Plant Pathology — Agri Master Mind
Which bacterial disease of citrus leads to the formation of raised lesions on fruits with a water-soaked appearance?
- Blight
- Canker
- Greening
- Dieback
- Gummosis
Citrus greening disease is mainly confined to
- North India
- South India
- East India
- West India
- South east india
Which of the following is the causal organism of citrus export disease
- Bacteria
- Virus
- Viroid
- Fungi
- Nematodes
Ascochyta blight is the seed-borne disease of which crop
- Gram
- Barley
- Soyabean
- Sorghum
- Rapeseed and mustard
The covered smut of Barley is externally seed borne Hance easy to control. So tell me the loose smut of wheat is
- Air born
- Soil born
- Externally seed born
- Internally seed born
- Both C & D
Jackpot question? Choose the incorrect related to Karnal bunt disease
- Occurs at the flowering stage
- Reported by Mitra 1931
- Killer disease of wheat
- Disease is seed, soil & air born
- None of these
Red rust of tea is caused by
- Virus
- Bacteria
- Nematode
- Algae
- None of these
The disease appears on young leaves, stems, inflorescence, and fruit. Often, black necrotic areas develop on the twigs from tip to downward causing dieback. The infected flower parts ultimately shed resulting in partial or complete deblossoming.
- Sooty mold of mango
- Powdery mildew of mango
- Malformation of mango
- Anthracnose of mango
- Downey mildew of mango
Gray speaks of oats and marsh spot of peas due to the deficiency of
- B
- Mo
- Zn
- Mn
- Mg
Mango is the king of fruit. Mango malformation is a disease of mango which is controlled by NAA. Mango malformation is due to?
- Fungus
- Low temperature
- Improper pollination
- Both A and B
- All of these
Root-knot nematodes cause characteristic galls on roots. Galls may be up to 1 inch in diameter but are usually smaller. Which of the following varieties of tomato is resistant to nematode
- Pusa – 120
- SL – 120
- Hisar Anmol
- Both A & B
- All of these
First plant parasitic nematode (Ear cockle of wheat) was reported by_____
- N. A. Cobb
- T. Needham
- E. J. Butler
- C. H. Persoon
- Both a and b
Urfa disease in Rice is due to
- Deficiency of Nitrogen
- Deficiency of Zinc
- Attack of Bacteria
- Attack of Nematode
- Attack of Fungus
Soft & water soaked in fruit, blight on foliage, and fruit root is symptoms of Phomopsis blight of Brinjal. Fruit rot of Brinjal is caused by_________
- Phytophthora Sp.
- Phytoplasma
- Phomopsis vexans
- Phytophthora palmivora
- None of these
Infection in the leaves is visible along the midribs as dark–reddish zones tend to elongate turning blood red enclosed by dark margins, redden pith, and alcoholic smell from the field, in which disease
- Red strips disease of sugarcane
- Ripe rot of capsicum
- Red rot of sugarcane
- Charcoal rot
- Both A and B
The disease of rose greyish-white powdery patches is seen on the tender leaves and flower buds, mature leaves get malformed and flower buds fail to open and the plant presents a wilted appearance.
- Downey mildew
- Powdery mildew
- White rust
- Black rust
- Brown rust
Papaya mosaic virus transmitted by…….
- Whitefly
- Leafhopper
- Aphid
- All of the above
- Both a and b
Which of the following is the vector for the yellow vein mosaic of Okra?
- White fly
- Green plant hopper
- Aphids
- Jassids
- All of these
Which of the following is a vector for sterility mosaic of Red gram….
- Aphid
- Erophyid mite
- Whitefly
- Thrips
- Both a and c
Bud necrosis in groundnuts is transmitted by?
- Aphid
- Thrips
- Whitefly
- GLH
- Mite
Whitefly is the primary vector to transmit leaf curl disease. Which of the following is the first viral disease…..?
