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Travis Monk, 2008-2014
 
April 19, 2013 | Travis Monk, 2008-2014

Wind Machine on a Frosty April Morning

This week has been one of those weeks that I ask myself “why the heck didn’t I become a banker instead of a farmer?” This question usually runs through my head a few times a year between late February and early April as I am out in the vineyard running frost protection. Typically here in the Arroyo Grande and Edna Valleys, the coldest time of year for us is during the winter when the vines are dormant, but it seems like there is always a cold spell sometime in mid April when Mother Nature decides she wants to show us who is really in control. 

As the vines begin to bud in early March, we begin to worry about frost. As temperatures drop into the low 30’s, this year’s delicate new growth can be severely stunted by only a couple hours of below freezing temperatures. Fortunately, we’ve got a few tools in the bag to help battle these cold temperatures. Utilizing some pretty cool technology, our vineyards are all hooked up to weather monitoring stations that send me and my frost supervisor a text message any time the temperature drops below 35 degrees F.  From then, it’s a mad dash to hop in the truck and get to the ranch. Typically at this point I’m still about half asleep!

The first step is to turn on the wind machines like you’ll see in Brian’s video below. The wind machines keep the air circulating, (warm air from above, mixed with the cool air on the vineyard floor) preventing the formation of frost. The echoes of the wind machines can be heard from miles away on a really cold and clear night. In some of our vineyards we do not have wind machines, but fortunately we do have plenty of water. In these vineyards we depend on overhead irrigation to keep the vines protected. As water turns to ice, heat is given off and this typically will keep the vines from being damaged. It’s a pretty scary thing when the first light breaks through and you begin to see a thick layer of ice coated around the vines, but amazingly it works.

After these frosty nights, it only takes a few days of warm weather in the vineyard and a few nights of sleep to remind me that I chose the right job. Spring time in our vineyards is pretty hard to beat…as long as there is no frost!

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