Weed Identification for Horticultural Crops

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PDF 6 pages 47 weed species images by Alabama Cooperative Extension System: Mike Patterson, Extension Weed Scientist, Professor, and Dale Monks, Extension Crop Physiologist Associate Professor, both in Agronomy and Soils at Auburn University, and Bobby Boozer, Area Horticulturist, and Jim Bannon, Director, E.V. Smith Research Center Weed - Identification for Horticultural Crops ANR-1128. Most of the weeds that infest vegetable crops are indigenous to all row crops grown in Alabama. Annual and perennial weeds and grasses can cause yield and quality losses in commercial vegetable crops and often are harder to remove in vegetables because of the limited herbicide registrations for these crops. Because herbicides available for weed management in commercial vegetables are limited, we have listed a number of Integrated Pest Management (IPM) practices that can be used to help manage weeds in these crops. This is certainly not an exhaustive list?it is a list of suggestions for your consideration.

Grasses

bermudagrass, common Cynodon dactylon (L.) Pers. S, P

broadleaf signalgrass Brachiaria platyphylla (Griseb.)Nash S, A

large crabgrass Digitaria sanguinalis (L.) Scop. S, A

goosegrass Eleusine indica (L.) Gaertn. S, A

johnsongrass Sorghum halepense (L.) Pers. S, P

Texas panicum Panicum texanum Buckl. S, A

Small-seeded broadleaf weeds

bristly starbur Acanthospermum hispidum DC. S, A

burgherkin Cucumis anguria L. S, A

carpetweed Mollugo verticillata L. S, A

cocklebur, common Xanthium strumarium L. S, A

coffee senna Senna occidentalis S.Wats. S, A

croton, tropic Croton glandulosus var. S, A septentrionalis Muell.-Arg.

croton, woolly Croton capitatus Michx. S, A

cutleaf eveningprimrose Oenothera laciniata Hill W, A/B

dodder Cuscuta species parasitic A

Florida beggarweed Desmodium tortuosum (Sw.) DC. S, A

Florida pusley Richardia scabra L. S, A

horseweed Conyza canadensis (L.) Cronq. W/S, A

jimsonweed Datura stramonium L. S, A

lambsquarters, common Chenopodium album L. S, A

pigweed, redroot Amaranthus retroflexus L. S, A

pigweed, tumble Amaranthus albus L. S, A

ragweed, common Ambrosia artemisiifolia L. S, A

sida, arrowleaf Sida rhombifolia L. S, A

sida, prickly Sida spinosa L. S, A

sicklepod Senna obtusifolia L. S, A

spiny amaranth Amaranthus spinosus L. S, A

spurge, prostrate Euphorbia humistrata S, A Engelm. ex Gray

spurge, spotted Euphorbia maculata L. S, A

Virginia pepperweed Lepidium virginicum L. W, A

citronmelon Citrullus lanatus var. S, A citroides (Bailey) Mansf.

wild poinsettia Euphorbia heterophylla L. S, A

Morningglories

bigroot morningglory Ipomoea pandurata (L.) G.F.W. Meyer S, P

cypressvine morningglory Ipomoea quamoclit L. S, A

entireleaf morningglory Ipomoea hederacea var. S, A integriuscula Gray

ivyleaf morningglory Ipomoea hederacea (L.) Jacq. S, A

palmleaf morningglory Ipomoea wrightii Gray S, A

pitted morningglory Ipomoea lacunosa L. S, A

purple morningglory Ipomoea turbinata Lag. S, A

red morningglory Ipomoea coccinea L. S, A

smallflower morningglory Jacquemontia tamnifolia (L.) Griseb. S, A

tall morningglory Ipomoea purpurea (L.) Roth S, A

Other perennial weeds

Carolina horsenettle Solanum carolinense L. S, P

nutsedge, purple Cyperus rotundus L. S, P

nutsedge, yellow Cyperus esculentus L. S, P

maypop passionflower Passiflora incarnata L. S, P

trumpetcreeper Campsis radicans (L.) Seem. S, P ex Bureau

Regions Impacted: (See related documents in region)

USA,

Southeast,

Southern

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