Sorghum:Photos

From AgWiki
Revision as of 07:20, 13 March 2016 by Dlnagwiki (Talk | contribs) (Created page with "Sorghum Pest and Nutritional Disorder Photos == Aluminum(Al)(normal)__Aluminum(Al)(excess) == ''Aluminum(Al)(normal), Aluminum(Al)(excess)'' Aluminum(Al) (R), no...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Sorghum Pest and Nutritional Disorder Photos






Contents

Aluminum(Al)(normal)__Aluminum(Al)(excess)

Aluminum(Al)(normal), Aluminum(Al)(excess)

Aluminum(Al) (R), normal Aluminum(Al) levels (L) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG48.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum(Al) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG25.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum(Al) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG29.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum(Al) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG33.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum(Al) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG34.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum(Al) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG37.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum(Al) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG38.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum(Al) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG44.JPG






Aluminum(Al)_excess,_Genotype_differences

Aluminum(Al) excess, Genotype differences

Aluminum(Al) excess in sorghum, Genotype differences (NB3494, TX415, Martin, K557, Wheatland, NB9040, SC369-3-lJB) (Ralph B. Clark, USDA-ARS)

tn_RCSORG30.JPG






Aluminum(Al)_excess

Aluminum(Al) excess

Aluminum excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG21.JPG






Anthracnose

Anthracnose

Anthracnose of the peduncle Colletotricum graminicola, healthy plants on the right. This disease also occurs as lesions on the leaves and midribs.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG23.JPG






Ba_excess

Ba excess

Ba excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG27.JPG






Bacterial_streak_(Xanthomonas_campestris_pv)

Bacterial streak (Xanthomonas campestris pv)

Bacterial streak Xanthomonas campestris pv holicola. Produces water soaked streaks that may have a crusty exudate on both sides of the leaf.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG11.JPG






Bacterial_stripe_(Pseudomonas_andropogonas)

Bacterial stripe (Pseudomonas andropogonas)

Bacterial stripe Pseudomonas andropogonas(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG09.JPG






Bacterial_stripe_(Pseudomonas_andropogonas)

Bacterial stripe (Pseudomonas andropogonas)

Bacterial stripe Pseudomonas andropogonas(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG10.JPG






Bacterial_top_rot_(Erwinia_chrysanthemi)

Bacterial top rot (Erwinia chrysanthemi)

Bacterial top rot Erwinia chrysanthemi showing a field view with dead tops which pull out easily and have a very putrid smell.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG12.JPG






Bacterial_top_rot_(Erwinia_chrysanthemi)

Bacterial top rot (Erwinia chrysanthemi)

Bacterial top rot Erwinia chrysanthemi showing a split stalk with the disease only part way down the stalk.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG13.JPG






Bird_injury

Bird injury

Bird injury. Birds attack at the milk stage and may have a strong preference for certain genotypes. Most severe damage occurs near wood lots but can occur anywhere.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG51.JPG






Boron_deficiency

Boron deficiency

Boron deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG76.JPG






Boron_deficiency

Boron deficiency

Boron deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG80.JPG






Boron_excess

Boron excess

Boron excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG52.JPG






C,_Cd,_Ba_excess

C, Cd, Ba excess

C, Cd, Ba excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG24.JPG






Ca,_Mg,_P,_N,_K,_deficiency

Ca, Mg, P, N, K, deficiency

Ca, Mg, P, N, K, deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG69.JPG






Ca_(CaCl2)_excess

Ca (CaCl<->2</->) excess

Ca (CaCl<->2</->) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG46.JPG






Ca_excess

Ca excess

Ca excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG50.JPG






Calcium_deficiency

Calcium deficiency

Calcium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG03.JPG






Calcium_deficiency

Calcium deficiency

Calcium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG12.JPG






Calcium_deficiency

Calcium deficiency

Calcium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG16.JPG






Calcium_deficiency

Calcium deficiency

Calcium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG20.JPG






Cd_excess

Cd excess

Cd excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG36.JPG






Charcoal_rot_(Macrophomina_phaseolina)

Charcoal rot (Macrophomina_phaseolina)