- Leaf curl of Papaya
- Leaf curl of Chilli
- Leaf curl of Cotton
- Leaf curl of Tomato
- Leaf curl of Tobacco
shepherd crook” symptoms are related to….
- Fire blight of Apple
- Fire blight of Pear
- Anthracnose of Mango
- Anthracnose of Cotton
- A & B
Angular leaf spot of cotton is caused by
- Fusarium monilliforme
- Earias insulin
- Xanthomonas malvecerum
- Cercospora personata
- None of these
Which of the given is an example of Fungal disease in plants?
- Bud blight
- Powdery Mildew
- Chlorosis
- Curly top
- Necrosis
Yellow and irregular spots on the upper surface and white growth on the under surface of leaves malformed inflorescence-
- Bacterial blight/black root
- Club root
- Downy mildew
- White rust
- None of them
Who discovered the first bacterial disease fire blight of Pear?
- Brefeld
- T J Burril
- Anton de berry
- Prevost
- None of these
Millardet discovered the Bordeaux mixture for the control of downy mildew of grapes in ________
- 1880
- 1807
- 1887
- 1885
- 1902
Crystallization of virus particles (TMV) first obtained by:
- Christian Hales
- Christian Gram
- W.M. Stanley
- Alexander-Fleming
- P.M.A Millardate
The devastating impact of plant disease on human suffering and survival was first realized by epidemic of________
- Brown spot of Rice in Bengal
- Late blight of Potato in USA
- Late blight of Potato in Europe
- Rust of wheat in India
- None of these
Bordeaux mixture (CuSo4:lime:wheat) ratio -
- 8:8:80
- 6:5:40
- 4:4:50
- 3:3:80
- Both a and c
The causal organism of early leaf spot of groundnut
- Cercospora personatum
- Cercospora archidicola
- Puccinia arachidis
- Both A and B
- None of these
The rice tungro disease is caused by two viruses, RNA virus & DNA virus. So tell me the vector of rosette virus of groundnut
- Nilaparvata lugens
- Nephotettix virescence
- Aphis craccivora
- Frankliniella scultzei
- Bemisia tabaci
Burnt-like appearance on leave is symptoms of late blight & early blight of tomato. Late blight & early blight is a ______
- Viral disease
- Bacterial disease
- Fungal disease
- Seed borne disease
- None of these
The “Target Board” effect is related to
- Early blight of Potato
- Late blight of Potato
- Septoria leaf of Potato
- Leaf curl disease
- Marsh spot
Phyllody disease of sesame transmitted by
- Trips
- Whitefly
- Leaf hoppers
- None of these
- Aphid
A viral disease with circular leaf spots that range in color from light brown to black, it is most severe during cool weather when heavy dews are present, Identify the disease. (IBPS AFP 2022)
- Necrosis
- Mottling
- Ring spot
- Blight
- Wilt
Choose the wrong option (Rice blast)-
- Diamond/Boad shaped spot
- Neck blast & Seed blanking
- Rice men’s disease
- Seed borne
- Payricularia oryzea (Asexual stage)
Akoichi disease is due to toxicity of?
- HCL
- H2SO4
- H2S
- None of these
- Hno3
Viral disease of capsicum downward cupping curling of leaf disease was transmitted by which insect.
- Green leaf hopper
- Whitefly
- Aphids
- Toxoptera citricida
- Both B and C
Infection in the leaves is visible along the midribs as dark–reddish zones having a tendency to elongate turning blood red enclosed by a dark margin, redden piths, and alcoholic smell from field, in which diseases
- Red strips disease of sugarcane
- Ripe root of capsicum
- Red root of sugarcane
- Charcoal root
- Both A and B
Pink discoloration from the vascular bundles at growing points, a symptom related to which crop disease is
- Sorghum
- Cumin
- Pearl millet
- Sugarcane
- None of these
Honey-liked pinkish liquid secretion is related to -
- Red rot of sugarcane
- argot disease
- Citrus gamosis
- Apple scab
- Blight disease of mango
In potatoes, transport of planting material from Nilgiri hills (TN) to other parts of the country is restricted to protect from disease, what is the causal organism of this disease
- Rhizoctonia solani
- Alternaria solani
- Synchytrium endobiotcum
- Phytophthora infestans
- Globodera rostochinensis
Which of the following is most serious storage disease of Potato
- Late blight
- Charcoal rot
- Black scurf
- Golden nematode
- Scab
GA3 was first discovered in 1926 when Kurosawa was studying extracts from rice plants infected by the?
