Stag Head" is associated with:
Covered smut of barley
White rust of mustard
Club root of mustard
Karnal bunt of wheat
Early blight of tomato is caused by --
Alternaria brassicae
Alternaria tenuis
Alternaria solani
Alternaria raphani
The antheridia of Phytophthora infestance are-
Paragynous type
Amphigynous type
Both types
None of the above
Autoecious rust is:
Black rust of wheat
Brown rust of wheat
White rust of mustard
Linseed rust
Which of the following disease of wheat was first reported in India by Mitra (1931)........?
Flag smut
Loose smut
Karnal bunt
Hill bunt
Select a non-systemic fungicide:
Ridomil MZ-72
Bavistin
Dithane M-45
Vitavax
Wheat rust, which is highly susceptible to higher temperature is:
Black rust
Yellow rust
Brown rust
None of the above
Ustilago scitaminea is a causal agent of -
Flag smut of wheat
Loose smut of wheat
Whip smut of sugarcane
Covered smut of barley
Favorable temperature for maximum germination of sporangia of Albugo candida is-
20-24°C
12-14°C
30°C
4-8°C
Potato leaf roll virus is transmitted by -
Leaf hopper
Myzus persicae
Mites
Bemisia tabaci
Both fungal and bacterial diseases can be controlled effectively by -
Mancozeb
Copper oxychloride
Tetracycline
Agrimycin
Brown spot of maize is caused by-
Helminthosporium maydis
Peronosclerospora spp
Physoderma zeae-maydis
Cephalosporium spp
Carbendazim and vitavax are effective in controlling -
Rusts
Downy mildew
Smuts
Virus diseases
Powdery mildew is not effectively controlled by following fungicide-
Sulphur dust
Ridomil-MZ
Karathane
Calixin
Total or holo stem parasite is -
Striga
Loranthus
Orobanche
Cuscuta
Smut of Bajra is caused by -
Tolyposporium penicillariae
Sclerospora graminicola
Tolyposporium ehrenbergii
Sphacelotheca reiliana
Head smut of sorghum is caused by -
Sphacelotheca reiliana
Tolyposporium ehrenbergii
Sphacelotheca sorghi
Sphacelotheca cruenta
Yellow vein mosaic of okra is transmitted by-
Mechanical method
Insect
Nematode
Mite
For best fructification, which edible mushroom prefer "paddy straw" as a food material....?
Agaricus spp
Pleurotus spp.
Volvariella spp
Polyporus spp
Khaira disease of rice is caused by the deficiency of -
Iron
Boron
Zinc
Potash
Green ear disease of Bajra is primarily --
Seed borne
Air borne
Soil borne
None of these
Species of striga are -
Partial root parasite
complete root parasite
Complete stem parasite
Partial stem parasite
The pathogen of green ear disease of bajra is perpetuate or survive mainly through-
Soil
Seed
Soil and seed
Weed
Grain smut of sorghum is caused by -
Puccinia graminis
Sphacealotheca sorghi
Sphacealotheca cruenta
Tolysporiumehrenbergii
Highly poisonous mushroom is-
Aguricus bisporus
Amanitamus cueria
Calocybe indica
Trichoderma species
Electron microscope has a maximum useful magnification in the range of-
100-1000X
1000-2000X
200000-400000X
More than 1000000X
Azospirillum contributes to plant growth as-
N ₂ fixation
Organic matter recycling
Soil stricter
Bulk density
Growth of organism can be measured as -
Increased cell mass
Increased cell number
Increased cell mass and cell number
None of the above
Nostoc is an example of -
Algae
Fungi
Bacteria
Virus
Albugo candida is-
Obligate parasite
Faculative parasite
Saprophyte
Facultative saprophyte
Diseases which occur at very irregular intervals and location, and in relatively few instances, are called -
Epidemic
Pandemic
Sporadic
Endemic
Asexually produced spores, bearing flagella are called -
Zygospore
Zoospore
Zoosporangium
Conidium
Plant disease which is poisonous to human and animals is
Ergot of Bajra
Karnal bunt of Wheat
Smut of Sorghum
Late blight of Potato
Name the father of Plant Pathology in India -
E.J. Butler
Mundker
K.
J.F. Dastur
Fungi do not have-
Chromosome
Chlorophyll
Chloroplast
Mitochondria
True fungi belongs to kingdom
Chromista
Fungi
Plantae
Protista
A fruiting structure consisting of cluster of conidiophores woven together on a mass of hyphe is called-
Stroma
Sporodochium
Basidium
Ascocarp
Fungicide used for the control of Powdry mildew is -
Mancozeb
Apron
Sulphur
Thiram
Fungus used as bio-control agent, for soil borne diseases is-
Trichoderma
Trichothecium
Sclerotium
Alternaria
Phytoplasma is susceptible to -
Tetracycline
Penicillin
P.
Propiconazole
The author of book 'Plant Diseases" is-
Y.L. Nene
R.S. Singh
P.N. Thapliyal
G.N. Agros
Which group of following fungicide is now banned --
Sulphur fungicides
Copper fungicides
Mercury fungicides
Benzimidazole
Toxic ingredient for fungi in Blitox-50 is -
Copper oxychloride
Copper sulphate
Copper carbonate
Cuprous oxide
Deep ploughing in summer is done to manage-
Soil borne pathogen
Seed borne pathogen
Virus diseases
None of the above
The quantity of Antibiotic and water required to prepare 100 ppm solution is-
100 mg and 1litre
100 mg and 100 ml
1 mg and 1 litre
10 mg and 1 litre
The best method to control soil borne diseases is use of......
Foliar spray
Sulphur fungicide
Disease free seed
Systemic fungicide
Fungicide used to control downy mildew diseases is-
Carbedazim
Vitavax
Metalaxyl
Captan
The famous Irish famine of 1845-46 was largely due to failure of
Potato crop
Tomato crop
Grape crop
banana crop
At what stage of plant growth, the symptoms of loose smut of wheat apper?
Maturity stage
Seedling stage
Ear emergence stage
Tillering stage
Covered smut of barley is a/an -
Air-bone disease
Soil-borne disease
Internally seed-borne disease
Externally seed-borne disease