Dan Powell
Member
- Location
- Shropshire
My usual strategy here for autumn cereals is no pre-em apart from glyphosate and then pendimethalin (eg Crystal) + DFF at 1 leaf with some manganese and an insecticide if necessary. No black grass here...
Now here is a theory based on observation.
No BYDV in November sown wheat where ploughed. Also no herbicide used on said crop until spring.
Worse BYDV in one area of barley where double dosed with spray due to tractor PTO stopping and me not knowing exactly where it had happened.
Anecdotal evidence of no BYDV from other no till farms (@SilliamWhale , @Clive) where the strategy was pre-em and shut the gate.
So the question is: do leaf applied herbicides stress the crop and therefore make it more susceptible to disease e.g. BYDV and therefore would I be better off doing a pre-em in future?
Now here is a theory based on observation.
No BYDV in November sown wheat where ploughed. Also no herbicide used on said crop until spring.
Worse BYDV in one area of barley where double dosed with spray due to tractor PTO stopping and me not knowing exactly where it had happened.
Anecdotal evidence of no BYDV from other no till farms (@SilliamWhale , @Clive) where the strategy was pre-em and shut the gate.
So the question is: do leaf applied herbicides stress the crop and therefore make it more susceptible to disease e.g. BYDV and therefore would I be better off doing a pre-em in future?