Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Control of Alternaria Blight of Cauliflower with Botanicals

R. Islam
Scientific Officer
Plant Pathology Division, BARI, Gazipur

K. Jahan
Scientific Officer
Plant Pathology Division, BARI, Gazipur

M. E. Rahman
Senior Scientific Officer
Plant Pathology Division, BARI, Gazipur

M.S.Hossain
Chief Scientific Officer
Plant Pathology Division, BARI, Gazipur

Abstract/ Executive Summary:

An experiment was conducted during rabi 2009-2010 to test the efficacy of some botanicals against Altenaria blight of cauliflower seed crop. Five botanicals viz. neem leaf extract, marigold leaf extract, allamanda leaf extract, onion bulb extract, garlic extract and one fungicide Rovral were sprayed at 12 days interval starting from the onset of disease and continued up to pod maturity. All the botanicals significantly reduced the disease severity as compared to control . Among them Rovral 50 WP and neem leaf extract gave the highest disease reduction followed by Allamanda. The significantly highest pod length, no. of pod/plant, no.of seeds/pod and thousand seeds weight were recorded from Rovral and neem leaf extract treated plots.

Keywords: Botanicals, Cauliflower, Alternaria blight

Location: BARI, Gazipur

Start Date: 00-00-2009

End Date: 00-00-2010

Program Area: Pest Management

Commodity: Diseases

Objectives:

To evaluate five common botanicals for their efficacy against Alternaria Blight of cauliflower seed crop

Methodology:

Thirty days old seedling of variety BARI cauliflower - 1(“Rupa”) were transplanted in 2.5 m x 1.2 m unit plot in 60 cm x 50 cm spacing. Ten seedlings were planted in each plot in two rows. Experiment was laid out in RCB design with three replications. Five botanicals namely, neem leaf extract, marigold leaf extract, allamanda leaf extract, garlic extract, onion bulb extract, and one fungicide Rovral were sprayed at 12 days interval beginning from the onset of disease and continued up to pod maturity. Plot under control treatment were sprayed with plain water. All extraction were prepared by blending leaves with water (1:2 ratio). Data on percent pod infection, number of pod/ plant, percent disease index (PDI) of pod spot, pod length, number of seed/ pod and seed yield per plant were recorded. Data were taken on disease severity at (0-7 scale). (Meah 1994) and expressed in PDI (Percent disease index).

Source of Information: Annual Report 2009-10, BARI

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

All the test botanicals significantly reduced the disease incidence as compared to control and Rovral 50 WP gave the highest reduction of PDI followed by neem leaf extract and allamanda leaf extract. Maximam seed yield was obtained from Rovral treated plot followed by neem, allamanda, and marigold treated plots, respectively. However, Rovral, neem, allamanda, marigold, garlic extract had statistically similar effect on seed yield as compare to control. The highest pod numbers/plant were recorded on Rovral which was similar with neem extract treated plots. Number of seeds/pod and thousand seed weight were also higher in these two treatment. The lowest seed borne infection was recorded on Rovral and neem treated plots as compared to control.

Knowledge Management: Report/Proceedings