Spinach Pest Management Guidelines
UC agricultural management guidelines for control of spinach pests. Relative Toxicities of Pesticides Used in Spinach to Natural Enemies and Honey Bees (11/05) Spinach Weed Photo Gallery, with Common and Scientific Names (11/05) Insecticide ... [... more]
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Virus Diseases
Symptoms of various virus diseases often resemble each other and may be difficult to differentiate in the field. Virus-infected leaves exhibit chlorosis, mosaics, ringspots, mottling, crinkling (puckering), and other symptoms. Some viruses cause ... [... more]
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Scientific names: Liriomyza huidobrensis, L. sativae, ...
Adults are small black to gray flies with yellow markings. Females puncture leaves to feed on plant sap and lay eggs within the leaf tissues. After 2 to 4 days, eggs hatch. Larvae feed between the upper and lower surface of the leaves, making ... [... more]
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Pathogen: Colletotrichum dematium
Initial symptoms of anthracnose are small, circular, water-soaked lesions on both young and old leaves. Lesions later enlarge, turn brown to tan in color, and become thin and papery. In severe cases, lesions coalesce and result in severe ... [... more]
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Caterpillars (Lepidopterous Pests)
UC Management Guidelines for Caterpillars (Lepidopterous Pests) on Spinach. Beet armyworms lay their eggs in distinctive cottony masses on leaf surfaces. Newly hatched beet armyworms are small, green worms that often feed in groups. Older beet ... [... more]
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BURNING NETTLE
Little mallow, also known as cheeseweed, is a very competitive weed in spinach. It is common in the coastal areas, as well as in the inland and desert winter-production regions. It is marginally controlled by herbicides used before the crop ... [... more]
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Cladosporium Leaf Spot
UC Management Guidelines for Cladosporium Leaf Spot on Spinach. Cladosporium leaf spot is characterized by round, tan leaf spots that rarely exceed 0.25 inch in diameter. Dark green spores and mycelium later develop in the centers of these spots. ... [... more]
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Field selection
Spinach is a quick-maturing, cool-season, hardy vegetable crop that is grown for both fresh markets (field packed in bunches or lightly processed in cellophane bags) and processing markets (frozen products). A fresh-market spinach crop can be ... [... more]
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Scientific names: Limonius spp. and others
Wireworms are beetle larvae that are found in soil where they feed on seeds and roots. They are shiny, slender, cylindrical, hard-bodied, yellow to brown larvae that can be found at all times of the year and in almost any kind of soil. The larval ... [... more]
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Damping-off and Root Rot
UC Management Guidelines for Damping-Off and Root Rot on Spinach. Symptoms of damping-off and root rot consist of stunted plants, yellowed lower leaves, general poor growth, wilting, and eventual collapse and death of plants. Roots of infected ... [... more]
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Pathogen: Peronospora farinosa f. sp. spinaciae
Initial symptoms of downy mildew consist of bright yellow spots that form on cotyledons and leaves of all ages. With time, these spots can enlarge and become tan and dry. Close inspection of the underside of the leaf often reveals the purple ... [... more]
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Spinach Crown Mite
Spinach crown mites are tiny, almost transparent mites with prominent long hairs, or setae. They are soil and leaf dwelling. Above ground, they live deep in the crown of the spinach plant. Crown mite eggs are transparent and spherical and arelaid ... [... more]
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