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April 14, 2022

Salinas Valley is experiencing an early wave of Impatience Necrotic Spot Virus (INSV) that is affecting green leaf, iceberg, and romaine crops, causing some yield losses. Plant scientists have attributed this early INSV to Salinas Valley’s dry winter season combined with higher-than-normal temperatures. Farmers need freezing temperatures to reduce insect populations. Without this natural kill step this past winter, a higher percentage of the thrip population has survived. Not all fields are impacted, but Markon inspectors have observed yield losses up to 30% in some fields scheduled to harvest in the next two to three weeks.

The attached pictures illustrate the type of defect being observed and the impact on volume.

Growers anticipate a decline of INSV activity with cooler weather and rain in forecast later this week and next week.

Harvesting crews can detect INSV and cull from commodity packs. Markon inspectors will continue to work closely with suppliers and provide the best available quality.

Please contact your Markon customer service representative for more information.

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