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

Efficacy of Different Chemical Fungicides on Alternaria Leaf Spot of Broccoli

S.S. Siddique
Plant Pathology Division, BARI

Abstract/ Executive Summary:

An experiment was conducted during 2014-2015 cropping season to study the efficacy of eight fungicides and one botanical oil such as mahogany oil for controlling Alternaria leaf spot of Broccoli in the plant pathology field of RARS Jessore. Amister Top performed the lowest disease index (1.27) with reduce the lowest number of diseased leaf spots (117.3.Simultaneously,this treatment increased plant height (46.33cm)with moderate plant weight(347 gm) and performed the highest yield (3.77kg/plot) of broccoli compare to control.

Keywords: Alternaria leaf spot, Broccoli, Fungicide

Location: Regional Agricultural Research Station, Jessore

Start Date: 00-00-2014

End Date: 00-00-2015

Program Area: Pest Management

Commodity: Broccoli, Fungicide

Objectives:

This experiment was under taken to study the efficacy of nine fungicides along with one botanicals against this disease alternaria leaf spot of Broccoli

Methodology:

This experiment was conducted at Regional Agricultural Research Station, Jessore during Rabi 2014-15. The experiment was laid out in a RCB design with three replications. Unit plot size 3m x 3m with 1 m plot to plot distance and 1.5m replication to replication distance. The date of transplanting was 27 th November 2014. There were 10 treatments including control such as T₁= Bavistin (2gm/l), T₂= Rovral (2gm/l), T₃= Iprozim (1gm/l), T₄= Secure 600(2gm/l), T₅= Ridomil Gold 440SC (1gm/l), T₆= Mahogany oil (5ml/l), T₇= Deconil 50 EC (1.5ml/l), T₈= Amistar Top (1ml/L), T₉= Dithane M-45 (2gm/l), and T₁₀= Control. Three spray at 10 days interval were done after first appearance of the disease symptom. Number of spots was counted from ten leaves of each plot. Disease data had been taken according to 0-5 scale where,0= No infection, 1= 0.1-6% leaf area diseased, 2= 6.1-12% leaf area diseased, 3=12.1-25% leaf area diseased, 4=25.1-50% leaf area diseased, 5= above 50% leaf area diseased. Data on yield contributing characters such as plant height (cm)/plant/plot, number of leaves/plant/, weight of whole plants/plot, yield/plot in kg were also recorded during the harvesting time.

Source of Information: Annual Research Report, Plant Pathology Division, BARI--2014-15

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The effect of these nine chemical fungicides and Mahogoni oil on Alternatria leaf spot disease and yield of broccoli were studied. The lowest disease index (1.27) was recorded in Amister Top (T₈) treated plot, and it was statistically similar with T₅(Ridomil), T₂ (Rovral), T₃(Iprozim) and T₇(Deconil) treated plot; 1.40, 1.47,1.53 and 1.53 respectively. Similarly,T₈(Amister top) treated plot performed lowest number of spots/10 leaves (117.3) and three other plot like T₅ (Ridomil Gold), T₇ (Deconil), T₆(Mahogoni) performed statistically similar result with T8 such as 135, 139.3 and 141.3 respectively, whereas control ( T₁₀ ) treated plots recorded the highest number of spots (282.3). However, T₄ (Secure) gave the highest weight of plants/plot (416 gm) and on the contrary, T₈ (Amister Top) performed the highest plant height (46.33 cm), which was statistically similar with all the treatment except T₂ and T₃. The highest yield/plot was performed by T₈ (3.78 kg) and it showed statistically similar result with T₅ (3.75kg). Control plots with T₇ treatments recorded the lowest yield/plot 1.35 kg and 1.56 kg respectively. Amister Top reduces the incidence of Alternaria leaf spot of broccoli and performed the lowest spots number/10 leaves comparing other treatments and control. Though Ridomil Gold performed better in all the cases in previous year but in the current season its performance was moderate considering the reduction of disease incidence and spot number per 10 plots. However both these treatments Amister top and Redomil Gold gave the highest yield in case of Broccoli. On the other hand Mahogany seed oil reduced the spot number comparing to the control but it did not affect significantly on yield and yield contributing characters.

Knowledge Management: Report/Proceedings