PLANT PROTECTION 1 â Pests, Diseases and Weeds

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PLANT PROTECTION 1 – Pests, Diseases and Weeds LIST OF SOME SPECIES(contd) There are many potentially serious grass weeds not yet in Australia, eg Asian strangletop Japanese lovegrass COMMON NAME MONOCOTYLEDONS (narrowleaved weeds) Grass family (Poaceae) Annual ryegrass (Lolium rigidum) Rhizomatous bamboo (Phyllostachys spp.) Barley grasses (Hordeum spp.) Blady grass (Imperata cylindrica) Blue couch grass (Cynodon incompletus) Couchgrass (Cynodon dactylon) Brome grasses (Bromus spp.) Giant reed (Arundo donax) TYPE OF WEED Check current status of weeds NOXIOUS (in some areas) Noxious WONS 20 ENV (in some areas) ENV Noxious ENV Olive Hymenachne (Hymenachne amplexicoulis) Noxious WONS ENV Pampas grass (Cortaderia selloana) Noxious ENV Parramatta grass (Sphaerobolus fertilio) ENV Paspalum (Paspalum dilatatum) Noxious ENV Summer grass (Digitaria sanguinalis) Wild oats (Avena fatua, A. ludoviciana) Winter grass (Poa annua) African love grass (Eragrostis curvula) Chillean needlegrass (Nassella neesiana) Lobed needle grass (N. charruana) Mexican feather grass (N. tenuissima) Serrated tussock (N. trichotoma) Noxious Noxious Noxious Noxious Noxious WONS WONS Asparagus family (Asparagaceae) Asparagus fern (Asparagus scandens) Bridal creeper (Asparagus asparagoides) Noxious WONS ENV ENV ENV ENV ENV Garden escapes Iris family (Iridaceae) Cape tulips (Moraea spp.) Harlequin flower (Sparaxis bulbifera) Monbretia (Crocosmia x crocosmiiflora) Onion grass (Romulea spp.) Watsonia (Watsonia meriana var. bulbillifera) Lily family (Family Liliaceae) Onion weed (Asphodelus fistulosus) Three-corner garlic (Allium triquetrum) Noxious Noxious Noxious Noxious Noxious ENV ENV ENV ENV Noxious Noxious ENV Sedges (Cyperaceae) Mullumbimby couch (Cyperus brevifolius) Nutgrass (Cyperus rotundus) Tall spikerush (Eleocharis sphacelata) Noxious ENV ENV Rushes (Juncaceae) Toad rush (Juncus bufonius) Family Araceae Arum lily (Zantedeschia aethiopica) Noxious Family Typhaceae Cumbungis (Typha spp.) Noxious WEED PROBLEMS ARE EVER-CHANGING. Shifts in weed flora have taken place throughout history, the status of weeds is continually changing. Obtain up-to-date local information on noxious weeds, WONS, environmental weeds (ENV) and garden escapes either from your State/Territory Dept of Agriculture or an appropriate website. Noxious weed lists for Australian states and Territories are regularly updated www.weeds.gov.au/ 418 Weeds - Biology, classification and identification
PLANT PROTECTION 1 – Pests, Diseases and Weeds Description of some weeds species Dicotyledons (broadleaved weeds) – .ROSETTES. (some weeds are only rosettes at certain stages of growth) CAPEWEED (Arctotheca calendula) Type Annual or biennial herb. Declared noxious weed in Tasmania. Agricultural weed, can be abundant in waste places, pasture, taints milk. Host for redlegged earth mites. Leaves Deeply lobed to the midrib. Thick, fleshy, very hairy, silvery gray-green above, silvery white down beneath. Rosetted with no milky sap. Flowers Solitary, single yellow with black or orange center, on singular stems. Seeds Small nutlets enclosed in a woolly ball. Roots Strong fibrous roots. Spread By seed. Asteraceae Flowering plant, yellow flowers DANDELION (Taraxacum officinale) Type Persistent but shortlived, herbaceous perennial herb. Garden weed, waste places, invades lawns. Often confused with catsear (Hypchaeris radicata) which has thinly branched flower stems (see front cover). Leaves Irregularly toothed, smooth shiny light green with milky sap (latex), rosette. Flowers Solitary double yellow daisy on single hollow stem. Seeds With a pappus. Widespread in temperate Australia. Roots Thick, deep fleshy tap root. Spread By seed and by cut-up pieces of root; spread by cultivation. Asteraceae Flowering plant, yellow flowers, tap root Weeds - Biology, classification and identification 419
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Insect secretions PLANT PROTECTION
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Control methods Cultural methods.
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Root structure of dock (Rumex spp.)
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PLANT PROTECTION 1 â Pests, Diseases and Weeds

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PLANT PROTECTION 1 â Pests, Diseases and Weeds