Sher-e-Bangla Agricultural University

Thesis paper


POTENTIALITY OF PLANT EXTRACT IN CONTROLLING LEAF BLIGHT (Bipolaris sorokiniana) OF WHEAT
 
Category:SAU MS Thesis
N° Catalog: SAU200701_156
University: SAU
Department: Plant Pathology
Year: 2007
File: 1st part: sau200701_156.pdf
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ABSTRACT

Potentiality of plant extract in controlling leaf blight (Bipolaris sorokiniana)of
wheat was carried out during the period from june, 2006 to March, 2007 The
experiments were conducted in the Seed Health Laboratory, Department of Plant
Pathology and in the farm of the Sher-e-Bangla Agricultural University, Dhaka
Primarily 24 plant species were evaluated for their antifungal activity against B.
sorokinianaby an invitrotest Among them 13 species were found promising and
selected for field evaluation against leaf blight disease All the plant extracts
reduced the incidence of B. sorokinianaover untreated control The highest
reduction was found in case of treating seeds with turmeric rhizome extract
Among the botanicals, durba leaf extract performed the highest percent of healthy
seedlings It has been observed that allamanda leaf extract showed the highest
germination and highest vigor index in compare to control Among the botanicals
onion bulb extract treated seeds resulted lowest leaf blight seventy in compare to
untreated control Seed treatment with onion bulb extract also showed the best
result in producing higher number of spikelets/ear, number of grains/ear, weight of
grain/panicle and weight of straw/panicle m compared to untreated control The
treatment T2 (Onion bulb extract) and T11 (Allamanda leaf extract) resulted highest
grain yield (3.92 g/plot) over untreated control