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Effect of Soil Application with Trichoderma Harzianum and Some Selected Soil Amendments on Fusarium Wilt of Tomato

M. T. Islam
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka (1207), Bangladesh

A. N. Faruq
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka (1207), Bangladesh

M. M. Uddin
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka (1207), Bangladesh

N. Akhtar
Department of Plant Pathology, Sher-e-Bangla Agricultural University, Dhaka (1207), Bangladesh

Abstract/ Executive Summary:

Field experiments were carried out to test the efficacy of Trichoderma harzianum and some selected soil amendments such as poultry waste, coco-dust, vermicompost, ash, saw-dust, khudepana, cow dung, solarized sand, etc. against wilt disease of tomato during the winter season of 2008-2009. The treatments were applied in the soil at 15 days before transplanting. It was found that all the treatments appreciably reduced wilt incidence at different days after transplanting. In general, the wilt incidence was higher on control plot where no treatments were used. The most effective treatment was Trichoderma harzianum followed by poultry waste in terms of suppressing wilt incidence, increasing plant growth and fruit yield. Vermicompost also showed better
performance in suppressing the wilt incidence at different days after transplanting over control and enhancing the plant growth and fruit yield.

Keywords: Tomato, Fusarium, Wilt, Soil amendment, Trichoderma harzianum, Poultry waste, Vermicompost

Location: Field of Shere-Bangla Agricultural University, Dhaka

Start Date: 00-12-2008

End Date: 00-03-2009

Program Area: Pest Management

Commodity: Tomato

Objectives:

To evaluate Trichoderma harzianum and some selected soil amendment against Fusarium wilt of tomato

Methodology:

The experiment was conducted in a Complete Randomized Block Design (CRBD) with three replications at the field of SAU (Shere-Bangla Agricultural University, Dhaka) farm during 2008-2009 cropping season. Unit plot size was 3 x 1m², maintaining a distance of 75 cm from plant to plant and 1 m from row to row. Tomato variety BARI Tomato-2 (Ratan) was used for the experiment. Ten different treatments, viz. T₁=Soil application with Trichoderma harzianum; T₂=Soil application with poultry waste; T₃=Soil application with coco-dust; T₄=Soil application with vermincompost; T₅=Soil application with ash; T₆=Soil application with saw-dust; T₇=Soil application with khudepana; T₈=Soil application with cow dung; T₉=Soil application with solarized sand; and T₁₀=Control (untreated) were assessed in the experiment. An effective isolate of Trichoderma harzianum was used in this experiment. The antagonistic Trichoderma were mass multiplied in PDA media incubated at 250C for 7-10 days. The fungal mat suspension was made by scraping the 10-15 days old culture substrate with the help of blender, and adjusted the concentration 107 colony forming unit ml^-1 (cfu ml^-1). Then, soil of the specific plot was drenched with the fungal suspension @ 3 l plot^-1with the help of compressed air hand sprayer after pulverized the soil to mix up fungal inoculum throughout the soil. Seed treatment with bio-agent was done by dipping the seeds in the fungal suspension for 1 h. After treatment, the seeds were allowed to air dry for 6 h. Soil amendments were applied on the seed-bed soil and left for 15-30 days for proper decomposition, growing antagonistic microorganisms and developing suppressiveness. Data on incidence of wilts were recorded at 55, 65, 75 and 85 days after transplanting (DAT). The percentage of disease incidence was calculated using the following formula:

Disease incidence (%) = [Number of infected plants ÷ Number of total plants] x 100

The growth and yield parameters were also taken under investigation. The data were analyzed statistically using the computer package program MSTAT. Treatments’ means were compared by DMRT (Duncan’s Multiple Range Test).

Source of Information: IJBSM 1(2), 87-90, (2010)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the findings of the present investigation it can be concluded that Trichoderma harzianum, poultry waste and vermicompost showed better performance against wilt disease among the treatments tested in the investigation.

Knowledge Management: Journal