Charcoal rot Macrophomina phaseolina Common and causing lodging in hot, dry climates. Note the small black grains, called sclerotia, on the shredded vascular bundles.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG20.JPG






Chinch_bugs,_(Blissus_leucopterus)

Chinch bugs, (Blissus leucopterus)

Chinch bugs, Blissus leucopterus. Can be a major problem in dry years. A very low insect population can kill seedlings. Photo shows a field of seedlings with severe damage by chinch bugs, (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG45.JPG






Chinch_bugs,_(Blissus_leucopterus)

Chinch bugs, (Blissus leucopterus)

Chinch bugs, Blissus leucopterus. Can be a major problem in dry years. A very low insect population can kill seedlings. Screening nursery showing sorghum genotype variation to chinch bug injury, (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG46.JPG






Chinch_bugs,_(Blissus_leucopterus)

Chinch bugs, (Blissus leucopterus)

Chinch bugs, Blissus leucopterus. Can be a major problem in dry years. A very low insect population can kill seedlings. Photo shows close up of chinch bug injury.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG47.JPG






Co_excess

Co excess

Co excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG22.JPG






Co_excess

Co excess

Co excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG39.JPG






Colletotricum_1

Colletotrichum graminicola cluster; setae characteristic, fruiting (H.L. Warren, USDA)

tn_SORG013.JPG






Cr_excess

Cr excess

Cr excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG40.JPG






Crazy_top_downy_mildew_(Sclerophthora_macrospora)

Crazy top downy mildew (Sclerophthora macrospora)

Crazy top downy mildew Sclerophthora macrospora. Field view, note puddled soil, infecting spores swim and infected seedlings must be in standing water. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG21.JPG






Crazy_top_downy_mildew_(Sclerophthora_macrospora)

Crazy top downy mildew (Sclerophthora macrospora)

Crazy top downy mildew Sclerophthora macrospora. Healthy plant flanked by two diseased plants.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG22.JPG






Cu_deficiency

Cu deficiency

Cu deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG63.JPG






Cu_excess

Cu excess

Cu excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG56.JPG






Cygon_Damage

Cygon Damage

Damage from Cygon application. Can easily be confused with leaf spotting pathogens so look for the pattern of spots on the leaf.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG42.JPG






Ergot_of_sorghum_(Claviceps_africana)

Ergot of sorghum Claviceps africana)

Ergot of sorghum Claviceps africana. Shows the white fungal mass emerging from the infected floret. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG14.JPG






Ergot_of_sorghum_(Claviceps_africana)

Ergot of sorghum (Claviceps africana)

Ergot of sorghum Claviceps africana. Shows honeydew beginning to be produced. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG15.JPG






Ergot_of_sorghum_(Claviceps_africana)

Ergot of sorghum (Claviceps africana)

Ergot of sorghum Claviceps africana. Large drops of spore containing honeydew dripping from the infected florets. The honeydew is sweet and the disease is called sugary disease in other parts of the world. Introduced into the US in 1997.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG16.JPG






Etiococcum_sp.

Etiococcum sp.

Etiococcum sp. Leaf symptoms. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG02.JPG






Etiococcum_sp.

Etiococcum sp.

Etiococcum sp. Leaf symptoms(sporulating). (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG03.JPG






European_corn_borer_(Ostrinia_nubilalis)

European corn borer (Ostrinia nubilalis)

European corn borer Ostrinia nubilalis is often found boring in the pith of the peduncle.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG50.JPG






Fusarium_stalk_rot_(Fusarium_sp.)

Fusarium stalk rot (Fusarium sp.)

Fusarium stalk rot Fusarium sp. One of the most serious diseases of sorghum. Illustrates severe lodging.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG17.JPG






Fusarium_stalk_rot_(Fusarium_sp.)

Fusarium stalk rot (Fusarium sp.)

Fusarium stalk rot Fusarium sp. Shows the appearance of split stalks. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG18.JPG






Fusarium_stalk_rot_(Fusarium_sp.)

Fusarium stalk rot (Fusarium sp.)

