Testing Fungi Spreaders for Natural Pest Control in Bitter Gourd Fields

Jim Crocker
31st July, 2024

Testing Fungi Spreaders for Natural Pest Control in Bitter Gourd Fields

This experimental field setup was designed to evaluate the efficacy of transmission devices using different combinations of attractants and entomopathogenic fungi, placed in surrounding maize rows, for controlling the cucurbit fruit fly (Bactrocera cucurbitae) in a bitter gourd crop.

Image adapted from: Gogi et al. / CC BY (Source)

Key Findings

  • The study was conducted in bitter gourd fields to control Bactrocera cucurbitae infestations using entomopathogenic fungi (EPF)
  • Using Butanone acetate with Beauveria bassiana in EV-HTD devices significantly reduced pest infestations and increased marketable fruit yield
  • This method proved more effective and economically beneficial than traditional chemical pesticides, promoting sustainable agriculture
Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae) infestation is a significant threat to bitter gourd cultivation. Traditionally, synthetic pesticides have been employed to manage this pest, but these chemicals come with considerable drawbacks, such as non-target toxicity, resistance development, and environmental contamination[2][3]. The University of Agriculture has conducted a study to evaluate entomopathogenic fungi (EPF) as a sustainable alternative to chemical pesticides for controlling B. cucurbitae[1]. EPF are fungi that can infect and kill insects, providing an eco-friendly pest control solution. These fungi are integral to Integrated Pest Management (IPM), which aims to reduce reliance on chemical pesticides and promote sustainable agriculture[2]. The study focused on the use of entomo-vectored horizontal transmission devices (EV-HTD) in bitter gourd fields, assessing the effectiveness of GF-120 and Butanone acetate. The researchers measured the impact of these devices by converting fruit infestation data into yield loss per plant, marketable fruit yield per plant, marketable yield per hectare, and yield loss per hectare. The findings suggest that EV-HTD can significantly reduce B. cucurbitae infestation, thereby minimizing yield loss and increasing marketable fruit yield. This study builds on previous research indicating the potential of microbial solutions for pest management. For instance, entomopathogens (ENMs) have shown promise in suppressing pests due to their ability to target specific insects without harming non-target organisms[2]. The compatibility of EPF with other pest control methods, such as floral attractants, has also been demonstrated[4], highlighting the versatility of these fungi in integrated pest management systems. The study's findings align with the broader goal of improving crop production while considering environmental and human health concerns[2]. By reducing the need for synthetic pesticides, EPF-based solutions can help mitigate the adverse effects of chemical residues on food safety and public health[3]. Additionally, the use of EV-HTD enhances the efficacy of EPF by facilitating the horizontal transmission of fungal spores among pest populations, thereby increasing pest mortality rates. In summary, the University of Agriculture's study demonstrates the effectiveness of entomopathogenic fungi in controlling Bactrocera cucurbitae infestations in bitter gourd fields. This approach not only addresses the limitations of synthetic pesticides but also promotes sustainable and environmentally friendly pest control practices. The integration of EPF into IPM strategies represents a promising step towards achieving global food security and safeguarding human and environmental health.

AgriculturePlant ScienceMycology

References

Main Study

1) Field appraisal of entomopathogenic fungi horizontal transmission device for entomo-vectoring of Beauveria bassiana and Metarhizium anisopliae in bitter gourd field against Bactrocera cucurbitae (Coquillett) (Diptera: Tephritidae)

Published 30th July, 2024

https://doi.org/10.1186/s41938-024-00812-5

Related Studies

2) Entomopathogen-based biopesticides: insights into unraveling their potential in insect pest management.

https://doi.org/10.3389/fmicb.2023.1208237

3) Pesticide Use and Degradation Strategies: Food Safety, Challenges and Perspectives.

https://doi.org/10.3390/foods12142709

4) Horizontal transmission of Metarhizium anisopliae between Spoladea recurvalis (Lepidoptera: Crambidae) adults and compatibility of the fungus with the attractant phenylacetaldehyde.

https://doi.org/10.1016/j.micpath.2019.04.010


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