Late blight detected in a Western Manitoba Potato Crop

Manitoba's first case of late blight for the year was found in a western Manitoba field over the weekend.

Manitoba Agriculture plant pathologist Vikram Bisht says they can't speculate on the source of this disease, but notes that in this case, the lesions have already reached sporulation. Bisht says farmers need to be scouting carefully for late blight.

Vikram Bisht:

"Especially in low-lying areas of the fields, or in areas where (plants) are protected by the tree line because the air movement is very slow in that area, so they stay wet for a longer period, and the fungus has a chance to sporulate in those areas and cause infection."

Home gardeners should be on the lookout

Home gardeners should also be on the lookout for the disease, as late blight can affect tomato plants, too.

Vikram Bisht:

"We are already starting to see lots of European corn borer moths. We have set up some pheromone traps, and we are catching lots of moths in them."

"We have started finding some eggs masses on the underside of leaves, and the emergence of larvae is the most critical stage for applying insecticide."

Bisht says there are a fair number of insecticides available for corn borer, adding the critical timing for spraying is two to three days after producers notice the eggs in their field.