GFM Network News






Late blight can cause rapid crop losses in potato and tomato crops, says provincial commercial horticulture specialist Rob Spencer.

Potato and tomato growers warned to keep watch for late blight

Monitor for symptoms in tomato transplants and in early-emerging potato plants

There has been a great deal of concern in Alberta in the last few years about late blight, a serious disease that mainly affects potatoes and tomatoes. Favourable conditions for disease development have resulted in multiple outbreaks of late blight in commercial market gardens, as well as urban potato and tomato crops throughout parts of […] Read more


In 2015, late blight continues to be a risk for all potato/tomato family crops grown in Alberta.

Late blight risk on potatoes and tomatoes again this year

The disease can be carried over in infected material

Over the last few growing seasons, growers have seen signs of late blight, a serious disease that mainly affects potatoes and tomatoes. This disease is caused by an aggressive fungus that develops rapidly under wet/moist environmental conditions. Wet conditions, combined with the presence of the pathogen, has resulted in continuing outbreaks of late blight in […] Read more

Late blight confirmed in Alberta

Specific steps needed to prevent carryover of disease to future crops

Late blight is one of the most serious diseases of potatoes and tomatoes worldwide, resulting in significant yield and quality losses annually. In general, in Alberta, late blight occurs infrequently, but can have devastating impacts in the years when it reaches epidemic levels. “In the summer of 2013, late blight was confirmed in parts of […] Read more