Fusarium stalk rot Fusarium sp. Shows reduced grain yield because of smaller kernels and lodged heads. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG19.JPG






Greenbug_(Schizaphis_graminum)

Greenbug (Schizaphis graminum)

Top of leaf showing greenbug Schizaphis graminum injury (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG43.JPG






Greenbugs_(Schizaphis_graminum)

Greenbugs (Schizaphis graminum)

Bottom of leaf showing greenbugs Schizaphis graminum and one coccinellid larvae feeding on the aphids. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG44.JPG






Head_mold_

Head mold

Head mold, probably several fungi most common are Fusarium sp., Curvularia sp., Alternaria sp. & Colletotricum sp. Occurs mostly in the warm, humid south.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG08.JPG






Hg_excess

Hg excess

Hg excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG28.JPG






Insecticide_Damage

Insecticide Damage

Damage from insecticides. Sorghum is often very susceptible to damage from a variety of insecticides leading to a variety of symptoms.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG41.JPG






Iron(Fe)_deficiency

Iron(Fe) deficiency

Iron(Fe) deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG66.JPG






Iron(Fe)_deficiency

Iron(Fe) deficiency

Iron(Fe) deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG70.JPG






Iron(Fe)_deficiency

Iron(Fe) deficiency

Iron(Fe) deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG74.JPG






Iron(Fe)_deficiency

Iron(Fe) deficiency

Iron(Fe) deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG78.JPG






Iron(Fe)__deficiency

Iron(Fe) deficiency

Iron(Fe) deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG81.JPG





Iron(Fe)__excess

Iron(Fe) excess

Iron(Fe) excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG47.JPG






Iron(Fe)_deficiency

Iron(Fe) deficiency

Iron(Fe) (Severe) deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG62.JPG






K_excess

K excess

K excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG58.JPG






K_SO4_excess

K SO<->4</-> excess

K SO<->4</-> excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG54.JPG






Leaf_blight_(Bipolaris_sp.)

Leaf blight (Bipolaris sp.)

Leaf blight Bipolaris sp. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG07.JPG






Leaf_spot_(Circospora_sp.)

Leaf spot (Circospora_sp.)

Leaf spot Circospora sp. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG06.JPG






Magnisium_deficiency

Magnisium deficiency

Magnisium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG04.JPG






Magnisium_deficiency

Magnisium deficiency

Magnisium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG08.JPG






Mg_deficiency

Mg deficiency

Mg deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG73.JPG






Mg_deficiency

Mg deficiency

Mg deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG77.JPG






MgCl2_excess

MgCl<->2</-> excess

MgCl<->2</-> excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG42.JPG






Mn_deficiency

Mn deficiency

Mn deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG61.JPG






Mn_deficiency

Mn deficiency

Mn deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG65.JPG






Mn_excess

Mn excess

Mn excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG51.JPG






Mo_excess

Mo excess

Mo excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG26.JPG






Na_excess

Na excess

Na excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG59.JPG






NH4_excess

NH<->4</-> excess

NH<->4</-> excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG57.JPG






Ni_excess

Ni excess

Ni excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG35.JPG






Nitrogen_deficiency

Nitrogen deficiency

Nitrogen deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG01.JPG






Nitrogen_deficiency

Nitrogen deficiency

Nitrogen deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG05.JPG






Nitrogen_deficiency

Nitrogen deficiency

Nitrogen deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG09.JPG






Nitrogen_deficiency

Nitrogen deficiency

Nitrogen deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG17.JPG






Nitrogen_rich

Nitrogen rich

Nitrogen rich (L), nitrogen deficiency (R) in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG13.JPG






