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Stem rust fungus Stock Photos and Images
RMGPYXT7–Faba or broad bean rust, Uromyces viciae-fabae, pustules lesions on a broad bean stem, August
RFEYWMBJ–Uredium, the spore creating body, of the rust fungus Puccinia urticata on the stem of a Common Stinging Nettle (Urtica dioca).
RM2C0292W–Garlic or leek rust (Puccinia allii) fungal disease pustules on garlic leaves and stem, Berkshire, June
RF2WPD8TB–A member of the wood-sorrel family, Oxildaceae, this oxalis shows sign of oxalis rust, a Puccinia fungus.
RMEBX0D5–common barberry, European barberry (Berberis vulgaris), leaves with Puccinia graminis, stem rusts, Germany, North Rhine-Westphalia
RF2JDWBK8–Disease of plant in the family Rosaceae. Damage to rose rust. Phragmidium tuberculatum. Sick of ornamental rose tree. Plant parasites. The concept of
RFT602R7–An image of Stem Rust, It also known as puccinia graminis. The stem, black and cereal rusts are caused by the fungus puccinia graminis, vintage line d
RFMD87R2–A Tree Bumblebee ( Bombus hypnorumon) on a blackberry leaf. The leaf is showing signs of rust fungus.
RMW7P88A–Botanist using eye piece to identify Black Stem Rust, a fungus species which threatens future of world wheat crops. Radnorshire, Wales, UK, June.
RF2G8BRE2–Fungal spots on leaves. Common Plant Diseases. Black spot or blotches on garden plant. Blight infected stems. Canker wounds by bacterial pathogens
RM2C02927–Garlic or leek rust (Puccinia allii) fungal disease pustules on garlic leaves and stem, Berkshire, June
RM2C4X4FP–Corn, maize or sorghum rust (Puccinia sorghi) fungus disease pustules on maize or corn leaf, Illinois, USA
RM2C4X4FJ–Corn, maize or sorghum rust (Puccinia sorghi) fungus disease pustules on maize or corn leaf, Illinois, USA
RF2PR0TM6–Disease of plant in the family Rosaceae. Damage to rose rust. Phragmidium tuberculatum. Sick of ornamental rose tree. Plant parasites. The concept of
RFT5RAJ7–A picture showing different parts of Rust Fungus. These parts include Cassia, nictitans, parasite, Ravenelia, teleutospores, Uredinales, uredospores,
RF2G8BRFJ–Fungal spots on leaves. Common Plant Diseases. Black spot or blotches on garden plant. Blight infected stems. Canker wounds by bacterial pathogens
RM2AJ378Y–Farm and garden annual : spring 1907 . semi-arid districts, being ex-tremely resistant of drought, the attack of fungus pests, rust and smut, always fur-nishing an excellent hard grain, with an increase in quantity and quality of gluten,and without a corresponding decrease in yield, as is the ease with other sorts ofwheat. Enormous yields of Durum Wheat are reported f.-om Kansas. Dakota. Nebraskaand the extreme Western States, in some instances reaching SO bushels per acre. Wehave before us reports of crops of Blue Stem Wheat in North Dakota not worth har-vesting-, w-hile in the adjoining fiel
RM2J2A695–Phytopathology. Broun spotting of apple leaves (ascochytosis, Ascochyta blight) plant disease is caused by fungi of the genus Ascochyta. Ultra-macro
RM2E5A9BK–Mildew on wheat stem, fungus Puccinia graminis, cereal rust, blue background, photomicrograph
RM2H1YJ20–Fungi, Puccinia graminis, teleutospores in wheat stem, TS, Darkfield photomicrograph, rust fungus
RF2GYAP82–Common Plant Diseases. Peach leaf curl on currant leaves. Puckered or blistered leaves distorted by pale yellow aphids. Man holding reddish or yellowi
RM2H1YGCY–Fungi, Puccinia graminis, teleutospores in wheat stem, TS, Darkfield photomicrograph, rust fungus
RMMCK9J9–. Fig. 38.—Spores of stem-rust fungus of wheat, barley, rye, and oats: A, B, C, black-rust pustules; D, E, F, red-rust spores; G, H, I, J, black-rust spores. (Enlarged about 250 times.) (Courtesy of McAlpine; from Bui. 511.) the former being the common species on the Pacific Coast. Affected plants are usually shorter than normal ones. The head has a swollen appearance and the individual kernels push out of the husks. The inside of the ker-
