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Irrigation Strategies to Avoid Heat Damage to Cool Season Vegetables

Currently, we are experiencing a prolonged heatwave on the central coast.  Heatwaves have become a recurring phenomenon in recent years, especially in late summer. With thousands of acres of cool season vegetables in the ground, irrigation will be critical for keeping crops cool and for supplying enough moisture to meet their water needs. Crops can be kept cool by maximizing evapotranspiration (ET).  …

Western Growers Launches Leafy Green Food Safety Website

Answering the nation’s call for enhanced food safety measures, Western Growers (WG) has developed a website to facilitate changes to the Leafy Greens Marketing Agreement (LGMA)-approved Leafy Green Food Safety Guidelines: www.leafygreenguidance.com. The interactive website now easily allows the public to participate in routine discussions and process amendments that will ensure continuous improvement of the leafy green food safety preventive …

CA Leafy Greens Marketing Agreement New Membership Sign Up Due April 1

The California Leafy Greens Marketing Agreement (LGMA) is currently accepting sign-up forms from new signatories for the2020/21 fiscal year. Since 2007, handlers of California lettuce, spinach and other leafy greens have protected public health by establishing a culture of food safety on the farm through the California Leafy Greens Marketing Agreement. Buyers of leafy green products look for LGMA certification …

Weed Control in Lettuce

Weed control in lettuce and other crops is a key issue this time of year. Purslane is particularly problematic and is adapted to warm conditions and can grow very rapidly especially during July and August. At times growers and PCA’s are disappointed with the efficacy of Kerb on this weed. Kerb is effective in controlling purslane but it is readily …

Do Ladybugs Help Your Garden Grow? Depends On Surroundings

When cabbage looper moth larvae infest a field, sustainable growers will often try to control the pests by releasing large numbers of predators, such as ladybugs. That way they can avoid spraying expensive and environmentally harmful insecticides. Still, farmers have mixed results when they supplement their fields with beetles or other predators. A new study of cabbage crops in New …

The Recent Romaine Recall and the LGMA

Although the Center for Disease Control announced on January 9, 2019 that the recent e-coli outbreak is over, there is another part of the story that doesn’t seem to be getting allot of traction. During the investigation the FDA made the comment that based on the spread of the traceback it’s highly unlikely that it originated from a single farm. …

Got “Red” Aphids?

Red Aphids

Since last week, I have been receiving samples with “red” aphids to get the identification. It turned out that this time, most of these ‘reddish’ aphids were identified as the lettuce aphid, Nasonovia ribis-nigri (Fig. 1). To me, they look more red-orange; however, their distinct black marks on the abdomen and short cauda (finger-like, short appendage at the end of …

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