Rice:Photos

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Rice Pest and Nutritional Disorder Photos





Contents

Akiochi

Akiochi

Early stage of Akiochi (Autumn decline in Japanese) Disease of water-seeded rice in California. Exact cause not known but H2S toxicity probable cause. Initial symptom consist of yellowing followed by rapid firing (Necrosis) of upper leaves. Plants turn necrotic and die in advance stages, with a rotten egg scent (H2S) evolved from the soil before drainage.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Akiochi_Disease

Akiochi Disease

Darker brown area of field is advanced stage of Akiochi Disease or H2S toxicity in water-seeded rice in California. The dark brown color of upper leaves at maturity is characteristic of this problem.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Bacterial_blight

Bacterial blight (Don Groth, Rice Research Station, Rayne, Louisiana)

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Bacterial_blight

Bacterial blight (Don Groth, Rice Research Station, Rayne, Louisiana)

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Bacterial_leaf_streak

Bacterial leaf streak

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Bacterial_streak

Bacterial streak (Don Groth, Rice Research Station, Rayne, Louisiana)

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Brown_bord

Brown bord (Don Groth, Rice Research Station, Rayne, Louisiana)

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Brown_spot

Brown spot caused by Helminthosporium oryzad Breda de Haan

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Brown_spot

Brown spot caused by Helminthosporium oryzad Breda de Haan

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Brown_spot

Brown spot (Don Groth, Rice Research Station, Rayne, Louisiana)

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Close-up_of_K_deficiency

Close-up of K deficiency

Close-up of K deficiency symptoms in rice grown in greenhouse pot studies. (D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Collar_blast

Collar blast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Corcyra_cephalonica,_adult

Corcyra cephalonica, adult

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Crown_rot

Crown rot (Don Groth, Rice Research Station, Rayne, Louisiana)

[crownrot.jpg [tn_crownrot.jpg





Crown_sheath_blight

Crown sheath blight (Don Groth, Rice Research Station, Rayne, Louisiana)

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Crown_sheath_rot

Crown sheath rot (Don Groth, Rice Research Station, Rayne, Louisiana)

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Downy_mildew

Downy mildew (Don Groth, Rice Research Station, Rayne, Louisiana)

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Falsesmut

Falsesmut (Don Groth, Rice Research Station, Rayne, Louisiana)

[falses~1.jpg [tn_falses~1.jpg





Hydrogen_sulfide_toxicity

Hydrogen sulfide toxicity

Close-up of Hydrogen sulfide toxicity symptoms showing characteristic leaf necrosis (firing) of upper leaves with normal green leaves on right side of picture.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Kernalsmut

Kernalsmut (Don Groth, Rice Research Station, Rayne, Louisiana)

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Leaf_blast

Leaf blast Pyricularia oryzae Cav.

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Leaf_blast

Leaf blast Pyricularia oryzae Cav.

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Leaf_folder

Leaf folder

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Leaf_scald

Leaf scald

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Leafblast

Leafblast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Leafblast_2

Leafblast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Leafscald

Leafscald (Don Groth, Rice Research Station, Rayne, Louisiana)

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Leafscald_2

Leafscald (Don Groth, Rice Research Station, Rayne, Louisiana)

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Leafscald_3

Leafscald (Don Groth, Rice Research Station, Rayne, Louisiana)

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Leafsmut

Leafsmut (Don Groth, Rice Research Station, Rayne, Louisiana)

[leafsmut.jpg [tn_leafsmut.jpg





Maggots

Seeding maggots

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Mold_cricket

Mold cricket

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Molinate_phytotoxicity_symptoms

Molinate phytotoxicity symptoms

Molinate phytotoxicity symptoms on water-seeded rice in California shown on right side of slide and normal (unaffected rice) on left side of slide. Molinate applied early in season when rice was in third leaf stage. Symptoms consist of dying of older leaves and dark green, brittle, and deformed growth from crown of plant. Affected plants in the early tillering stage show an open center with main stem missing and profuse titlering. Affected areas take on a a lighter green color. (D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Molinate_phytotoxicity_symptoms

Molinate phytotoxicity symptoms

Molinate phytotoxicity symptoms on Mars rice variety in Louisiana when molinate applied at late tillering to internode elongation stage. Symptoms consist of panicle failing to clear the flag leaf sheath with the sheath tightly wrapped around the deformed panicle. (D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Narrowbrown

