Abstract:
The in vitro experiments were conducted in the Central Laboratory and net house of
the Department of Plant Pathology and the in vivo experiment was conducted in the
Central Farm of Sher-e-Bangla Agricultural University, Dhaka-1207 during
October’2017 to April’2018 to formulate the integrated approach for the management
of wilt complex of tomato. The causal pathogens of wilt complex of tomato were
isolated and identified as Fusarium oxysporum for fungal wilt, Ralstonia solanacearum
for bacterial wilt and Meloidogyne spp. for nemic wilt. In the in vitro evaluation, the
Autostin (Carbendazim) 50 WP and Krosin (Streptomycin sulphate) 10 SP showed
significant results in reducing the growth of Fusarium oxysporum (87.88%) and
Ralstonia solanacearum (83.33%), respectively. In field experiment, the selected
treatments were evaluated alone and in combination as T
1
= Autostin 50 WP, T
2
=
Furadan 5G, T
3
= Krosin 10 SP, T
4
= Trichoderma formulation, T
5
= Poultry waste, T
6
=
Autostine 50 WP + Trichderma formulation, T
7
= Furadan 5G + Trichderma formulation,
T
8
= Krosin 10 SP + Poultry waste, T
11
= Krosin 10 SP + Poultry waste, T
12
= Trichderma
formulation + Poultry waste, T
13
= Autostin 50 WP + Trichderma formulation + Poultry
waste, T
14
= Furadan 5G + Trichderma formulation + Krosin 10 SP, T
15
= Furadan 5G +
Trichderma formulation + Krosin 10 SP + Poultry waste, T
16
= Control. The combination
of treatment T
15
showed promising result in reducing the incidence of wilt complex of
tomato influencing the yield and yield contributing characters where Furadan 5G,
Trichoderma formulation, Krosin 10 SP and Poultry waste were applied combinedly.
Treatment T
14
(Furadan 5G + Trichoderma formulation + Krosin 10 SP) and treatment T
7
(Furadan 5G + Trichoderma formulation) also showed remarkable results. The BCR
analysis showed that the highest BCR (6.09) was counted in case of T
15
followed by T
14
(5.25) and T
7
(4.93) where investing Tk. 1.00, the tomato growers will grossly earn Tk.
6.09, 5.25 and 4.93, respectively.
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