RF2G8BRF0–Fungal spots on leaves. Common Plant Diseases. Black spot or blotches on garden plant. Blight infected stems. Canker wounds by bacterial pathogens
RMPG4EHE–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 389 The fungus threads, which are found in the swollen parts of the host plant and which cause the stimulation, whereby the increase of growth or swelling of the stem takes place, form their winter rust-spores inside of the cells of the epidermis of. Fig. 206.—Sunflower rust. Winter and summer spore clusters on the leaf of <l sunflower. Original. the host. This epidermis is much altered on account of the action of the fungus. Its cells have thin, instead of thick, outer walls, and are much increased in size. These spores
RMTXMY0F–Downy Mildew spreading on opium poppy leaf destroying the cells and causing them to dry out and decompose, mildew Peronospora arborescens symptoms
RMRCDHE2–. Diseases of small grain crops in Illinois. Grain. /// Oati jbtieaA&l In Illinois oats are attacked by a group of diseases similar in kind and in effect to those that attack the other small cereals: two rust diseases, two smuts, two important leaf spots and a number of diseases common to all cereals. Stem rust of oats, though technically the same disease as stem rust of wheat, is essentially an oats disease, since the race of the stem rust fungus that attacks oats is so highly specialized as to be unable to attack other cereals. Crown rust of oats corresponds to the leaf rusts of wheat, b
![Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] PUCCINIA 311 I as in other instances, one attack implies immunity in the j future. i ! Pink rust {Puccinia arenariae, Wint.) often causes injury j to cultivated pinks and carnations. It forms small blackish spots arranged in irregular circles on the leaves and stem. H', ; . .••.♦. ... ..V -- Fig. 91.—Puccinia malvacearum. Hollyhock leaf showing pustules of fungus ; 2, teleutospores, one germinating. Highly mag. Teleutospores only are present. These are fusoid or clavate, apex Stock Photo](https://c8.alamy.com/comp/T1HPK3/diseases-of-cultivated-plants-and-diseases-of-cultivated-plants-and-trees-diseasesofcultiv00massuoft-year-1910-puccinia-311-i-as-in-other-instances-one-attack-implies-immunity-in-the-j-future-i-!-pink-rust-puccinia-arenariae-wint-often-causes-injury-j-to-cultivated-pinks-and-carnations-it-forms-small-blackish-spots-arranged-in-irregular-circles-on-the-leaves-and-stem-h-v-fig-91puccinia-malvacearum-hollyhock-leaf-showing-pustules-of-fungus-2-teleutospores-one-germinating-highly-mag-teleutospores-only-are-present-these-are-fusoid-or-clavate-apex-T1HPK3.jpg "Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] PUCCINIA 311 I as in other instances, one attack implies immunity in the j future. i ! Pink rust {Puccinia arenariae, Wint.) often causes injury j to cultivated pinks and carnations. It forms small blackish spots arranged in irregular circles on the leaves and stem. H', ; . .••.♦. ... ..V -- Fig. 91.—Puccinia malvacearum. Hollyhock leaf showing pustules of fungus ; 2, teleutospores, one germinating. Highly mag. Teleutospores only are present. These are fusoid or clavate, apex Stock Photo")
RMT1HPK3–Diseases of cultivated plants and Diseases of cultivated plants and trees diseasesofcultiv00massuoft Year: [1910?] PUCCINIA 311 I as in other instances, one attack implies immunity in the j future. i ! Pink rust {Puccinia arenariae, Wint.) often causes injury j to cultivated pinks and carnations. It forms small blackish spots arranged in irregular circles on the leaves and stem. H', ; . .••.♦. ... ..V -- Fig. 91.—Puccinia malvacearum. Hollyhock leaf showing pustules of fungus ; 2, teleutospores, one germinating. Highly mag. Teleutospores only are present. These are fusoid or clavate, apex
