Experts say hop yields and quality will continue to drop by 2050 if farmers don’t adapt to higher temperatures
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    2•9 months ago

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    Beer, the third-most popular drink in the world after water and tea, is made by fermenting malted grains like barley with yeast.

    The researchers compared the average annual yield of aroma hops during the periods 1971-1994 and 1995-2018 and found “a significant production decrease” of 0.13-0.27 tons per hectare.

    World leaders have promised to try to stop the planet heating by more than 1.5C above preindustrial levels by the end of the century, but are pumping out too much greenhouse gas to meet that target.

    As temperatures rise and rainfall dwindles, some hop farmers have moved gardens higher, put them in valleys with more water and changed the spacing of crop rows.

    Trnka said: “Growers of hops will have to go the extra mile to make sure they will get the same quality as today, which probably will mean a need for greater investment just to keep the current level of the product.”

    High energy costs, driven by the soaring price of fossil gas since Russia’s invasion of Ukraine, have played a bigger role for brewers.

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