Asparagus Pest Management Guidelines
UC agricultural management guidelines for control of asparagus pests. Relative Toxicities of Insecticides Used in Asparagus to Natural Enemies and Honey Bees (11/05) Asparagus Weed Photo Gallery, with Common and Scientific Names (11/05) Asparagus ... [... more]
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Pathogen: Fusarium oxysporum f.sp. asparagi
Mature plants infected with Fusarium gradually decline in productivity and growth. During the summer, infected plants are characterized by one to several stunted, bright yellow ferns. A reddish brown vascular discoloration, which may extend into ... [... more]
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Crown and Spear Rot
UC Management Guidelines for Crown and Spear Rot on Asparagus. Phytophthora spear rot is characterized by soft, water-soaked lesions on shoots at, slightly above, or below the soil level. The lesions elongate rapidly and become light brown. As ... [... more]
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Western yellowstriped armyworm: Spodoptera praefica
Beet armyworms may be abundant on asparagus ferns in low desert valleys of Imperial and Riverside counties anytime from May to October. In other locations they are relatively minor pests. The adult is a small, mottled gray or dusky-winged moth. ... [... more]
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Swamp smartweed
Information about Special Weed Problems in Asparagus. . Yellow and purple nutsedge are perennial weeds that commonly reproduce from underground tubers that survive for 2 to 5 years in the soil. The tubers are easily spread by cultivation ... [... more]
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European Asparagus Aphid
UC Management Guidelines for European Asparagus Aphid on Asparagus. The European asparagus aphid is a small blue-green to gray-green aphid about 0.06 inch (1.5 mm) in length. The aphid is often covered with a powdery wax. Unlike most aphids, the ... [... more]
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Asparagus Beetles
UC Management Guidelines for Asparagus Beetles on Asparagus. Asparagus beetle larvae are dark green-gray grubs about 1/3 inch (9 mm) long when fully grown. Adults are blue-black beetles with a red prothorax. Their elytra (wing covers) have yellow ... [... more]
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Asparagus Virus I and II
UC Management Guidelines for Asparagus Virus I and II on Asparagus. Asparagus viruses I and II produce no distinct symptoms unless both viruses infect the plant. Either virus by itself may only slightly reduce vigor. When both are present in the ... [... more]
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Direct Field Seeding.
Asparagus is a perennial crop that is produced in several regions of California. Major counties of production include San Joaquin, Monterey, Imperial, and Orange. Each of these areas has specific weed problems and differences in climate and soil ... [... more]
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UC IPM: Asparagus Weed Photo Gallery with Common and ...
Asparagus Weed Photo Gallery with Common and Scientific Names. Polygonum coccineum Setaria pumila Polygonum persicaria smartweed, swamp [... more]
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Purple Spot
Purple spot is of major concern when new spears are emerging and being harvested. The pathogen produces elliptical, slightly sunken lesions 0.03 to 0.06 inch across and up to 0.125 inch long. Initially lesions are reddish-purple and later develop ... [... more]
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Darksided cutworm: Euxoa messoria
Cutworm larvae feed at night and come in various colors and patterns but always appear as smooth-skinned caterpillars to the naked eye. They frequently roll into a C-shape when disturbed. The mature variegated curworm larva is yellow to brown, a ... [... more]
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