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Timely Rains Benefit Manitoba Potato Crop

Manitoba's potato crop is in good condition heading into August.
 
Vikram Bisht with Manitoba Agriculture says timely rains have benefited the crop, however there are some farmers who have had to irrigate. Most of the crop is at the bulking stage.
 
He talked about one concern that farmers are dealing with.
 
"In some places we have heat runner issues, which basically means that when temperatures are over 28 or 29 degrees Celsius, the potatoes are stressed and they then start producing sprouts from the already formed tubers, or they will form chains."
 
Bisht says there have been no signs of late blight. He adds instances of European corn borer have been very low and the aphid population on seed potatoes is also very low.
 
Potato acres are higher than last year, according to Bisht, who says that processors were comfortable in their market assessment which led to an increase in acres.
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LALEXPERT: Sclerotinia cycle and prophylactic methods

Video: LALEXPERT: Sclerotinia cycle and prophylactic methods

White rot, also known as sclerotinia, is a common agricultural fungal disease caused by various virulent species of Sclerotinia. It initially affects the root system (mycelium) before spreading to the aerial parts through the dissemination of spores.

Sclerotinia is undoubtedly a disease of major economic importance, and very damaging in the event of a heavy attack.

All these attacks come from the primary inoculum stored in the soil: sclerotia. These forms of resistance can survive in the soil for over 10 years, maintaining constant contamination of susceptible host crops, causing symptoms on the crop and replenishing the soil inoculum with new sclerotia.