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Efficacy of Fungicides in Controlling Fusarium Wilt of Gladiolus

L. Yasmin
Senior Scientific Officer
Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur 1701

M. A. Ali
Professor
Department of Plant Pathology, Bangladesh Agricultural University (BAU), Mymensingh, Bangladesh

F. N. Khan
Senior Scientific Officer
Horticulture Research Centre, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur 1701

Abstract/ Executive Summary:

The efficacy of fungicides in controlling Fusarium wilt of gladiolus was studied at Horticulture Research Centre (HRC), Bangladesh Agricultural Research Institute (BARI), Gazipur during 2010-2012 following RCB design with four replications. Six fungicides such as Bavistin (0.1%), Provax (0.2%), Mancozeb (0.2%), Rovral (0.2%), Chlorax (10%) and Cupravit (0.7%) were evaluated against the Fusarium wilt disease of gladiolus (Fusarium oxysporum f. sp. gladioli) under naturally infested field condition. Bavistin was very effective in reducing the disease incidence and thereby resulting maximum corm germination (99.98%), spike length (73.90 cm), rachis length (43.70 cm), florets spike^-1 (12.63), flower sticks plot-1 (38.75) and corm plot^-1 (60.23) and cormel yield ha^-1 (2.51 t) of gladiolus. Provax and Cupravit were also effective in inhibiting the disease incidence as well as better spike length, rachis length, florets spike^-1, no of flower sticks, corm and cormel yield.

Keywords: Gladiolus, Fusarium oxysporum f. sp. gladioli, Fusarium wilt, Bavistin, Provax, Cupravit

Location: At the Floriculture Field under the Horticulture Research Centre (HRC) of Bangladesh Agricultural Research Institute (BARI), Gazipur

Start Date: 00-00-2010

End Date: 00-00-2012

Program Area: Pest Management

Commodity: Gladiolus, Diseases

Objectives:

The present work was under taken to find out an effective chemical for controlling Fusarium wilt disease (Fusarium oxysporum f. sp. gladioli) of gladiolus.

Methodology:

The experiment was conducted at the Floriculture Field under the Horticulture Research Centre (HRC) of Bangladesh Agricultural Research Institute (BARI), Gazipur during the period of 2010-2012. The experiment was set in previously Fusarium oxysporum f. sp. gladioli infested soil. It was laid out in the Randomized Complete Block Design (RCBD) with four replications. The treatments were (1) Corm treatment + soil drenching with Bavistin (0.1%), (2) Corm treatment + soil drenching with Mancothane (0.2%), (3) Corm treatment + soil drenching with Rovral (0.2%), (4) Corm treatment + soil drenching with Provax (0.2%), (5) Corm treatment + soil drenching with Chlorax (10%), (6) Corm treatment + soil drenching with Cupravit (0.7%) and (7) Control (normal water). Corms were deeped in the solution of the fungicides for 15 minutes. The corms were sown in the field. The soil around the base of the plants was subsequently drenched with the respective fungicidal solutions at 200 ml/hill. The first drench was done at 45 days after sowing (DAS) and the second drench was at 75 DAS. The recommended dose of fertilizers cowdung @ 10 t/ha, TSP @ 225 kg/ha and MoP 190 kg/ha were applied to the soil during land preparation and thoroughly mixed with the soil. Urea @ 200 kg/ha was top dressed in two equal splits, one at the four leaf stage and another at spike initiation stage (Woltz, 1976). The unit plot size was 1.25 m × 1.6 m. Spacing was maintained at 25 cm between the rows and 20 cm between the plants. Depth of planting of the corms was 6 cm. Two adjacent unit plots were separated by 50 cm space, and there was 75 cm space between the blocks. Germination (%), Plant height (cm) , Spike length (cm), Rachis length (cm), Florets spike^-1, Flower stick weight (g), Flower sticks plot^-1, Flower sticks ha^-1, Pre-germination corm rot (%), Wilted plant (%), Disease incidence (%), Percent disease index (PDI), Corms hill^-1, Corm yield, Cormels hill^-1 and Cormels yield (g) were recorded. The disease incidence, Percent disease index and wilted plant were calculated using following formula (Singh and Arora, 1994):

Disease incidence (%) = (Number of infectedplantsplot-1)/ (Number of totalplantsplot-1) X 100
Percent disease index (%) = Class frequency/(Totalnumber of sample x Maximumgrade of scale) X 100
Wilted plant (%) = (Number of wilted plantsplot-1)/ (T otalnumber of plantsplot-1) X 100

Source of Information: Bangladesh J. Agril. Res. 42(4): 599-607, December 2017 ISSN 0258-7122 (Print), 2408-8293 (Online)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Bavistin (0.1%) used as corm treatment and soil drenching showed the best performance in reducing Fusarium wilt of gladiolus and thereby resulting maximum germination, spike length, rachis length, florets spike^-1, flower sticks, corm and comel yield. Provax and Cupravit were also effective in inhibiting the disease incidence as well as better spike length, rachis length, florets spike^-1, flower sticks, corm and cormel yield.

Knowledge Management: Journal