Peter,

There is nothing selective for brome applied post em in barley or oats so you have to target pre em in those crops ....and utilise as much glyphosate pre sowing as you can and already do.

Use Flufenacet/Pendimethalin mixtures in barley but do observe label sowing depths, Avadex can also be used. In oats Uranus can be used pre-em as a SOLA but brome is likely to romp through that.

For weeds to be quoted on label products must demonstrate reliable control >85%. Following crops can often be damaged or stunted ...even at 20% damage a grower would not be happy so warnings are stated on label but that should not be interpreted as a good level of efficacy.

Dick

If you go with Crystal as a pre-em and follow with IPU early post-em, you can get good control but you have to watch crop safety. The risk is that if the soil’s too warm you can get too much uptake of IPU and could risk a bit of crop damage.

There is no brome control in oats so you must make sure it’s germinated before drilling and again after the oats have been harvested, and if necessary delay drilling, or consider a return to the plough if it’s very dry (i.e. no chitting).