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Development of Management Practices Against Jassid Amrasca Devastans in Okra

M. S. Hossain
Senior Scientific Officer
Entomology Section, HRC, BARI, Gazipur

Z. Nessa
Chief Scientific Officer
Entomology Section, HRC, BARI, Gazipur

Abstract/ Executive Summary:

An experiment was conducted at the research field of Olericulture Division, Horticulture Research Center, BARI, Gazipur during March to August 2011. Six treatments were: T₁ = Spray with soap water (5g/L water), T₂ = Spray with neem oil +Trix (5ml+3ml/L water), T₃ = Spray with neem seed kernel water extract (50g/L water) , T₄ = Spray with (Fenitrothion) Sumithion 50EC (1ml/L water), T₅ = Spray with Admire 200SL (0.25ml/L water) and T₆ = Control. were evaluated for controlling jassid in okra. From the result, it is revealed that Admire 200SL @ 0.25ml per Liter of water received the lowest (3.95 jassid/5 leaves) compared to 16.25 jassid/5-leaves recorded in untreated control treatments. Jassid population reduced significantly by 75.69% over untreated control where Admire 200SL @ 0.25ml per Liter of water were used compared to spray with soap water (25.97%), Spray with neem oil +Trix (48.49%), Spray with neem seed kernel water extract (28.49%) and Spray with (Fenitrothion) Sumithion 50EC @ 1ml/L water (13.05%), But considering benefit cost ration (BCR), soap water treatment yielded the highest BCR (Tk 15.13/Tk) which is just half in treatment spraying with neem oil +Trix (Tk 7.59/Tk), (Tk 5.54/Tk) in treatment spraying with neem seed kernel water extract over untreated control. In case of jassid management chemical control performed better but non-chemical controls are economic.

Keywords: Botanicals, Jassid, Okra.

Location: Olericulture Division, Horticulture Research Center, BARI, Gazipur

Start Date: 01-03-2011

End Date: 31-08-2011

Program Area: Pest Management

Commodity: Okra

Objectives:

To investigate efficacy of botanicals on incidence of jassid in okra.

Methodology:

An experiment was conducted at the research field of Olericulture Division, Horticulture Research Center, BARI, Gazipur during March to August 2011. Six treatments were: T₁ = Spray with soap water, T₂ = Spray with neem oil +Trix, T₃ = Spray with neem seed kernel water extract, T₄ = Spray with (Fenitrothion) Sumithion 50EC, T₅ = Spray with Admire 200SL and T₆ = Control. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. The plot size was 1.25m X 3m. BARI Dherosh-1 was sown on March 2011. The Number of healthy and infested leaves/plant were recorded from randomly selected 5 plants at 7 days interval during whole cropping season. The population of jassid was recorded from 5 top leaves at 7 days interval started from first jassid infestation for five randomly selected plants from each plot by tagging and the nymphs on under side of the leaf were removed from the plant by shaking on a white paper and counted. Adults were counted by covering the whole plant with polyethylene bag.

Source of Information: BARI. HRC Annual Report, 2011-12

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 10000

Total Budget (Tk.) : 10000

Achievement/Findings:

Admire 200SL (0.25ml/L) was found most effective against jassid.Soap water and Neem oil+Trix found more economical for controlling jassid in okra.

Knowledge Management: Report/Proceedings