Corteva herbicides - the science behind the products

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1. Which of the following active ingredients is classified as an auxin mimics?

Metsulfuron-methyl
Fluroxypyr
Florasulam

2. Starane Hi Load (Fluroxypyr) works best when applied?

In the autumn
In early spring when cold
In late spring when warm

3. Florasulam works in the plant by

Preventing amino acid biosynthesis
Mimicing natural plant hormones (Auxins)
Inhibiting photosynthesis

4. Which of the following are symptoms of florasulam in the plant (Tick all that apply)?

Purpling of the foliage
Death of growing points
Growth proliferation
Thickened, curved and twisted shoots

5. Which of the following Corteva cereal herbicides contain Arylex active?

Starane XL
Broadway Star
Zypar
Spitfire

6. Which of the following statements is true?

Arylex active works better in cold conditions when compared to other phenoxy herbicides
The phenoxy herbicides work best when cold
Arylex active is a sulfonul-urea herbicide

7. Which of the following grassweed species are not controlled by Pyroxsulam (Broadway Star)?

Annual meadow grass
Ryegrass
Wild Oats
Brome species

8. Which of the following statements about Broadway Star are not true

Broadway Star is a phenoxy herbicide
Broadway Star controls umbelliferous weeds
Broadway Star controls Brome species
Broadway Star works best when weeds are small and actively growing

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