Table 4.
Risk mitigation measure | Description of applied measures |
---|---|
Production of seedlings in greenhouse | Seedlings develop in protected environments free of pests, ensuring plants which are not suitable are discarded and after 2 weeks only healthy plants are transplanted into the field (in some areas in Yucatan seeds develop directly in the field). |
Protected cultivation | Not applied, only seedlings are raised in greenhouse conditions in most areas. |
Pest specific monitoring | Mexico adopted a specific ‘National Campaign Against Eastern Thrips’ including surveillance and monitoring systems for T. palmi. Sampling data are recorded by field staff (project professionals/field assistants). This consists of several measures:
|
Chemical control | Various insecticides are frequently applied (see details in Appendix A). |
Weed control | Elimination of alternative hosts through hand weeding or by applications of glyphosate. |
Biological control | Biological control agents are applied (dossier section 6) during pre‐harvest and harvest. Application to foliage. In addition to naturally occurring control agents in the area of M. charantia production, at the moment of detecting T. palmi at low levels (1–3.9 ind/organ sampled) biological control is applied:
|
Cultural control |
Padding: the crop rows are covered with silver padding that prevents the emergence of weeds next to the plants, which can be alternative hosts of T. palmi; in addition, the silver padding acts as pest repellent. Cleaning and disinfection of tools: the scissors and boxes used to cut the fruits are cleaned and of polluting materials where they could accommodate T. palmi. |
Inspection | Fruits are visually inspected in the field during harvesting by the technical field staff, and should be free from visible defects. |
Pest‐free area | Not applied; there are no official pest‐free areas in Mexico |