Tropicomyia passiflorella is a serious passion fruit pest in Taiwan. Owing to no insecticide control, I want to screen some effective essential oils that could repel this pest to damage passion fruits.
Thanks for your help!
Dear Dong Yaw-Jen,
You may try using neem leaf extract (10-20%) or neem seed kernel extract (2%) or neem oil (2-5%). In addition, you may try oils of lavender, citronella. Also you may try combination of these oils
I hope this helps.
Best Wishes,
Pratik
Also check https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4759814/
And https://www.healthline.com/health/essential-oils-spider-repellent
I would also encourge you to try some medicinal plants that are native to Taiwan. A simple water extract with different concentrations can be investigated.
Hello! I would have tested formulations with tinctures or extracts from tobacco and Nicotiana rustica, chamomile Matricaria chamomilla, Aster, birch or other tar (tar soap), wormwood Artemisia absinthium . And garlic. If oils - lavender, pine , spruce, peppermint, eucalyptus, thyme, cinnamon, rosemary, lemongrass, eucalyptus, geranium, cedar, patchouli
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