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Citrus growers work late to fight freeze

Copyright 2014 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. The Associated Press

Cold weather threat to California crops.

Saturday, December 7, 2013 - 10:17 am

SANTA ANA, Calif. — After the orange harvesting and the sun sets, the toughest part of John S. Gless' day is just beginning: a desperate fight to stave off a cold spell threatening to destroy his citrus crop.

The vice president and manager of Gless Ranch, which grows oranges, lemons and grapefruit on 5,000 acres 100 miles north of Los Angeles, spends his nights shuttling from field to field where costly wind machines are warming up the groves by a few critical degrees that can make all the difference once temperatures dip dangerously low.

“You get frost calls, and you go out and kind of control to make sure it doesn't do any damage — and then you get a full-blown freeze where you're fighting to save crops,” Gless said Thursday. “Last night, we beat it.”

Growers across California have been trying to protect the state's prized $2 billion-a-year citrus industry and other key crops like lettuce and avocados from the cold snap that engulfed the state this week, dropping temperatures to levels that can damage fruit and delay the harvest of greens.

So far, no major citrus damage has been reported, but some is likely in especially cold pockets in the Central Valley. Any losses most likely won't be known for several weeks, said Bob Blakely, director of industry relations for California Citrus Mutual, an association of growers.

Citrus farmers are no stranger to cold and use irrigation and wind machines to propel warm air through the fields and raise the temperature those critical degrees after nightfall. Farmers are on the lookout once temperatures drop to 28 degrees and anything in the low 20s is critical, Blakely said.

Temperatures fell to near record lows early Thursday in Fresno were expected to remain in the upper 20s at least one more day, said Paul Iniguez, a meteorologist at the National Weather Service. The weather was to start warming today before the cold spell resumes Sunday and Monday, he said.

“It's very early in December to have a prolonged cold period like this,” he said, adding that temperatures in the San Joaquin Valley have run 10 to 15 degrees below normal.

Already citrus farmers spent $6.7 million over the first two nights of the freeze to try to warm up the fields, the growers' association said. Of key concern is the mandarin crop, because the tiny fruit is thinner-skinned than other oranges, making it more susceptible to cold.

Avocado growers in California are also bracing for icy temperatures that threaten to freeze the quarter-of-an-inch stems that dangle fruit from the tree and drop avocados to the ground.

Farmers are planning to increase irrigation and use wind machines if necessary on the state's 55,000 acres planted with avocados, but it's early in the growing season so any dropped fruit “would be a total loss at this point and time,” said Tim Spann, research project manager at the California Avocado Commission.

Jack Vessey, who farms 10,000 acres of lettuce, spinach and other vegetables in Imperial County, said he's watering more, and later in the day to try to keep crops moist through the night. His main concern, he said, is that he can't harvest greens until they thaw out in the morning.

“We only have so much time in a day to cut things,” he said.

“I am more concerned with making my orders and trying to get the crops out of the field.”

California is the country's biggest supplier of fresh-market oranges, and its 285,000-acre citrus industry is second only to Florida, according to Citrus Mutual.

Gless, who also farms 2,000 acres in Riverside County, said he hasn't seen temperatures drop to critical levels in his Southern California fields but will also be keeping a watch.

In Riverside, temperatures hit 31 degrees early Thursday, which is 11 degrees below normal, said Ryan Kittell, a meteorologist with the National Weather Service.

The state's farmers are about eight weeks into the season, but 85 percent of the navel orange harvest lies ahead, said Blakely. And while these cold spells threaten the crop, the mild days and chilly nights are also what make California's oranges so vibrant and tasty, he said.

“We need the cold air to color up the fruit and bring up the flavor,” Blakely said. “It's our greatest blessing, but if it gets too cold, it can be a curse.”