can anyone come up with a reason why 3 litres of glypho would kill all the grass weeds/broadleave in a field but not touch the volunteer cereal ? not sure how much water was used as this is 2 fields that we contract drill for a customer n they sprayed it off trying to think of a reason.
baffled
- Thread starter juke
- Start date
- Location
- Cirencester
Round Up ready cereals have arrived, best grow it on and use the seed!!!!
that was the first thought for all the unfortunate folks that have blackgrass
i sprayed 3litres of glypho with flat fans 200litres/ ha in still conditions at 10k and it knocked the volunteers but they got over it
not happy as I have just had to spray them out again in the rape crop, putting it down to the fact they have taken an adjuvant out of it! Always something
not happy as I have just had to spray them out again in the rape crop, putting it down to the fact they have taken an adjuvant out of it! Always something
it was sprayed of two weeks ago tomorrow , no haven't got any pictures these are really strong volunteers so I don't think they have come up post spraying... its getting drilled with beans this week anyway, we suggested they get there agronomist in to look but I didn't have much faith in him coming up with an answer..
You may go again? If not your looking a falcon in crop
still a lovely dark green unfortunately …
Spencer
Member
- Location
- North West
What product? Generic or branded?
Is there any dead cereals?
Only reason I can think is they were shaded out by other weeds.
I'm gonna guess generic ,
Not that I could see , there agronomist is going to look this week
Pics would be helpful.
Two weeks isn't enough to have really dead plants of any description.
Could it be longer? Then you could easily have another flush of volunteers.
- Location
- S E Glos
If the volunteers are growing more vigorously than other weeds it may be the stem extension issue, i.e. the plant is growing so quickly all the sap and nutrient movement is upwards, and you won't get total kill until there is downward movement to carry the glyphosate into the roots. That said you should still see symptoms of herbicide damage on the foliage even if the plants don't die.
Boydvalley
Member
- Location
- Bath
Applied some shogun for volunteer barley in stubble turnips. Showed no signs of working for two weeks then it rained and there was some response. Only now 4 wks later do they look like I killed them. Funny old year.