Abstract:
The study was conducted to evaluate selected botanicals and BAU- biofungicide against
Cercospora leaf spot of lettuce in the Central Farm of Sher-e-Bangla Agricultural
University, Dhaka, Bangladesh during October, 2019 to February, 2020. Seven botanicals
namely Allamanda leaf extract (1:3 w/v), Garlic clove extract (1:3 w/v),
Neem leaf extract
(1:3 w/v), Onion bulb extract (1:3 w/v), Lantana leaf extract (1:3 w/v), Turmeric rhizome
extract (1:3 w/v), Mint leaf extract (1:3 w/v) and BAU- biofungicide (1ml/L) were applied
including a control. At different days after transplanting (DAT), BAU- biofungicide and
all botanicals significantly showed the minimum disease severity (1.17%), minimum plant
disease incidence (15%) with increased yield (47.82%) of lettuce. However, the highest
disease reduction with maximum yield and yield components were recorded in BAU-
biofungicide applied plot followed by Neem leaf extract and Allamanda leaf extract. The
BAU- biofungicide most effective against Cercospora leaf spot of lettuce compare to other
treatment used in this experiment.
Description:
A Thesis
Submitted to the Faculty of Agriculture,
Sher-e-Bangla Agricultural University, Dhaka
In Partial fulfillment of the requirements
for the degree of
MASTER OF SCIENCE (MS)
IN
PLANT PATHOLOGY
