Inclusion in other EU ranking systems	PHRR, BiOR², M&R, ERIN
Need of automatic approach	No
Description	This criterion considers the damage caused by each pest in the absence of management measures on the main host plant in its current area of distribution. Effects on crop yield are usually expressed as a relative decrease (%) per crop per ha. Thresholds are defined for crop yield. For crops grown in protected conditions/greenhouses (tomatoes, cut flowers, potted plants) and forestry, annual yield fluctuations are usually very small and a yield loss greater than 10% can be considered as a massive impact. For crops with large yearly fluctuations, e.g. fruit and arable products, nursery stock and outdoor vegetables, a loss of more than 30% would be needed before it could be considered a massive impact.
Scoring	Score = C(Indicator) C is given as follows:
			Crops grown in protected conditions/greenhouses (tomatoes, cut flowers, potted plants) and forestry	Nursery stock, outdoor vegetables and fruit and arable products
	C	Indicator
	2	Massive yield loss	> 10%	> 30%
	1	Limited yield loss	[0–10] %	]0–30] %
	0	No yield loss	0	0
	If ‘No info’, apply the midpoint scenario (Score = 1)
Data	List of host plants, data on damage
Example	Fusarium oxysporum f. sp. lactucae. Yield losses reported are up to 50% on lettuce in protected plastic tunnels. = 2