7-28 FB Late Blight in Potatoes

 Late Blight can be devastating to your potato crop but fortunately there’s a fix.

Late blight can destroy a potato field very quickly. The first symptoms of late blight in the field are small, light to dark green, circular to irregular-shaped water-soaked spots. These lesions usually appear first on the lower leaves. The fungus thrives most in cool, damp weather. Under moist conditions, a white ‘downy mildew’ can be seen on the leaf. Late blight infection of tubers is characterized by irregularly shaped, slightly depressed areas of brown to purplish color of variable size on the skin. The disease cycle can be halted in a dry spell, but will continue where it left off when damp weather returns. Late blight can eliminate an entire field from harvest if the disease is left untreated.

Here’s David Laird, Brand Manager for Revus Top by Syngenta: “It’s been on the market for 3 years with good performance. It’s new chemistry for late blight and the other diseases. Late blight is a different disease and caused by byphofer infestians and they’re totally different.