Iha Education October Webinar - Syngenta - Fungicides
This Quiz was created to review the Syngenta webinar presentation on October 15th 2009.
- 1.Temperatures most favorable for Downy Mildew development are:
- A.
35 - 55 F
- B.
50 - 72 F
- C.
65 - 85 F
- D.
None of the above
- 2.Crops that are most prone to Downy mildew include:
- A.
Begonia, Pentas, Lantana, Buddleia, Poinsettia
- B.
Dahlia, Penstemon, Heuchera, Geraniums, Bergenia
- C.
Phlox, Rose, Salvia, Coleus, Buddleia, Alyssum
- D.
Petunia, Marigold, Chrysanthemum, Zinnia, Ageratum
- 3.Symptoms of Downy Mildew infections include:
- A.
Yellow, tan or reddish blotch areas on the topside of the leaves
- B.
Distorted new growth
- C.
Fuzzy mat-like growth on the underside of the leaves
- D.
All of the above
- E.
A & B
- 4.All Downy Mildew fungi are capable of infecting all ornamental crops:
- A.
True
- B.
False
- 5.Both Downy Mildew and Botrytis thrive when the relative humidity is:
- A.
Greater than 85%
- B.
Greater than 95%
- C.
Lower than 75%
- D.
Relative humidity does not affect these fungal pathogens
- 6.A fungicide rotation for prevention of Downy Mildew would include:
- A.
Chipco 26019, Eagle/Hoist, Decree, Cleary’s 3336/OHP6672
- B.
Heritage, Subdue Maxx, Stature SC, Protect DF/Dithane 75DF
- C.
Daconil, Medallion, Subdue Maxx, Terraguard
- D.
Strike, Banner Maxx, Decree, Medallion
- 7.Botrytis spores occur naturally in many growing environments and threaten crops when conditions are:
- A.
Hot and Dry
- B.
Cool and Wet
- C.
Hot and Wet
- D.
Warm and Dry
- 8.Botrytis can infect:
- A.
Roots
- B.
Stems, old leaves and flowers
- C.
Young shoots and emerging leaves
- D.
All of the above
- E.
B & C
- 9.The best way to prevent infections by Botrytis:
- A.
Reduce relative humidity below 85%
- B.
Space plants for good air movement
- C.
Apply appropriate preventive fungicide treatments after pinching or prior to storage or shipping when conditions are conducive for disease development
- D.
All of the above
- 10.A fungicide rotation for prevention of Botrytis will include:
- A.
Stature SC, Kocide, Subdue Maxx, Dithane
- B.
Decree, Medallion, Daconil, Chipco
- C.
Terraguard, Banner Maxx, Eagle, Aliette
- D.
All of the above
- E.
A & C
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