Roberto Busi
@robbert115
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Bob's dad Pasture Weed Scientist @DPIRDbroadacre Adjunct @UWAresearch
Perth, WA
Joined March 2009
Glufosinate 750 g ai (dissolved in 100% water). ——-———— vs ———————. Glufosinate 750 g ai (dissolved in 20% water / 80% UAN). Clear boost in efficacy against ARG. -15DAT-
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Propaquizafop solo (post 300ml) vs propaquizafop + propyzamide (post 300ml+556g) vs Sakura Flow + Brodal (post 210ml + 100ml) vs Ultro (post 1.1kg) against FOP+DIM resistant (mutation 2096) barley grass.
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RT @DMAg_consultant: Rotating the preventative residuals working well to stop rye grass getting resistance to knockdowns and spreading into….
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Next week I'll share some more of similar work trying to show what a residual product (Sakura + DFF was the choice) can add to Glufosinate + Gr. 14 spike use pattern. Any comment / concern let me know.
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Another example of a similar use pattern 3L Glufosinate + 335ml clethodim (+Hasten) followed by 2L Glufosinate. This was the most effective treatment overall (99% efficacy).
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Another clear boost in efficacy was obtained with 2 sequential glufosinate sprays. This reflects what is recommended in LibertyLink canola. Here photo of 2L glufosinate followed by 2L glufosinate (applied 12 days apart).
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Amitrole 3L added to 3L glufosinate slowly slowly did deliver >85% control
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Same results was obtained with 3L Glufosinate + 200ml Voraxor (+Hasten) - NOTE: this happened only with the 200ml rate.
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A clear winner was 3L Glufosinate + 125 ml ValorEze/Terrain Flow (+Hasten) lifting control to 97%
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Using Liberty at the same 3L rate boosted ryegrass control (10-20%). This aspect generated good discussion at the recent Delta field day in Dumbleyung so probably it's worth some more work.
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3L Glufosinate 200 delivered approx. ~50% control / biomass suppression
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How to make glufosinate work against multi-resistant ryegrass? A few photos showing most effective use patterns in a small study done in pots. First photo here to show strong glyphosate resistance at 900g ai/ha. Some glufosinate use patterns did control this ! Check 👇
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Field walk next Tuesday Sept 9 1.30 - 5pm near Warner Glen. We will present our Pasture365 trial (sown mid May 2025). Register at this link below few spots still available - also check some photos of what you may see .
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This will be an interesting one to work on whenever it gets here.
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RT @resistance_test: Dicamba is 🧨 against subclovers. Photos with 3 varieties (Campeda top, Dalkeith middle, Edison bottom) treated with….
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Tigrex 1L - same result with 2L 24DB + 50ml Brodal but much safer in a range of clovers
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