is to incorporate a soil bacterium gene that produces a glyphosate-tolerant form of EPSPS. This way is like RR2 so it blocks the glyphosate from working. That is how they can use higher rates and for longer staging.

Another way is to incorporate a different soil bacterium gene that produces a glyphosate degrading enzyme. This is how canola is today. The glyphosate is metabolized out of the plant, slowly, and definitely takes a lot of energy to do so. The later you spray, the more you use, and the more buds, and more uptake, the harder it is to metabolize. Its been thought buds don't have the ability to metabolize very well, so they really get hit. Hence 6 leaf as top staging.