International Year of Plant Health – Grape phylloxera – Portugal 2020
The United Nations General Assembly has declared 2020 as International Year of Plant Health to raise global awareness on how protecting Plant health can help end hunger, reduce poverty , protect environment and boost economic growth. The Theme is “Protecting Plants, Protecting Life”.
Portugal issued a set of Four Stamps on International Year of Plant Health.
Date of Issue 25 Oct 2020
0.53 Euro – Daktulosphaira vitifoliae – The grape phylloxera is an insect that originated in North America, appearing in Europe for the first time in 1863, in France, where it was most likely imported on infected vines. The insect quickly became established and spread, affecting every winegrowing region in Europe. Portugal was very badly affected: the first official record of the pest dates back to 1871 in the Douro region, where many vines were completely destroyed and vast swathes of the landscape were rendered sterile, leading to financial ruin and depopulation in the worst affected areas. Several methods for fighting the insect were attempted and the most effective proved to be the use of rootstocks from American vines that were resistant to the insect. The practice remains necessary to this day. The phylloxera plague led to the birth of the concept of global plant protection and a convention was signed between five countries (Germany, Austria-Hungary, France, Portugal and Switzerland) in Bern in 1881
0.86 Euro – Bursaphelenchus xylophilus – The pine wood nematode is considered to be one of the most potentially destructive species for coniferous forests
0.91 Euro – Ceratitis capitata– Known as the Mediterranean fruit fly, this pest attacks a variety of crops and wild plants, laying its eggs in their fruit.
2.00 Euro- Rhynchophorus ferrugineus -The palm weevil attacks several species of palm trees, causing damage which can lead to the death of these plants without the necessary treatment