Research Article
Efficacy of Some Botanical Extracts Against Insect Infestation of Jute (Corchorus olitorius L.) as Leafy Vegetables
Md Masud Rana
,
Md Abul Kalam Azad*
Issue:
Volume 13, Issue 4, August 2025
Pages:
106-116
Received:
4 May 2025
Accepted:
19 May 2025
Published:
9 July 2025
Abstract: Two studies were carried out to evaluate the efficacy of nine botanical extracts against the pest incidence and severity of leafy vegetables experimental jute (Corchorus olitorius L.) field at University of Rajshahi, Bangladesh during 2023-2024. In the first study, Crude aqueous extract of cloves of Allium sativum (garlic), leaves of Elettaria cardamomum (Cardamon), leaves of Pimenta dioica (All Spice), leaves of Tamarindus indica (Tamarind), leaves of Annona squamosa (Custard Apple), leaves of Artocarpus heterophyllus (Jackfruit), clove of Curcuma longa (turmeric) and leaves of Ficus caria (Ficus) were applied at 10% (w/v) concentration for evaluation. Out of nine botanicals, Annona squamosa (Custard Apple) was found most effective in controlling different pest incidence and severity up to 8 WAS (weeks after sowing) and increased the yield by 14.39% compare to untreated control. The major insect pest was Brown Marmorated stink bug (Halyomorpha halys), Jute hairy caterpillar (Spilosoma oblique), Jute semilooper (Anomis sabulifera), Mealy bug (Ferisia pseudococcus), the highest infestation caused by Brown Marmorated stink bug (Halyomorpha halys), others were farely common in different plot. The efficacy of Tamarinds indica (Tamarind) leaves extract extract against different insects was found promising and increased the yield by 10.50% Other four botanical extracts of Allium sativum (garlic), Elettaria cardamomum (Cardamon), Pimenta dioica (All Spice), Artocarpus heterophyllus (Jackfruit), Curcuma longa (turmeric) and Ficus caria (Ficus) showed moderate efficacy against the incidence and severity of different insects, and increased yield compare to control. On the other hand the efficacy of chemical insecticides (malathion 2ml/ litre water) against different insects was found promising and increased the yield by 16.63%. Further 2nd study was carried out to confirm the efficacy of two promising botanical extracts (Annona squamosa and Tamarindus indica). Dose dependent, 5%, 10% and 20% (w/v) concentration was used. The results suggest that botanical extract of Annona squamosa (Custard Apple) 20% (w/v) concentration was found most effective in controlling different pest incidence and severity up to 8 WAS (weeks after sowing) and increased the yield by10.24% compare to untreated control. On the other hand the efficacy of chemical insecticides (malathion 2ml/ litre water) against different insects was found promising and increased the yield by 11.26%. Hence, the leaf of Annona squamosa (Custard Apple) 20% solution can be recommended to be used for managing insect pests of jute (as leafy vegetables) in eco-friendly way.
Abstract: Two studies were carried out to evaluate the efficacy of nine botanical extracts against the pest incidence and severity of leafy vegetables experimental jute (Corchorus olitorius L.) field at University of Rajshahi, Bangladesh during 2023-2024. In the first study, Crude aqueous extract of cloves of Allium sativum (garlic), leaves of Elettaria card...
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