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Management of Powdery Mildew and Rust Diseases of Garden Pea Using Fingicides

M. M. Alam
Scientific Officer
Plant Pathology Division, Regional Agricultural Research Station (RARS), BARI, Ishurdi

M. Z. Hoque
Scientific Officer
Plant Pathology Division, Regional Agricultural Research Station (RARS), BARI, Ishurdi

M. A. Sadat
Scientific Officer
HRC, RARS, BARI, Ishurdi

M. H. Rashid
Scientific Officer
HRC, BARI, Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted to find out the efficacy of some new fungicides against powdery mildew and rust diseases of garden pea at Regional Agricultural Research Station (RARS), Ishurdi, and Pabna during 2006-07. Eight different fungicides were tested and all fungicides resulted significantly better performance over control. Considering percent disease index (PDI), pod yield and yield contributing characters (plant height, pods/plant, length of pod, breadth of pod and seeds/pod), Sedozole 5 EC performed better than other fungicides and control treatment, which was closely followed by Conza. The highest PDI of both diseases was observed in control treatment, where as the lowest PDI and percent disease reduction over control was recorded in Sedozole 5 EC. So, Sedozole 5 EC (propiconazole) may be used for controlling powdery mildew and rust diseases and increasing pod yield of garden pea.

Keywords: Fungicide, Powdery mildew, Rust, Garden pea

Location: Farm of Regional Agricultural Research Station (RARS), Ishurdi, and Pabna

Start Date: 30-11-2005

End Date: 30-11-2006

Program Area: Pest Management

Commodity: Fungicide

Objectives:

To find out the efficacy of some new fungicides against powdery mildew and rust diseases of garden pea.

Methodology:

The study of the efficacy of eight different fungicides was tested against powdery mildew and rust diseases of garden pea at RARS, Ishurdi, Pabna during Rabi season 2006-07. Seeds of garden pea variety BARI motor shuti-1 were sown in randomized complete block design with three replications. The unit plot size was 3 m x 2.5 m and seeds were sown on 15th November 2006. Recommended fertilizers were applied to raise a good crop. The experiment was conducted under natural infection condition. Eight fungicides, namely T₁=Sistin 50 WP (1 gm/l), T₂=Conza 5 EC, T₃=Acmesulf 80 WDG (2gm/l), T₄=Milivit (2gm/l),T₅= Sedozole 5 EC (propiconazole 1ml /l), T₆ =Macothan 80 WP (2 gm/l),T₇=King Meal 72 WP (2 gm/l), and T₈=Bavistin 50 WP (1 gm/l) were sprayed thrice with 10 days interval on the standing crop according to the treatments with the initiation of the disease, control plots were sprayed with plain water. The plots were irrigated at two times and other intercultural operations were done when necessary. The crop was harvested at three months and 20 days after sowing (DAS). The data were recorded from randomly selected 10 plants/plot for plant height, pod/plant, length of pod, breadth of pod and seed/pod. Data collection of disease severity of powdery mildew and rust diseases of garden pea started from just before 1st spray of fungicide 84 DAS. Green pod yield (ton/ha) and disease scoring data were recorded on whole plot basis and then disease score data converted into disease severity (PDI). The efficacy of fungicides was measured by scoring the disease severity (PDI) in the individual plot on the basis of a standard of scoring scale. Where, 0=leaf and fruit free from infection 1 = 1-5 leaves are infected, 2= 6-20% leaves are infected, 3= 21-40% leaves and fruits are infected, 4= 41-70% leaves and fruits are infected and 5=above 70% leaves and fruits are infected. The disease data were converted into percent disease index (PDI). Data were analyzed following the statistical software Mstat-C. Treatment means were compared by DMRT (Duncan’s Multiple New Range Tests).

Source of Information: Int. J. Sustain. Crop Prod. 2(3):56-60, 2007

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Both the disease symptom was observed in the first week of February (85 DAS) with increasing temperature. Sedozole 5 EC was found most effective followed by Conza 5 EC interms of reducing disease and increasing pod yield. The both diseases may be controlled by spraying Sedozole 5 EC @ 0.1%, 3 times at the interval of 10 days from the first appearance of the diseases.

Knowledge Management: Journal