Abstract:
The effect of twelve treatments viz. Bavistin 50 WP (T1), Cupravit 50 WP
(T2). Dithane M-45 (T3), Proud 250 EC (T4), Ridomil Gold (T5). Tilt 250
EC (T(l). Allamanda leaf extract (T7). Neem leaf extract (T8). Garlic extract
(T9), Ginger extract (TIO)~ Onion extract (T11) and Control (T12) were tested
against Colletotrichum capsici causing Anthracnose of chilli during winter
season (2006-2007) at the Farm of Sher-e-Bangla Agricultural University,
Dhaka. The highest seed germination (80%) was obtained from ginger
extract and neem extract treated seeds in laboratory condition while the
germination was 78.83o/o and 74.00%, respectively ginger and necm extract
in the field condition. The efficacy of the treatments varied significantly in
terms of disease incidence, disease severity and yield of chilli. Tilt 250 EC
(T6), Proud 250 EC {T4), Cupravit 50 WP (T2) and Allamanda extract (T9)
showed promising effect against the disease. Application of Tilt 250 EC
increased 195.90% fruit yield of chilli followed by Proud 250 EC
( 177.59%) and Bavistin 50 WP (159.56%) against anthracnose disease of
chilli. Cost benefit analysis showed that the application of Tilt 250 EC (T6)
resulted the highest BCR (4.07) followed by Proud 250 EC (3.68). Bavistin
50 WP (3.47), Allamanda leaf extract (3.16) and Dithane M- 45 (2.95 )
compared to control.
