Leafy Greens

Impatients Necrotic Spot Virus on desert lettuce topic of hybrid workshop

Impatients Necrotic Spot Virus was detected in spring 2021 on lettuce in the Western desert of the U.S. Although the disease did not have a significant impact in most fields, the impact of Impatients Necrotic... more »

Leafy greens: A positive pathogen test can be a positive thing

Last month the U.S. Food and Drug Administration issued a report on findings of a sampling assignment that tested raw agricultural commodity romaine lettuce at facilities and on farms in the Salinas, Calif., and Yuma, Ariz., growing... more »

Square Roots opens Grand Rapids, Michigan, farm facility

To meet rapidly increasing demand for our locally-grown produce, recently announced it newest indoor farm in Grand Rapids, Michigan. "We broke ground in late December and planted the first seeds in March – just three... more »

When to switch from black to white plastic mulch

High temperatures (90° F or higher) coupled with clear skies can lead to heat buildup on the surface of black plastic mulched soils. We have found temperatures of over 140° F at the surface of... more »

Research could prove profitable to indoor farmers growing leafy greens

There is a free, online resource that growers can use to help make their indoor farming businesses more productive and profitable. It’s a website featuring research results from six horticulture, engineering and agricultural economics professors... more »

Treatments for tipburn in Brassica crops and lettuce outlined

Cauliflower, cabbage, Brussels sprouts, Chinese cabbage (Napa cabbage) and lettuce are susceptible to tipburn. This problem can cause severe economic losses. Tipburn is a breakdown of plant tissue inside the head of cabbage, Chinese cabbage... more »

FDA to sample lettuce grown in Salinas Valley, California

The U.S. Food and Drug Administration announced May 11 it will be collecting and testing samples of lettuce grown in California’s Salinas Valley from local commercial coolers from May through November 2021. The agency will... more »

Guidelines for managing western flower thrips in California lettuce

The western flower thrips, Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae) is one of the major pests of lettuce in California. It has a wide host range including several vegetable, ornamental, and other cultivated or wild plants.... more »