IP guidelines must establish for each crop:
- A restrictive list of key pests, diseases and weeds that are economically important and require regular control measures in the region / crop concerned.
- A list of the most important known site-specific natural antagonist(s), with information on their importance in each crop. The protection and augmentation of at least 2 antagonists must be mentioned in advanced as a desirable objective sustainable production systems.
- A list of preventive and highly selective direct control measures to be used in the IP program (“green list”). See explanations and examples in the IOBC-WPRS Tool Box.
- A list of pesticides to be used with restrictions (“yellow list”): A selected group of plant protection products that do not qualify for the “green list” but should be available to the grower despite certain negative aspects, (especially for reasons of resistance management or earmarked for exceptionally difficult cases). These listed products are permitted only for precisely identified uses with clearly defined restrictions.