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Cool, Wet Weather Delays Harvest

Rain fell over the majority of the province, with the largest amounts being reported in the central and northern regions.  Some areas receiving over 30 mm of rain, with snow reported in the northwest region.

While the rain hasn’t been good for those trying to finish the harvest, it is a start in helping to replenish some much-needed moisture.

Across the province, topsoil moisture conditions have improved.  Cropland topsoil moisture is rated as 4% surplus, 40% adequate, 37% short and 19% very short.  Hay land and pasture topsoil moisture is rated as 31% adequate, 38% short and 31% very short. Pasture conditions rated as 14% in good condition, 23% in fair condition, 36% in poor condition and 27% in very poor condition.

For those who are not done, the rain means a loss in quality for the crop and lodging which will make harvest a little more challenging once farmers get back in the field.

According to Saskatchewan Agriculture’s Weekly Crop Report, 62% of the crop is now in the bin with 26% of the crop swathed or ready to straight-cut.

Provincially, 96% of lentils are in the bin, 95% of field peas, 78% of durum, 50% of spring wheat,  44% of canola and 25% of flax has now been combined.

Overall, the harvest is most advanced in the southwest where 86% of the crop is now combined.  The southeast has 84% done, the west-central region is at 57% and the east-central region 55%.  The northeast region has 29% combined while the northwest is at 17% complete.

Source : Discoverestevan

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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.