Table 1: Rating scale for aphid infestation and severity.

RatingIncidenceInfestation/severity

10No infestation
2≤ 100Slightly infested
3≥ 200 but ≤ 300Moderate
4≥300 but ≤ 400High infestation
5≥ 400Severe infestation

Source: adopted from Litsinger et al. [22].