RM2JYD9H1–Phytopathology. Broun spotting of apple leaves (ascochytosis, Ascochyta blight) plant disease is caused by fungi of the genus Ascochyta. Ultra-macro
RF2M243D4–or Rosehip disease what is making the bush drying. Plant disease of Wild Rose on dandelion Dog Rose field background. High quality photo
RF2GYAP7G–Common Plant Diseases. Fungal spots on leaves. Black spot or blotches on garden plant. Blight infected stems. Canker wounds by bacterial pathogens. Ma
RMMCKWE6–. Fig. 4.—Stem rust on wheat. The ragged-edged scars are the red pustules, filled with brick-red spores by which the fungus propagates itself during the summer. one most commonly encountered during the growing season and may occur on any above-ground parts of the plant. Stem rust on wheat, fig. 4, is recognized readily by the elon- gated, ragged pustules it produces on stem, leaf sheath, blade, chaff, beard, and occasionally on the young kernel. Pustules usu- ally begin to appear in late May or early June in southern Illinois and increase in number until the wheat is ripe. Soon after appear- i
RF2G8C1HH–Peach leaf curl on currant leaves. Common Plant Diseases. Puckered or blistered leaves distorted by pale yellow aphids. Man holding reddish or
![. Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores Stock Photo](https://c8.alamy.com/comp/PG4EJA/minnesota-plant-diseases-plant-diseases-74-minnesota-plant-diseases-occurs-on-other-more-or-less-closely-related-plants-the-fungus-mycelium-gains-entrance-to-the-plant-in-the-spring-and-first-pro-duces-cluster-cups-these-are-followed-by-the-summer-spores-throughout-the-summer-months-forming-small-red-brown-patches-quotlg-199leaf-rust-of-roses-the-cluster-cup-stage-on-the-stems-and-leaves-on-left-is-a-stem-distorted-by-the-cluster-cup-cushions-photograph-by-h-cuzner-upon-large-dark-red-brown-spots-in-great-abundance-on-the-lower-surface-of-the-leaves-the-summer-spores-PG4EJA.jpg ". Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores Stock Photo")
RMPG4EJA–. Minnesota plant diseases. Plant diseases. ;74 Minnesota Plant Diseases. occurs on other more or less closely related plants. The fungus mycelium gains entrance to the plant in the spring and first pro- duces cluster cups. These are followed by the summer spores, throughout the summer months, forming small red-brown patches. ]"lG. 199.—Leaf rust of roses. The cluster-cup stage on the stems and leaves. On left is a stem distorted by the cluster-cup cushions. Photograph by H. Cuzner upon large, dark, red-brown spots in great abundance, on the lower surface of the leaves. The summer-spores
RMTXMXWH–Downy Mildew spreading on opium poppy leaf destroying the cells and causing them to dry out and decompose, mildew Peronospora arborescens symptoms
RMRCCK71–. Diseases of wheat, oats, barley, and rye. Grain. BOEWE: DISEASES OF WHEAT, OATS, BARLEY, AND RYE 19 per cent of the potential crop. In about 50 per cent of the years since 1922, the loss has been a trace of the crop, but in 1937 the reduction in yield was estimated at 12 per cent. Stem rust causes low yields and test weight, poor quality, shriveled grains, and lodging of stems if the attack is severe. Appearance.—The stem rust fungus produces two spore stages, the red and the black, on wheat. The red spore stage is the. Fig. 4.—Stem rust on wheat. The ragged-edged scars are the red pustules,
RF2HA77FG–Stem rust, also known as cereal rust, black rust, red rust or red dust, is caused by the fungus Puccinia graminis.
