Suntight powers trees to produce fruit.But this necessity also serves as a source of stress and damage, so growers in Washington and other hot, dry growing regions are constantly seeking to perfect the balance ofexposure to maximize quality and color. It's a hard balance to strike."Sunburn is still the largest source of losses across all cultivars in the state. Even with cooling systems and even with nets, it's still the major loss," said Lee Kalcsits, tree fruit physiologist with Washington State University.
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