Tomato chlorosis virus causes yellow leaf disorder epidemics in many countries worldwide. Plants of Physalis ixocarpa showing abnormal interveinal yellowing and plants of Physalis peruviana showing mild yellowing collected in the vicinity of tomato crops in Portugal were found naturally infected...

Protected tomato is the most important horticultural crop in the Algarve (south of Portugal). However, the growing area has decreased by almost 48% since 1995, mainly as a result of the pests B. tabaci and T. vaporariorum and the epidemics of tomato yellow leaf curl virus, a Begomovirus transmitted ...

Tomato spotted wilt tospovirus (TSWV) was first reported in Portugal in 1991 and found to be associated with imported ornamental plants. Subsequently, it became an important pathogen on horticultural crops. The virus was found in >30 plant species, including vegetables, ornamentals and weeds....

During late summer 1995, an epidemic of a disease associated with whiteflies (Bemisia tabaci) seriously affected tomato crops, especially greenhouse grown crops in Algarve, Portugal. Symptoms included stunting, leaf curling and yellowing. Up to 100% of autumn crops were affected and yield was...