Does it matter what time of day the biopesticide is applied to the canopy?
Although biopesticides are killed by UV light (after two days), for practical reasons they need to be applied at any time of day when a chemical would have been applied. It is more important to apply the EPF when the pests are active in the crop and can be targeted by the biopesticide spray. Nocturnal pests (weevils and moths) should be sprayed at night. Fruit ﬂies should be sprayed between 9 and 1 am and 4 and 5 pm. Thrips should be sprayed within two hours of sunrise and within 2 hours of sunset when adults congregate on the outside of ﬂowers and the upper surface of leaves.