Narrowbrown (Don Groth, Rice Research Station, Rayne, Louisiana)

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Neckblast

Neckblast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Nitrogen_deficiency

Nitrogen deficiency

Nitrogen deficiency symptoms in -N treatment with adequate N adjacent. N deficiency symptoms in water-seeded California rice consist of light green to yellow color with reduced height, tillering, and biomass accumulation. (D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Nitrogen_deficiency

Nitrogen deficiency

Nitrogen deficiency symptoms in midtillering stage of rice in California.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Nitrogen_deficiency

Nitrogen deficiency

Nitrogen deficiency and adequate N in water-seeded Louisiana rice. Symptoms are vivid yellowing of leaves followed by chlorosis of older leaves. Plant height, tillering, and biomass reduced but not as great as in California.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Nodeblast

Nodeblast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Nodeblast_2

Nodeblast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Pale_yellow_mottle

Pale yellow mottle

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Panicle_blight

Panicle blight (Don Groth, Rice Research Station, Rayne, Louisiana)

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Panicleblast

Panicleblast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Peckyrice

Peckyrice (Don Groth, Rice Research Station, Rayne, Louisiana)

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Phosphorus_deficiency

Phosphorus deficiency

Phosphorus deficiency and response to topdressed P at rates of 30, 90, and 120 lb P2Os/acre at early tillering stage of water-seeded rice in California. P deficiency symptoms consist of chlorosis of older leaves with newer leaves a bluish, gray-green color. Chlorotic older leaves rapidly become necrotic and plant tillering is reduced greatly with only moderate reduction in height.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Phosphorus_deficiency

Phosphorus deficiency

Phosphorus deficiency in early stage. Notice necrotic older leaves and gray-green single new leaves erect out of the water.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Phosphorus_deficiency

Phosphorus deficiency

Phosphorus deficiency in greenhouse pot studies showing necrotic older leaves and reduced tillering.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Potassium_deficiency

Potassium deficiency

Potassium deficiency in small plot and main plot basin with adequate K (80 lb K20/acre) next to -K small plot. K deficiency symptoms consist of a reddish brown color of the upper leaves caused by small rusty brown spots on the leaf tips and down the leaves as shown in the -K treatment and main plot basin. Plant height is reduced and maturation accelerated slightly when K is deficient. Symptoms develop in late boot to heading stage.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Pyricularia_oryzae:_Resistant

Pyricularia oryzae: Resistant seedlings and susceptible seedlings. Rice Diseases and Pest of Thailand by Rice Department, Ministry of Agriculture of Thailand in collaboration with UNDP and FAO, 1971

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Rice

Rice

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Rice:_caryopsis

Rice: caryopsis

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Rice:_culm,_leaf,_tiller

Rice: culm, leaf, tiller and roots.

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Rice:_germinating_seed

Rice: germinating seed and different categories of roots.

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Rice_Blast_Disease

Rice Blast Disease

Rice Blast Disease caused by Pyricularia grisea on highly susceptible California rice variety S-201 in Louisiana. Resistant variety shown on left. Early leaf symptoms consist of a characteristic diamond shaped lesion with a gray or white center and a brown or reddish brown border. Newly formed lesions have a white or gray-green center and a darker green border. Shape, color, and size of lesions vary depending on varietal resistance, plant age, and lesion age. Typical brown "collar rot", and "neck rot" or "rotten neck blast" in the neck node also are typical symptoms of this disease. Highly susceptible rice varieties may have their leaves become necrotic and the plants die in the mid to late tillering stages.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Rice_bug

Rice bug

There are several species of rice bug, differing in size and color. The one shown is very common; the others are wider and shorter

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Rice_grasshopper_adult

Rice grasshopper adult, Hieroglyphus banian

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Rice_particles_(Var._Mars)

Rice particles (Var. Mars)

Close-up of rice particles (Var. Mars) from Straighthead area of field and normal panicle. Parrot beak shape of florets in Straighthead panicle and very high sterility are characteristics of this disorder, with plants remaining green because of no sink (grain) for photosynthate.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Rice_weevil

Rice weevil.

