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CFIA completes soil testing for potato wart in PEI

The Canadian Potato Council (CPC) is pleased that the Canadian Food Inspection Agency (CFIA) has completed its investigation in Prince Edward Island. Since fall 2021, almost 50,000 soil samples have been collected on the Island as part of CFIA’s investigation to manage potato wart.

“I would like to thank CFIA for its ongoing efforts to efficiently collect and process the high volume of soil samples over the past 20 months,” said CPC’s chair Bill Zylmans. The thorough investigation unearthed only four finds of potato wart spores in fields that are associated with the same operation and in land that is part of the Potato Wart Long-Term Management Plan. That is 0.008% incidence.  Investigation results indicate limited incidence in fields growing potatoes destined for the on-island processing market. The recent detections are within a distance of 12 km of each other and continue to be monitored and regulated under CFIA’s Potato Wart Long-Term Management Plan.

“We look forward to working with the federal government to review the long-term management plan this fall as part of our commitment to guide our decisions based on data, science, international standards and best practices,” added Zylmans.

Source : The Grower

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Wheat Yields in USA and China Threatened by Heat Waves Breaking Enzymes

Video: Wheat Yields in USA and China Threatened by Heat Waves Breaking Enzymes

A new peer reviewed study looks at the generally unrecognized risk of heat waves surpassing the threshold for enzyme damage in wheat.

Most studies that look at crop failure in the main food growing regions (breadbaskets of the planet) look at temperatures and droughts in the historical records to assess present day risk. Since the climate system has changed, these historical based risk analysis studies underestimate the present-day risks.

What this new research study does is generate an ensemble of plausible scenarios for the present climate in terms of temperatures and precipitation, and looks at how many of these plausible scenarios exceed the enzyme-breaking temperature of 32.8 C for wheat, and exceed the high stress yield reducing temperature of 27.8 C for wheat. Also, the study considers the possibility of a compounded failure with heat waves in both regions simultaneously, this greatly reducing global wheat supply and causing severe shortages.

Results show that the likelihood (risk) of wheat crop failure with a one-in-hundred likelihood in 1981 has in today’s climate become increased by 16x in the USA winter wheat crop (to one-in-six) and by 6x in northeast China (to one-in-sixteen).

The risks determined in this new paper are much greater than that obtained in previous work that determines risk by analyzing historical climate patterns.

Clearly, since the climate system is rapidly changing, we cannot assume stationarity and calculate risk probabilities like we did traditionally before.

We are essentially on a new planet, with a new climate regime, and have to understand that everything is different now.