Fungal Diseases of Important Crops

The causative agent for wart disease of potato is Synchytrium endobioticum.

In barley, white to tan, small, semi-rectangular spots or blotches with a dark brown edge aligned along the veins of the leaf blade is known as Halo spot disease.
The causative fungus of the said disease is Pseudoseptoria stomaticola.

Elsinoe veneta causes anthacnose disease in raspberry.

Black stripe disease in sugarcane is caused by Cercospora atrofiliformis. Peronosclerospora sacchari fungus causes downy mildew disease in sugarcane.

A. Tropical cotton rust of cotton is caused by Phakopsora gossypii.
B. The causative fungal agent for stripe yellow rust of barley is Puccinia striiformis. Scald disease of barley is caused by the fungus Rhynchosporium secalis.
C. Cottony snow mold disease of wheat is caused by the fungus Coprinus psychromorbidus. Dwarf bunt of wheat is caused by Tilletia controversa.
Hence, statements B and C are false.

Stem rot of rice is caused by Magnaporthe salvini and Sclerotium oryzae.
False eye spot disease of wheat is caused by the fungus Gibellina cerealis.
Gray spot of tea is caused by Phyllosticta dusana.
The causing agent for target blotch in sugarcane is Helminthosporium sp.
Hence, the correct answer using the codes is P - 2, Q - 4, R - 3, S - 1.

Penicillium digitatum causes Green fruit mold in citrus. Mucor fruit rot is caused by Mucor sp.

P. The causative agents for Areolate leaf spot in citrus are- Thanatephorus cucumeris, Pellicularia filamentosa and Rhizoctonia solani. Dry fruit rot is caused by Nematospora coryli in citrus.
Q. Nectria canker disease is caused by Haematonectria haematococca fungus in African daisy plant. Powdery mildew is caused by the fungal pathogen Erysiphe cichoracearum in African daisy plant.
R. Bitter rot of peanut is caused by the fungal pathogen Glomerella cingulata.
Hence, P and Q are false statements.

Pepper leaf spot is caused by the fungus Leptosphaerulina briosiana in Alfalfa.

Blue mold rot of carrot is caused by the fungal pathogen Penicillium expansum.
The causative agent for fly speck in citrus is Schizothyrium pomi.
Phanerochaete salmonicolor causes pink leaf disease in coffee.
Charcoal rot of maize is caused by the fungus Macrophomina phaseolina.
Hence, the correct answer is P - 2, Q - 4, R - 3, S - 1.

Violet root rot is caused by Helicobasidium mompa.
Sooty blotch causing fungal pathogens are - Peltaster fructicola, Geastrumia polystigmatis, Leptodontidium elatius, Gloeodes pomigena.
Silver leaf disease is caused by Chondrostereum purpureum in apple.
Hence, B is the causative agent responsible for violet root rot in apple.

Narrow brown leaf spot of rice is caused by Cercospora oryzae and Sphaerulina oryzina.

Stem canker of cotton is caused by Phoma exigua fungus. Ramularia gossypii causes aereolate mildew disease of cotton.

Green fruit rot of almond is caused by Sclerotinia sclerotiorum.
The causative agent for twig blight of apricot is Monilinia sp. like- M. fructicola and M. laxa.
Clitocybe root rot of apple is caused by the fungus Armillaria tabescens.
Collar rot of cacao is caused by the fungus Ustulina deusta.
Hence, the correct sequence of codes is P - 5, Q - 1, R - 4, S - 2.

The causing fungal pathogens responsible for bird’s eye rot are Elsinoe ampelina and Sphaceloma ampelinum. Angular leaf spot of grapes is caused by the fungus Mycosphaerella angulata. Hence, the correct answer is Elsinoe ampelina and Sphaceloma ampelinum.

Tropical cotton rust is caused by the fungus Phakopsora gossypii.
The causative agent for powdery mildew in pea is Erysiphe pisi.
Wood rot of pear is caused by the fungus Trametes versicolor.
Helminthosporium solani causes silver scurf disease in potato.
Hence, the correct answer using the codes is P - 1, Q - 4, R - 2, S - 3.

Microsphaera diffusa causes powdery mildew disease in soybean.

Tracheomycosis is caused by the fungus Gibberella xylarioides in coffee.

P) Leaf streak disease is caused by the fungus Stenocarpella macrospora in maize.
Q) The causing fungal pathogen for stem rot of potato is Sclerotium rolfsii.
R) Athelia arachnoidea causes crater rot in carrot.
S) Grey rot or noble rot disease is caused by Botrytis cinerea in grapes. Mycosphaerella angulata and Cercospora brachypus cause angular leaf spot in grapes.
Hence, only statement S is false.

Side rot is caused by the fungus Phialophora malorum.

Leaf spots of cherries and palms are caused by Blueriella sp. The causative agent for ergot disease in Barley is Claviceps purpurea. Citrus greasy leaf spot is caused by the fungus Mycosphaerella citri. Banana leaf spot is caused by Mycosphaerella musicosa. Taphrina deformans causes leaf curl of peach and apricot.
Hence, the correct sequence is P - 3, Q - 1, R - 5, S - 2.

Gymnosporangium globosum causes American hawthorne rust in apple.

Cottony snow mold of wheat is caused by the fungus Coprinus psychromorbidus. White leaf spot of crucifer is caused by Pseudocercosporella capsellae. Hull rot disease of almond is mainly caused by Rhizopus sp. Southern blight of cotton is caused by the fungal pathogen Sclerotium rolfsii.
Hence, the sequence A - 2, B - 4, C - 3, D - 1 is correct.

P. Aerolate leaf spot in citrus is caused by Rhizoctonia solani. Altemaria altemata cause Albinism and Brown spot diseases in citrus.
Q. The causing agents for scab disease of pear are Venturia pirina and Fusicladium pyrorum.
R. Armillaria mellea causes shoestring root rot in grapes.
Hence, both statements Q and R are true.

Pseudopezicula tetraspora is a fungus and causes angular leaf scorch in grapes. The causing fungus for ring spot in sugarcane is Leptosphaeria sacchari. Collar canker of tea is caused by Phomopsis theae. Cotton root rot of crucifer is caused by the fungus Phymatotrichopsis omnivore.
Hence, the correct answer is P - 3, Q - 1, R - 4, S - 2.