NO3_Ca_excess

NO<->3</-> Ca excess

NO<->3</-> Ca excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG68.JPG






NO3_excess

NO<->3</-> excess

NO<->3</-> excess in sorghum (root) (Ralph B. Clark, USDA-ARS)

tn_RCSORG64.JPG






P,_K,_Mg,_Mn_deficiency

P, K, Mg, Mn deficiency

P, K, Mg, Mn deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG72.JPG






P_excess

P excess

P excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG41.JPG






P_excess

P excess

P excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG45.JPG






P_excess

P excess

P excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG49.JPG






P_excess

P excess

P excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG53.JPG






Pb_excess

Pb excess

Pb excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG23.JPG






Phosphorus_deficiency

Phosphorus deficiency

Phosphorus deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG07.JPG






Phosphorus_deficiency

Phosphorus deficiency

Phosphorus deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG10.JPG





Phosphorus_deficiency

Phosphorus deficiency

Phosphorus deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG19.JPG






Pokkah_boeng_1

Pokkah boeng N. Zummo, USDA

tn_SORG046.JPG






Potassium_deficiency

Potassium deficiency

Potassium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG02.JPG






Potassium_deficiency

Potassium deficiency

Potassium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG06.JPG






Potassium_deficiency

Potassium deficiency

Potassium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG11.JPG






Potassium_deficiency

Potassium deficiency

Potassium deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG15.JPG






Potyviruses

Potyviruses

There are four distinct species of potyviruses in the US with overlapping symptoms, distribution and host range. All are aphid transmitted. This photo shows mosaic symptoms.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG36.JPG






Potyviruses

Potyviruses

There are four distinct species of potyviruses in the US with overlapping symptoms, distribution and host range. All are aphid transmitted. This photo shows a combination of mosaic and necrotic symptoms.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG37.JPG






Potyviruses

Potyviruses

There are four distinct species of potyviruses in the US with overlapping symptoms, distribution and host range. All are aphid transmitted. A field view of the severe necrotic "red leaf' symptoms. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG38.JPG






Potyviruses

Potyviruses

There are four distinct species of potyviruses in the US with overlapping symptoms, distribution and host range. All are aphid transmitted. With a late infection the only tissue to display the "red leaf' reaction may be the head, leading to death of the rachis branches and "little berry" disease.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG39.JPG






Se_excess

Se excess

Se excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG32.JPG






Si_excess

Si excess

Si excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG55.JPG






Smut

Smut

Two kinds of smut, loose smut Sphacelotheca cruenta on the left, a healthy head in the middle and covered kernel smut Sporisorium sorghi on the right. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG01.JPG






Sooty_stripe,_(Ramulisporia_sorghi)

Sooty stripe, (Ramulisporia sorghi)

Sooty stripe, Ramulisporia sorghi. Before sporulation, note the elliptical shape and the yellow margin. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG32.JPG






Sooty_stripe,_(Ramulisporia_sorghi)

Sooty stripe, (Ramulisporia sorghi)

Sooty stripe, Ramulisporia sorghi. Heavy sporulation in the center of the lesion giving the disease its name. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG33.JPG






Sooty_stripe,_(Ramulisporia_sorghi)

Sooty stripe, (Ramulisporia_sorghi)

Sooty stripe, Ramulisporia sorghi. Heavy infection. This is a disease of increasing importance because no till cultivation does not bury infected tissue.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG34.JPG






Sorghum_bicolor

Sorghum bicolor: A full head of sorghum seed. (Beijing Botanical Garden)

tn_sorf1.jpg






Sorghum_bicolor

Sorghum bicolor: Individual sorghum seeds. (Beijing Botanical Garden)

tn_sorf2.jpg






Sorghum_bicolor

Sorghum bicolor: Stem sections from one plant of sweet sorghum. (Beijing Botanical Garden)

tn_sorf3.jpg






Sorghum_downy_mildew_(Sclerospora_sorghi)

Sorghum downy mildew (Sclerospora sorghi)

Sorghum downy mildew Sclerospora sorghi, may be either a systemic or local infection. Complex life cycle. Leaves with systemically infected stripes of different ages.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG26.JPG






Sorghum_downy_mildew_(Sclerospora_sorghi)

Sorghum downy mildew (Sclerospora sorghi)

Sorghum downy mildew Sclerospora sorghi, may be either a systemic or local infection. Complex life cyclemicroscopic view of stained resting spores, oospores, within the older brown stripes. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG27.JPG






Sorghum_downy_mildew_(Sclerospora_sorghi)

