Roberto Busi

If you need to test in what silo your Tomahawk seed has been stored we can help with rapid turnaround times. Here seed sprayed PRE with Sentry will emerge and show symptoms in 7-10 days.

The variability within the trays of each treatment appears related to the level of glyphosate resistance in ARG studied (and the + correlated difficulty of killing ARG with glufosinate).

I will speak about all things glufosinate next week at Perth GRU (17 Feb), Lake King regional Updates (25 Feb), then MIG pre-sowing trial review (4 Mar), then Kalannie Updates (10 Mar). Here glufosinate interaction with increasing level of AMS.

@BradW00ldridge I found Kik and orher C4 perennial grasses are highly tolerant to atrazine, simazine and metribuzin. Would that have been an option instead of glyph?

After much reading and consultation, we thought 1L powermax in June would be safe on kike. Nope, smoked it 100%, missed spot on right

@4FarmersBill @Tedthekelpie Assuming the reduction in yield is real: does it come from greater weed germination or greater crop effect of the pre herbicide or both and is there any rule of thumb on fine tuning / settle over a certain soil wetter rate?

@Tedthekelpie Yes Sam, but was the drop significant statistically? No, I don’t believe so. The earlier work I did with wetter on shallow duplex soil (no humectant) saw increasing yield to 50 L/ha. What we can be confident is that most of the benefit comes from the low rates.

Huge wheat response to 2 L/ha of #Aquifer. For such a small cost it makes me think this product should go over most crops in sandy WA soils, the humectant component is very valuable too.

@Pedro67826293 Carbetamide

@robbert115 What is Ultro ?

Something to test again this coming winter. Response of phenotype resistant wild radish against 2,4-DB and a pre-em applied EPE at full rate. From left UTC, 3.5L 2,4-DB solo 2,4-DB + Overwatch 2,4-DB + Propyzamide 2,4-DB + Ultro Last one killed radish 100%.

Today it was a great Pasture 365 field day at Manji! Thanks to all those attending, DPIRD Manji crew and Jeisane for organizing it all!

@rogstates 1080 vs 420. small weeds 2 leaf. There is quite a bit of evidence of this correlation chatgpt.com/s/t_695e1e3756…

@robbert115 What rate did you use and weed size Roberto?

Glyphosate resistance well correlates with greater survival to glufosinate (ie poorer control). Here an example of 3ARG populations with nil, mid and high resistance to glyphosate vs the same sprayed with glufosinate. Work to do to understand why but it is very clear & neat.

Next generation systemic PPO herbicide (fendioxypyracil) developed by BASF. It does have grass activity and it should be really good against ARG. biorxiv.org/content/10.648…

@AaronHutcho Need to do more work to exactly understand how to bypass low activity of glufosinate - I’ve done work on adjuvants, mixing partners and patterns - much known already. This + correlation between glyph and glufo survival in ARG should be studied at biochemical depth.

@robbert115 Could it be a barrier for translocation due to both being salt based carriers. Very interesting Roberto but disappointing also. Makes you wonder with sometimes lower water rates and high concentrated drops of gly particularly in winter with high humidity work better, salt trans.

I'll be speaking about glufosinate and how to use it to maximise its efficacy at GRDC Updates in: - Perth (17 Feb) - Lake King (25 Feb) - Kalannie (10 March). See you all then. [ In the mean time have a lovely Xmas ] Photo: glyph left vs glufo right

Field day at Manjimup on Thursday 8th January to see what is growing on Pasture 365 plots 18 months after sowing (3pm - 5.30pm with sundowner/BBQ). Register here for free: trybooking.com/DIHSW You have a table below with all 10 treatments tested and compared.

@BarryGr66 No, I would not stretch it that far as cletho + factor is a beauty in itself. This small study showed additive interaction between a dim (Factor - butroxydim, not great on brome on its own) and a pre-em. ATM probably only propyzamide can be used post-em with Edge Unify.

@robbert115 would you say ultro/factor EPE is better value than ultro pre seeding and cleth / factor post emergent ?

Interaction of 100g Factor (25g ai) with Ultro, Propyzamide or Overwarch applied EPE against barley grass, brome grass or rye grass. First two photos to set the stage: Left untreated vs Right Factor 100g fully killed barley grass.

Final slide for extra context: 1L crucial (left) does kill barley and brome grass (ARG is glyph resistant) and 3L glufosinate delivers some mild suppression.

Overwatch 1.25L (solo on the left) suppression of ARG vs tank mix where the barley grass gets killed by Factor. Brome can’t be controlled by tank mix (as both actives are weak against brome).