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Tobacco (Nicotiana tabacum L.) is an important cash crop, belongs
to family Solanaceae.Bidi tobacco suffers from many disease caused
by a wide range of pathogens, viz., fungi, bacteria, viruses,
nematodes, flowering plant parasites and phytoplasmas. Pythium spp.
are essentially soil borne and possess a great problem in disease
management. Damping-off disease is difficult to control by small
component of action. Affected seedling collapse resulting in mass
mortality of seedlings in patches. It appears at any stage after
seeding in nursery. Complete failure of nursery may occur under
most conducive conditions.
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