Ant Abundance, identification and relation with cocoa pest attacks under several shade trees.

Khafidhan, Abied; Widyastuti, Rahayu; Abdoellah, Soetanto

doi:10.22302/iccri.jur.pelitaperkebunan.v37i3.474

Cited by 1 publication

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References 15 publications

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“…Ant species of I. cordatus has convincingly evidenced to associate with pod rot disease and its pathogen in Sulawesi 9 . The disease development caused by humidity level and a group of insects underpinning the infection process of the pathogen using microbial decomposer needs to be considered for cocoa pathogens as well 13 .…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of Cashew Nut Shell Liquid (CNSL) with Bait Formulation Against Iridomyrmex cordatus as a Vector of Cocoa Pod Rot Disease Caused by Phytophthora palmivora

Gassa¹,

Nasruddin²,

Junaid³

et al. 2022

Pakistan J. of Biological Sciences

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Background and Objective: Cashew Nut Shell Liquid (CNSL) is a biopesticide that is environment-friendly in controlling ants Iridomyrmex cordatus is a vector pot rot disease caused by Phytophthora palmivora. The research aimed to obtain the best concentration of cashew nut shell liquid formulated as smart food bait to tackle the ant population of Iridomyrmex cordatus due mainly to a vector of Phytophthora pod rot. Materials and Methods: The research was carried out in cocoa areas in South Sulawesi with a randomized block design consisting of six treatments. Feeding trials consisted of food bait formulation that was added with cashew husk, respectively 1, 10, 20% and 17.5 g carbaryl (recommended dose) and control (without cashew husk or carbaryl). Each trial was replicated five times and set near to petiole and ant tunnel nest. The research focused on the number of ant colonies established in the trees until food bait was given. Results: The trial with CNSL concentration had a positive effect on the ant population the higher concentration given, the lower the ant population was obtained. Meanwhile, the population of I. cordatus had a positive contribution to the increase of disease incidence of Phytophthora pod rot disease. Feeding trials with 1 and 5% CNSL concentrations were less effective to limit ant population and disease incidence according to the efficacy test. In contrast, the trials of 10 and 20% were able to control population density and disease incidence due to over 51.39% efficacy test. Conclusion: There was a positive trend of CNSL concentration to reduce the ant population of I. cordatus. There was the greatest association between the increase of ant population density and the increase in disease incidence of Phytophthora pod rot.

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Section: Introductionmentioning

confidence: 99%