Sorghum downy mildew (Sclerospora sorghi)

Sorghum downy mildew Sclerospora sorghi, may be either a systemic or local infection. Complex life cycle systemically infected plant in the field showing how the leaves become shredded along the brown stripes releasing the oospores with overwinter. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG28.JPG






Sorghum_downy_mildew_(Sclerospora_sorghi)

Sorghum downy mildew (Sclerospora_sorghi)

Sorghum downy mildew Sclerospora sorghi, may be either a systemic or local infection. Complex life cycle conidial spores, see the downy appearance of lesions on the leaf on the right, are produced in the infected tissue and are airborne causing additional localized lesions on leaf in photo.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG29.JPG






Sorghum_downy_mildew_(Sclerospora_sorghi)

Sorghum downy mildew (Sclerospora sorghi)

Sorghum downy mildew Sclerospora sorghi, may be either a systemic or local infection. Complex life cycle plant infected with both sorghum downy mildew and head smut.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG30.JPG






Sorghum_downy_mildew_(Sclerospora_sorghi)

Sorghum downy mildew (Sclerospora sorghi)

Sorghum downy mildew Sclerospora sorghi, may be either a systemic or local infection. Complex life cycle plant infected with both sorghum downy mildew and head smut.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG31.JPG






Sorghum_midge_(Stenodiplosis_sorgicola)

Sorghum midge (Stenodiplosis sorgicola)

Sorghum midge Stenodiplosis sorgicola. The major threat to sorghum production in the south. The extent of damage to seed set by the midge. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG48.JPG






Sorghum_midge_(Stenodiplosis_sorgicola)

Sorghum midge (Stenodiplosis sorgicola)

Sorghum midge Stenodiplosis sorgicola. Diagnostic test for the midge is to squeeze a floret to press out the orange juice of the midge larvae.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG49.JPG






Sorghum_rust_(Puccinia_purpurea)

Sorghum rust (Puccinia purpurea)

Sorghum rust Puccinia purpurea. Showing the typical reddish brown urediniospores typical of rust. (Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG24.JPG






Sorghum_rust_(Puccinia_purpurea)

Sorghum rust (Puccinia purpurea)

Sorghum rust Puccinia purpurea. Showing the green island effect of older infections or late season.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG25.JPG






Sorghum_yellow_banding_virus

Sorghum yellow banding virus

Sorghum yellow banding virus thus far found in north and south Texas and California.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG35.JPG






Spores

Spores

A microscopic view of stained spores of a mycorrhizal fungus which is beneficial to sorghum by assisting roots in soil nutrient uptake.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG52.JPG






Sr_excess

Sr excess

Sr excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG31.JPG






Sulfer_deficiency

Sulfer deficiency

Sulfer deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG14.JPG






Sulfer_deficiency

Sulfer deficiency

Sulfer deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG18.JPG






Zinc_deficiency

Zinc deficiency

Zinc deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG67.JPG






Zinc_deficiency

Zinc deficiency

Zinc deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG71.JPG






Zinc_deficiency

Zinc deficiency

Zinc deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG75.JPG






Zinc_deficiency

Zinc deficiency

Zinc deficiency in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG79.JPG






Zinc_excess

Zinc excess

Zinc excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG43.JPG






Zinc_excess

Zinc excess

Zinc excess in sorghum (Ralph B. Clark, USDA-ARS)

tn_RCSORG60.JPG






Zonate_leaf_spot,_(Gloeocercospora_sorghi)

Zonate leaf spot, (Gloeocercospora sorghi)

Zonate leaf spot, Gloeocercospora sorghi. Some potyviruses like maize dwarf mosaic virus can produce similar symptoms on certain sorghum genotypes so beware.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG04.JPG






Zonate_leaf_spot,_(Gloeocercospora_sorghi)

Zonate leaf spot, (Gloeocercospora sorghi)

Zonate leaf spot, Gloeocercospora sorghi. Some potyviruses like maize dwarf mosaic virus can produce similar symptoms on certain sorghum genotypes so beware.(Stanley G. Jensen, USDA-ARS, University of Nebraska)

tn_SSORG05.JPG