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Development of Biorational Management Approach(es) Against Tomato Leafminer, Tuta Absoluta (2017 – 2018)

MS Hossain
Horticulture Research Centre, BARI, Joydebpur, Gazipur Bangladesh

AK Das
Horticulture Research Centre, BARI, Joydebpur, Gazipur Bangladesh

Abstract/ Executive Summary:

The experiment was carried out at farmer’s field of Chaklarhat village, Tunirhat, Panchagarh district, Bangladesh during January 2018 to June 2018 to find out an effective and suitable management approach against tomato leaf miner, Tuta absoluta. Results revealed that Foliar spray of Azadirachtin (Bio-Neem plus 1EC @ 1ml/L of water)+ Mass trapping through installation of Delta sex pheromone trap+Application of Metarrhizium anisolpiae biopesticide in soil @ 5g/L of water performed best in reducing Tuta infestation, increase of marketable yield highest marginal benefit cost ratio.

Keywords: Tomato, Leafminer, Tuta absoluta, Biorational management

Location: Chaklarhat village, Tunirhat, Panchagarh district, Bangladesh

Start Date: 00-00-2017

End Date: 00-00-2018

Program Area: Pest Management

Commodity: Pest, Tomato

Objectives:

To find out an effective and suitable management approach(es) against tomato leaf miner.

Methodology:

The experiment was carried out at farmer’s field (26.2019⁰N and 88.3745⁰E) of Chaklarhat village, Tunirhat, Panchagarh district, Bangladesh during January 2018 to June 2018. Indian Hybrid variety501 was used as test crop. Total ten treatments viz, Treatment₁= Application of Metarrhizium anisolpiae biopesticide in soil @ 5g/L of water, Treatmen t ₂=Foliar spray of Azadirachtin (Bio-Neem plus 1EC @ 1ml/L of water), Treatmen t₃= Foliar spray of Bacillus thuringiensis (Biocure) @ 2g/L of water, Treatmen t ₄= Mass trapping through installation of Delta sex pheromone trap, Treatmen t ₅= Spraying of Spinosad (Tracer 45WSC) @ 0.5ml/L of water, Treatment₆= Spraying with Chlorantraniprole (Coragen 20SC) @ 0.5ml/L of water, Treatment ₇= Hand picking and destruction of infested leaf and fruit Treatment₈= Foliar spray of Bacillus thuringiensis (Biocure) @ 2g/L of water + Mass trapping through installation of Delta sex pheromone trap+ Application of Metarrhizium anisolpiae biopesticide in soil @ 5g/L of water, Treatment₉= Foliar spray of Azadirachtin (Bio-Neem plus 1EC @ 1ml/L of water) + Mass trapping through installation of Delta sex pheromone trap+Application of Metarrhizium anisolpiae biopesticide in soil @ 5g/L of wter and Treatment₁₀= untreated control, were evaluated against Tuta absoluta following RCB design with three replications. In order to allow natural infestation the crop remains uninterrupted by any pest management operations. Foliar sprays were done by knap-sack sprayer. Data on numbers of healthy and infested plant, leaf, fruits by leafminer from whole plot was recorded weekly. On the other hand, percent plant infestation, leaf infestation and fruit damage (visual estimation) by leafminer were calculated.

The monetary return from the yield was calculated on the basis of farm gate price during April-June, 2018. Major parameters of economic analysis were computed according to following formulas: Gross return = Yield × Sale price, Net return for treatment = Adjusted return – Cost of treatment; Adjusted return due to treatment; Marginal Benefit Cost Ratio = --------------------------------------------- Cost of treatment. The data recorded on different parameters were analyzed statistically by using MSTAT-c software for analysis of variance after transformation as per necessity. ANOVA was made by F- variance test and the differences between treatment’s means were compared by LSD test (Gomez and Gomez, 1984).

Source of Information: Annual Research Report 2017 – 2018, Horticulture Research Centre, BARI, Joydebpur, Gazipur Bangladesh

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

From the results it is concluded that T₉(Application of Metarrhizium anisolpiae biopesticide in soil @ 5g/L of water + Foliar spray of Azadirachtin (Bio-Neem plus 1EC @ 1ml/L of water) + Mass trapping through installation of Delta sex pheromone trap) treated plots showed the best performance considering reduction of Tuta infestation, increase of marketable yield and marginal benefit cost ratio. This was the first year results. So, this experiment may be continued for confirmation of the results.

Knowledge Management: Report/Proceedings