Abstract:
The experiment was conducted to evaluate the efficacy of different chemicals
and bio-agent for the management of bacterial wilt disease of brinjal caused by
Ralstonia solanacearum during the period of 2019-2020. Seven treatments viz.
T
0
= R. solanacearum (control), T
1
= R. Solanacearum + Goldton 50WP @
0.2%, T
2
= R. Solanacearum + Tricost 1%WP @ 0.3%, T
3
= R. Solanacearum +
Nirvoy 10SL @ 0.15%, T
4
= R. Solanacearum + Bactroban 20WP @ 0.2%, T
5
=
R. Solanacearum + Kasumin 2% liquid @ 0.05%, T
6
= R. Solanacearum +
krosin AG10SP @ 0.05% were used as soil drenching. All the transplanted
seedlings were inoculated with cell suspension of R.Solanacearum
(10
8
cfu/ml). The effect of the different treatments have shown significant
variation compared to control in respect of wilt incidence, yield and yield
contributing characters. The disease incidence differed significantly among the
treatments ranged from 13.9- 80.6%. Minimum disease incidence 13.9 % was
observed in treatment T
6
(Krosin AG10SP). However, the highest disease
incidence (80.6%) was observed in T
0
(Control). In case of all the plant growth
parameters, treatment T
6
i.e Krosin AG10SP (Streptomycin sulphate 9% +
Tetracyclin Hydrochloride 1 %) was found as the best one. The highest yield
27 kg/plot was recorded in case of treatment T
6
(krosin AG10SP) followed by
T
2
(Tricost 1%WP) 16.7 kg/plot. The lowest yield was noted in T
0
(control) 5.2
kg/plot. Among the treatments T
6
(Streptomycin Sulphate 9% + Tetracyclin
Hydrochloride 1%) was found to be effective for the management of bacterial
wilt of brinjal that increased yield by 410.9 % over control followed by T
2
(Tricost 1%WP) that increased yield by 216.2 %.
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
IN
PLANT PATHOLOGY
