Sher-e-Bangla Agricultural University

Thesis paper


VARIETAL SCREENING AND MANAGEMENT OF LEAF BLIGHT OF WHEAT CAUSED BY BIPOLARIS SOROKINLANA
 
N° Catalog: SAU200601_149
University: SAU
Department: Plant Pathology
Year: 2006
File: 1st part: sau200601_149.pdf
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ABSTRACT

 

Experiments were conducted at Bangladesh Agricultural Research Institute
(BARI) Joydebpur, Gazipur during 2004-2005 crop season. In field screening
of 14 germplasms under natural infection pressure of Bipolaris leaf blight 3
reached as resistant (Chirya-7, Shatabdi and BAW-966) and 1 reached as
moderately resistant (BAW -1006) to the disease. All the five fungicides
(Avistin-0.1%, Hayconazole- 0.05%, Nuben-0.2%, Sulphotox-0.2% and Tilt-
0.05%) tested against Bipolaris sorokiniana,showed better performance over
control. Among them Tilt appeared most effective and resulted against the PDI
value of 72% and increased 108% grain yield over control. While effective
dose of four fungicides namely folicur (0.05 and 0.10%), Hexaconazole (0.05
and 0.1%), Fujione (0.05 and 0.1%) and Akanazole (0.05 and 0.1%) were
evaluated against Bipolaris leaf blight it was found that F2D2Exhibited most
effective one in reducing the disease and increasing higher yield and it showed
statistically similar to F1D1(Folicur, 0.05%) F1D2(Folicur, 0.1%) and F2D1
(Hexaconazole (0.05%). In another study on determining avoidable loss of
wheat due to Bipolaris leaf blight indicated avoidable loss of 27.05 and 14.20%
were due to the disease respectively, in Kanchon (Susceptible) and Shatabdi
(Moderately resistant) varieties.