Description
Onion oil is a natural substance with important repellent properties against various harmful insects, managing to mask the smell of maturing crops, making them imperceptible to the parasites' sense of smell.
To use it, it is necessary to pour it undiluted into small glass jars or plastic containers, equipped with openings to facilitate evaporation.
In particular, it is recommended to fill these containers with 20 ml of oil. An alternative is to use specific devices, previously prepared, filling them with 4.4 g of onion oil and adding ethylene-vinyl acetate granules, which improve the release of vapors, up to a total of 30 g.
Dosage
| As a repellent for Umbelliferous crops | ||
| Crop | Adversity | Dosage in dispensers |
| Umbelliferous crops (Carrots, Celery, Parsnip, Parsley) | Carrot fly Rose psyllid | 0.08 - 0.160 L/ha at 17.6 - 35.2 g/ha |
It is recommended to install 4 to 8 dispensers per hectare, placing them on supports at a height of 30-40 cm from the ground.
The reported dosages refer to those officially published in the EFSA Reports.
