Pacific Northwest Growers Can Protect Plants from Heat Waves and Still Have a Good Harvest

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<![CDATA[Pacific Northwest heat waves have been challenging growers—and their plants—since June. What do these extreme heat waves mean for hemp crop harvest this fall? Gordon Jones is an assistant professor of general agriculture based at the Southern Oregon Research and Extension Center for Oregon State University.  Jones says well established hemp plants, transplanted in good conditions with proper root growth, can withstand a fair amount of heat stress—as long as they have access to water.  But with extreme heat come other obstacles like reduced access to water, wildfire smoke and declining worker morale. “On some grand level, the smoke, the heat, and the drought are connected, and we could probably have a climate change discussion at the macro scale,” says Jones. These challenges make growing hemp in extreme heat a game of survival. However, there are steps farmers can take early on to prevent heat stress and still have a successful harvest. What is an ‘Extreme Heat Wave’? The World Meteorological Organization states that a heat wave is when the daily maximum temperature exceeds the average maximum temperature by 9 degrees Fahrenheit for more than five consecutive days. From June 24 to June 29, Pacific Northwesterners experienced a 1-in-1,000-year heat event when temperatures peaked at 116 degrees. In extreme heat conditions, hemp leaves droop and fold up in a protective measure. If the stress is not mediated, they will yellow and become crisp. Once a plant is matured, there’s not a lot of changes growers can make, warns Cedar Grey, founder of Siskiyou Sungrown, a CBD wellness product brand in Southern Oregon. For hemp farmers, high temperatures aren’t the only threat to crops and farmers during extreme heat events. "When it gets to that point, your plant is in trouble," he says. "By the time the plant is mature, I…

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Source : Pacific Northwest Growers Can Protect Plants from Heat Waves and Still Have a Good Harvest

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