Essential oils and their combinations with iprodione fungicide as potential antifungal agents against withe rot (Sclerotium cepivorum Berk) in garlic (Allium sativum L.) crops

•Antifungal power of non-phytotoxic essential oils is useful to control white rot.•Essential oils present positive interaction with synthetic fungicides.•Essential oils can be used to reduce doses of chemical pesticides in garlic crops.•Laurus nobilis and Tagetes filifolia essential oils can be used into integrated pest management.