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

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Sep 23, 2023 458 likes •615 views

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

SLIDE 1

Cadet

™ Herbicide

Weed control enhancement in Maize

EPA Hearing 27th November 2015

SLIDE 2

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 ™

Application & EPA Evaluation and Review Staff Report.

SLIDE 3

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

SLIDE 4

Cadet ™

SLIDE 5

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec H Silage H Silage H Grain /silage H Grain

H Grain P

P P

Maize growing in New Zealand

Planting and Harvest times

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 ™

SLIDE 6

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

SLIDE 7

Site 1 Gordonton 2011 (Resistant Fathen)

20 40 60 80 100 Atrazine Dicamba Nicosulfuron Mesotrione % BL Weed control with CADET % BL weed control alone

Site 2 Matamata 2011 (Fathen, Pink Shamrock)

20 40 60 80 100 Atrazine Dicamba Nicosulfuron Mesotrione % BL Weed control with CADET % BL weed control alone

Cadet ™

Results in New Zealand

SLIDE 8

Ruakura 2012

Cadet + Atrazine + Actiwett Post

Cadet ™

SLIDE 9

Cadet + Atrazine + Actiwett (Grasses)

Untreated

Cadet ™

SLIDE 10

Cadet + Atrazine Jan 2014 Untreated

Cadet ™

SLIDE 11

Maize Silage Yields

Gordonton 2010 5 10 15 20 25 30 35 Acetochlor + Atrazine pre em Cadet 30mL Atrazine Atrazine + Cadet Dicamba Dicamba + Cadet Mesotrione Mesotrione + Cadet

Maize silage T/ha

Cadet ™

SLIDE 12

Ruakura 2012

5 10 15 20 25 30 35

Cadet + Atrazine Cadet + Dicamba Cadet + Nicosulfuron Pre em only

Yield T/ha

Maize Silage Yields

Cadet ™

SLIDE 13

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