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West Coast heat wave affecting lettuce, vegetable quality

markon lettuce burn 7-9-24
Excessive heat is causing damage such as tip burn in this lettuce, romaine, and leaf lettuce. (Courtesy Markon)

Markon Cooperative BB #:123315 released this From The Fields report July 9, 2024:

Much of the West Coast, including California’s Salinas and Santa Maria Valleys, have been experiencing an extended heat spike over the past week with temperatures ranging from the 70°s to 80°s near the coast to as high as 110° in the southern end of the Salinas Valley.

All row crop vegetables that have been exposed to these temperatures are expected to exhibit varying levels of heat-related quality and shelf-life concerns over the next two weeks.

In general, most commodity and value-added supplies have faired better than expected thus far, but some lettuce and tender leaf crops are showing defects such as:

• Dehydration
• Increased insect pressure
• Internal burn/tip burn
• Reduced shelf-life potential
• Weakened texture
• Yellowing leaves

Markon inspectors are aggressively monitoring quality through pre-harvest inspections and finished product evaluations of commodity and value-added items. Fields that are exhibiting elevated issues are being rejected and harvesting/processing crews are taking steps to remove damaged leaves and minimize defects.

Ordering for quick turns is recommended. It remains critical to adhere to strict cold chain management throughout distribution to the end-user level in order to maximize quality and shelf-life of perishable produce items.

Please contact your Markon customer service representative for more information.

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