Dry root rot of legumes and beans is caused by:
A.Erysiphe
B.Macrophomina
C.Xanthomonas
D.Phacidiopycnis
Category: Agriculture Plant Pathology Mcqs
Fungi which can grow only on living host plant are called:
A.Obligate saprophytes
B.Obligate parasites
C.Facultative parasites
D.Saprophytes
First plant parasitic nematode was reported by:
A.Needham
B.Spallanzani
C.Cobb
D.Mayer
Fusarium belong to order:
A.Melaconiales
B.Moniliales
C.Sporobolomycetales
D.Cryptococcales
A virus particle with both nucleic acid and protein coat is known as:
A.Virion
B.Viriod
C.Capsid
D.All above
Genus Radopholus of nematode was first described in 1893 on the basis of a male specimen obtained from necrotic roots of _____ growing in Fiji Islands.
A.Sugarbeet
B.Sugarcane
C.Banana
D.Coconut
Death of tissue in virus infected plant described as:
A.Mottling
B.Mosaic
C.Necrosis
D.Curling
Linseed rust is caused by:
A.Uromyces
B.Melampsora lini
C.Physaqmidium
D.Ravenelia
Mycoplasma disease of plant was first reported by:
A.Butler
B.Brefeld
C.Anton de Barry
D.Doi et al. and Ishire et al.
Bordeaux mixture was discovered by P.A. Millardet of France during the year 1882 following his chance observation of farmer’s practice for protection against:
A.Plasmopara viticola on grapevine
B.Uncinula nectar on grapevine
C.Podosphaera leucotricha on apple
D.Venturia inequalis on apple
