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Plant & Pest Advisory > Vegetable Crops

Contact Information

The points of contact between Rutgers Cooperative Extension Service and the grower & business communities are the NJ County Agricultural Agents. The agents are a tremendous source of information for both new and experienced growers. Visit your local county extension office.

Wednesday, April 25, 2012

Vegetable Disease of the Week

What's your diagnosis?

Spinach White Rust (and Downy Mildew) Recommendations
Foliage Application:
Prior to symptom development, apply the following on a 7 to 10 day schedule:
Quadris (azoxystrobin, 11) at 12.0 to 15.5 fl oz 2.08SC/A, or 
Cabrio (pyraclostrobin, 11) at 12.0 to 16.0 oz 20EG/A, or 
Reason (fenimadone, 11) at 5.5 to 8.2 fl oz 500SC/A, or 
Tanos (famoxodone + cymoxanil, 11 + 27 ) at 8.0 to 10.0 oz 50W/A. 

Rotate to one of the following fungicides:
Ranman (cyazofamid, 21) at 2.75 fl oz 400F/A, or
Revus (mandipropamid, 40) at 8.0 fl oz 2.08F, or 
Presidio (fluopicolide, 43) at 3.0 to 4.0 fl oz 4SC/A, or 
Actigard (acibenzolar-S-methyl, P) at 0.50 to 0.75 oz 50WG/A, or 
Aliette (fosetyl Al, 33) at 3.0 lb 80WDG/A, or 
Fixed copper (FRAC code M1) at labeled rates (Copper containing fungicides may cause some phytotoxicity), or 
Ridomil Gold Copper (mefenoxam + copper, 4 + M1) at 2.5 lb 65WP/A (on 14-day schedule).

White Rust on underside of spinach.

For more information, see
2012 NJ Commercial Vegetable Production Recommendations.

-Andy Wyenandt