Andy Wyenandt

Recognize these diseases of Spinach and Strawberry?

White rust on bottom side of infected spinach leaf.
Anthracnose fruit rot of strawberry.	Botrytis fruit rot of strawberry.

With the relatively dry spring we’ve had thus far, it’s easy to forget about Pythium and Phytophthora! The same question always comes up about this time of year when growers begin to start thinking about transplanting their tomato and pepper crops. “What should I do to help prevent Pythium and Phytophthora?”

In years past, the answer was simple, apply mefenoxam (Ridomil Gold SL, Ultra Flourish, 4) or metalaxyl (MetaStar, 4). Problem solved, right? In the past, that answer was right, but with resistance development in Phytophthora (P. capsici) to both mefenoxam and metalaxyl, the correct answer isn’t so simple anymore. [Read more…]

• Asparagus: Phytophthora crown and spear rot
• Cabbage: Damping-off
• Cole crops: Downy Mildew and Alternaria
• Leeks (overwintered, spring transplanted): Purple blotch
• Lettuce: Bottom Rot/Drop
• Parsley: Septoria Blight/Bacterial (blight) leaf spot
• Strawberry: Anthracnose fruit rot; Botrytis (Gray Mold) and Blossom blight

[Read more…]

All seed used in transplant production, as well as, any transplants brought into the greenhouse should be certified ‘clean’ or disease-free. Important diseases such as Bacterial leaf spot of tomato and pepper can cause major problems in transplant production if introduced in the greenhouse. [Read more…]

Valent has removed the Presidio® Fungicide Supplemental Label containing Brassica (Cole) Leafy Vegetables, Root and Tuber Vegetables, Carrot, Potato, and a 30-day rotation interval for Wheat. [Read more…]