RM2K0Y0YF–Phytopathology. Broun spotting of apple leaves (ascochytosis, Ascochyta blight) plant disease is caused by fungi of the genus Ascochyta. Ultra-macro
RF2M8F8J5–or Rosehip disease what is making the bush drying. Plant disease of Wild Rose on dandelion Dog Rose field background. High quality photo
RMT1H8FT–Diseases of field crops (1941) Diseases of field crops diseasesoffieldc121smit Year: 1941 64 California Agricultural Extension Service [Gib. 121 black spore pustules of the fungus Septoria tritici. Tin* leaves become blighted, the plants weakened, the grain shriveled, and the yield reduced. The fungus flourishes in cool, moist weather on early-sown wheat. No control method is known. Crop rotation is beneficial. Stem Rust.—This rust appears about the time of heading and attacks both the leaves and the leaf sheaths, which enclose the stem (fig. 31, p. 51). The pustules are long and dark red at
RF2GYAP8A–Common Plant Diseases. Peach leaf curl on currant leaves. Puckered or blistered leaves distorted by pale yellow aphids. Man holding reddish or yellowi
RMMCKX3G–. Fig. 6.—Black stem rust on wheat. The ragged-edged scars are the black pustules which bear the spores by which the rust fungus overwinters. appear in June and from that time on increase in number until the wheat is ripe. Soon after appearing, they rupture the stem tissue, exposing the powdery, red mass of summer spores. Frag- ments of the wheat epidermis adhere to the sides and ends of the pustules, giving them a ragged appearance, especially at the ends. This ragged appearance and the length of the pustules are two characteristics which distinguish black stem rust from leaf rust. Individual
RF2G8C466–Peach leaf curl on currant leaves. Common Plant Diseases. Puckered or blistered leaves distorted by pale yellow aphids. Man holding reddish or
RMPG3Y98–. Manual of fruit diseases . Fruit. Fig. 114. — Quince-rust. Fig. 115.— Rust on quince- twig. at the stem end, others at the calyx-end. Again the whole fruit is involved and it may fall. More often, however, it hangs to the tree, dies, and becomes black and hard. There is usually considerable distortion. Twig-infections (Fig. 115) are commonly found at the base of new shoots, and knots are produced which resemble black- knot of plums. Cause. The quince-rust fungus, Gymnosporangium clampes, has a peculiar life-history. A part of its cycle is spent on the quince. Please note that these images ar
RF2HA77HB–Stem rust, also known as cereal rust, black rust, red rust or red dust, is caused by the fungus Puccinia graminis.
RM2BMXA4W–Carnation rust (Uromyces dianthi) pustles erupting on Dianthus spp. leaf base and stem, Italy
RMRCDP7A–. Diseases of field crops. Plant diseases. H gf0b,Mli. Fig. 38.—Spores of stem-rust fungus of wheat, barley, rye, and oats: A, B, C, black-rust pustules; D, E, F, red-rust spores; G, H, I, J, black-rust spores. (Enlarged about 250 times.) (Courtesy of McAlpine; from Bui. 511.) the former being the common species on the Pacific Coast. Affected plants are usually shorter than normal ones. The head has a swollen appearance and the individual kernels push out of the husks. The inside of the ker-. Please note that these images are extracted from scanned page images that may have been digitally enha
RM2RDKRNH–Hawthorn juniper rust (Gymnosporangium sp.) rust pustule swelling on the stem and spike of hawthorn (Crataegus monogyna), May
RM2KF7BE0–Phytopathology. Broun spotting of apple leaves (ascochytosis, Ascochyta blight) plant disease is caused by fungi of the genus Ascochyta. Ultra-macro
Search Results for Stem rust fungus Stock Photos and Images (252)
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