Cadet Weed control enhancement in Maize EPA Hearing 27 th November - PowerPoint PPT Presentation

™ Herbicide Cadet Weed control enhancement in Maize EPA Hearing 27 th November 2015

Cadet ™ Application & EPA Evaluation and Review Staff Report. 1. The Application and Staff Report show that Cadet can be used effectively. 2. The scientific uncertainty is not unreasonable. 3. The uncertainty is managed with a robust risk assessment methodology. 4. The controls proposed allow for the uncertainties and are conservative. 5. There are no classification types or controls that growers are not used to managing. 6. Propose one change to a control wording Max frequency of applications One Application per crop cycle.

Cadet ™ 1) EC formulation containing active ingredient 100g / litre Fluthiacet- methyl 2) Fluthiacet- methyl first reported 1993 3) Initially Registered in US April 1999 by Kumiai / Japan 4) FMC acquired the rights 2008 5) Currently registered in US, Japan, & China ; submitted in New Zealand and South Korea

Cadet ™

Cadet ™ Maize growing in New Zealand Planting and Harvest times Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec H H H H H P P P P Silage Silage Grain /silage Grain Grain Planting is once per calendar year, Harvest is once per calendar year Herbicides applied pre and post emergence of weeds and crop. Cost of weeds = 56% reduction silage yields 61% reduction grain yields FAR issue 11(compared to pre emerge herbicide)

Cadet ™ Proposed Use in Maize in New Zealand 1) Low dose rate 30mL/ha- 3gai/ha 2) Used as a partner with standard herbicides 3) Delivers - Faster, more effective knockdown - Controls herbicide resistant weeds - Broadens the spectrum of weed control

Cadet ™ Results in New Zealand Site 1 Gordonton 2011 (Resistant Fathen ) Mesotrione % BL Weed control with Nicosulfuron CADET Dicamba % BL weed control alone Atrazine 0 20 40 60 80 100 Site 2 Matamata 2011 (Fathen, Pink Shamrock) Mesotrione % BL Weed control with Nicosulfuron CADET Dicamba % BL weed control alone Atrazine 0 20 40 60 80 100

Cadet ™ Cadet + Atrazine + Actiwett Post Ruakura 2012

Cadet ™ Untreated Cadet + Atrazine + Actiwett (Grasses)

Cadet ™ Untreated Cadet + Atrazine Jan 2014

Cadet ™ Maize Silage Yields Gordonton 2010 Maize silage T/ha Mesotrione + Cadet Mesotrione Dicamba + Cadet Dicamba Atrazine + Cadet Atrazine Cadet 30mL Acetochlor + Atrazine pre em 0 5 10 15 20 25 30 35

Cadet ™ Maize Silage Yields Ruakura 2012 Yield T/ha 35 30 25 20 15 10 5 0 Cadet + Atrazine Cadet + Dicamba Cadet + Pre em only Nicosulfuron

Cadet ™ Benefits of the use of CADET 1) Improved weed control 2) Weed control over a wide range of soil types- peat soils 3) Post-emergence - freedom in designing weed management 4) Potential for reduced herbicide use, less environmental impact and more sustainable practices. 5) Herbicide resistant weed management 6) Yield improvement 7) Financial benefit to the farm operation 8) Increase feed and grain for humans and livestock