Botrytis fungicide resistance is a serious problem in petunias that results in millions of dollars in crop losses each year. A simple calcium solution may be the key to managing this problem more effectively.
In a December 16 letter to its customers, Dümmen Orange said it had encountered an issue in its El Salvador-based Las Mercedes production facility, where bacterial leaf spot had been confirmed in begonia production.
Certis USA recently introduced Carb-O-Nator, a new broad-spectrum foliar fungicide that works on contact to control powdery mildew, Alternaria, Anthracnose, Botrytis, Septoria leaf spot, and other diseases.
Halfway through a five-year, $4.6 million grant to combat rose rosette disease in the U.S., a national research team is encouraged by the amount of information learned, but admits having a way to go before finding how to overcome the deadly problem.