Abstract:
An experiment was conducted in the field laboratory of Sher-e Bangla Agricultural University, Dhaka,
Bangladesh during the period from April 2006 to December 2006. Data on disease incidence and
disease severity was recorded at 90, 105, 120, 135, 150 and 165 Days After Sowing (DAS) DAS with
15 days intervals and analyzed. The highest performances were observed in case of application of
Trichoderma harzianum, garlic extract and neem extract in all recording days in controlling the
disease. At 90 DAS, the lowest disease incidence (hill infected) recorded at 90, 105, 120, 135, 150 and
165 DAS respectively were 6.67 %, 33.33%, 33.33%, 20.00%, 13.33% and 13.33% in case of
Trichoderma harzianum where it was 66.67%, 93.33, 100 %, 100%, 100% and 100%, respectively in
control. Similarly the lowest disease severity (0.20, 0.80, 0.28, 0.05, 0.04 and 0.04) was recorded at 90,
105, 120, 135, 150 and 165 DAS in case of Trichoderma harzianum where it was 6.82, 20.51, 18.39,
21.97, 30.12 and 28.65, respectively in control. The promising performances were also observed in
case of garlic extract and neem extract. The highest yield was recorded in case of Trichoderma
harzianum (11.67 t /h) followed by garlic extract (6.33 t/h) and neem extract (6.11 t/h). The lowest
yield was recorded in control (2.78 t/h) preceded by Folicur (3.65 t/h).
Description:
A thesis
Submitted to the Department of Plant Pathology
Sher-e-Bangla Agricultural University, Dhaka,
in partial fulfillment of the requirements
For the degree of
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY
SEMESTER: JULY-DECEMBER, 2006