- Tungro disease of Rice
- Brown leaf spot of Rice
- Bakanae disease of Rice
- Khaira disease of Rice
- False smut disease of Rice
Choose the correct answer-
- Blast – Rice men’s disease
- Bacterial leaf blight – poor men’s disease
- Bacterial leaf blight- killer disease of Rice
- Rice tungro – a killer disease of Rice
- Both A and B
Aphid:- pentatonic nigronervosa is a vector for which of the following viral disease
- Banana bunchy top
- Cumin Kattee/Foorky
- Okra yellow vein mosaic
- Both A & B
- None of these
Rusts are three types, caused by different species of Puccinia. Choose the correct related to stem rust of wheat
- Early appearance of disease
- More damage than other rust
- Puccinia graminis tritici
- Most damaging in India
- All of these
The appearance of a Black whip like structure at the apex of the stalk it is also known as “whip smut” but an infested stalk gives Alcoholic smell from the field is found in
- Xanthomonas rubrilineans
- Clavibacter xyli
- Xanthomonas axonopodis
- Colletotrichum falcatum
- None of these
Which of the following materials, part of the maximum plant virus
- SS RNA
- DS RNA
- SS DNA
- DS DNA
- Both A and C
Anshul visited a field of rice and he saw an infected plant whose symptoms are rotten black powder gived a foul smell. So tell me three rusts are found in wheat. So tell me who gave the Paccinia Path?
- Anton De berry
- KC Mehta
- S Nagarjan
- Kc reddy
- Dr. Purthi
KHAIRA disease of rice which is caused by Zn deficiency to manage this disease ZnSo4 use should be done how much DAS?
- 4 DAS
- 10 DAS
- 14 DAS
- 16 DAS
- 20 DAS
Indication of which disease those all plant parts affect except root, seed, and soil-borne disease
- Fusarium wilt
- Brgot
- Charcoal rot
- Seedlings blight
- Ascochyta blight
Covered smut of barley is caused by ustilago hordes. Covered smut is________?
- Externally seed-borne disease
- Internally seed-borne disease
- Air borne disease
- Soil-borne disease
- None of these
Annual losses by disease (worldwide)
- 16%
- 15%
- 14%
- 25%
- 45%
Yellow sticky traps are used to control-
- Thrips
- Whitefly
- Beetle
- Hopper
- C & D both
When the disease is prevented throughout the country continent or world is known as
- Epidemic
- Endemic
- Sporadic
- Pandemic
- Wheat rust
First appears on the ears in the form of honey-like pinkish liquid and later in pinkish liquid appears as brown to black sclerotia-like symptoms in pear millet caused by
- Claviceps fusiformis
- Sclerospora graminicola
- Tolyposporium pedicellariae
- Peronosclerosphora sorghi
- All of these
As you all know about corona which leads to covid pandemic. Due to which lockdown occurs which leads to economic disaster, so tell me which of the following disease is known as “Covid of Banana”
- BABU virus
- Cabbage top virus
- Panama wilt
- Sigatoka
- Both A and B
Yellow Sigatoka was first observed in Java, it has severe losses in Banana in many countries. The name black Sigatoka was given to the disease because it was first discovered in 1963 in the Sigatoka Valley of Fiji. So tell me most dangerous Sigatoka is-
- Black Sigatoka
- Orange Sigatoka
- Yellow Sigatoka
- Red Sigatoka
- All of these