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Root_knot_nematode

Root knot nematode (Don Groth, Rice Research Station, Rayne, Louisiana)

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Rottenneck_blast

Rottenneck blast (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sb_head

Sb head (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sb_leaf

Sb leaf (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sb_lesion

Sb lesion (Don Groth, Rice Research Station, Rayne, Louisiana)

[sblesion.jpg [tn_sblesion.jpg





Sb_on_head

Sb on head (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sb_primary_lesions

Sb primary lesions (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sb_stem

Sb stem (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sb_webbing

Sb webbing (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sheath_blight

Sheath blight disease of rice

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Sheath_blight

Sheath blight (Don Groth, Rice Research Station, Rayne, Louisiana)

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Sheath_Blight_Disease

Sheath Blight Disease

Close-up of Sheath Blight Disease symptoms on rice in Louisiana.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Sheath_Blight_Disease

Sheath Blight Disease

Sheath Blight Disease on Lemont rice variety in Louisiana caused by Rhizoctonia solani. Initial symptoms consist of large oval spots on leaf sheaths and oval to rectangular spots on leaves. Infection usually begins in late tillering to internode elongation stage and lesions have grayish white or light green centers with reddish-brown margins. Infection begins slightly above the water line on the plant and spreads up the plant as the plant matures. Infection occurs rapidly up to the flag leaves, after heading and areas of the field where infected areas coalesce with other infected areas may cause large areas of lodged, dead, and dying plants.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Sheath_rot

Sheath rot (Don Groth, Rice Research Station, Rayne, Louisiana)

[sheath~2.jpg [tn_sheath~2.jpg





Sheath_spot

Sheath spot (Don Groth, Rice Research Station, Rayne, Louisiana)

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Stackburn

Stackburn (Don Groth, Rice Research Station, Rayne, Louisiana)

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Stackburn_2

Stackburn (Don Groth, Rice Research Station, Rayne, Louisiana)

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Stalk-eyed_fly

Stalk-eyed fly, Diopsis sp. Larvae cause serious stem borer damage in West Africa

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Stem_rot

Stem rot (Don Groth, Rice Research Station, Rayne, Louisiana)

[stemrot.jpg [tn_stemrot.jpg





Stinkbug

Stinkbug damage (Don Groth, Rice Research Station, Rayne, Louisiana)

[stinkbug.jpg [tn_stinkbug.jpg





Straighthead

Straighthead (Don Groth, Rice Research Station, Rayne, Louisiana)

[straigh~1.jpg [tn_straigh~1.jpg





Straighthead_Diseases

Straighthead Diseases

Straighthead Diseases of Rice in Louisiana (Var. Mars) caused by arsenic, H2S, and unknown causes. It is referred to as a Physiological Disorder and occurs frequently in the Southern U.S. on lighter textured soils but not usually on heavy clay soils. This slide shows field symptoms that consist of sterile, parrot beak-shaped florets and darker green plants at maturity. The lighter colored golden rice in the wheel marks is the only rice that set seed and appears normal.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Sulfonylurea_(Oust-r)_phytotoxicity

Sulfonylurea (Oust(r)) phytotoxicity

Sulfonylurea (Oust(r)) phytotoxicity to rice is seedling stage in Louisiana. Phytotoxicity symptoms consists initially of clorosis of leaves followed by rapid necrosis of older leaves and necrotic spots on all leaves. Many plants die with some surviving that are characterized by emergence of abnormal leaves and stem from the crown of the plant.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Sulfonylurea_Phytotoxicity_Symptoms

Sulfonylurea Phytotoxicity Symptoms

Sulfonylurea Phytotoxicity Symptoms in rice in Louisiana. Symptoms in advanced stage consist of necrotic leaves and stems of plants (dead) severely effected, with new emergence of leaves and stem from crown of plants less severely effected. New growth is twisted and abnormal with less vigor and height of plant.(D. Marlin Brandon, California Rice Experiment Station, Biggs, CA)

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Watermold

Watermold (Don Groth, Rice Research Station, Rayne, Louisiana)

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Whitetip

Whitetip (Don Groth, Rice Research Station, Rayne, Louisiana)

[whitetip.jpg [tn_whitetip.jpg





Yellow_stem_borer

Yellow stem borer adult

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