Crop protection practices in greenhouses in Portugal: present and future perspectives

arthropode auxiliaire biological control biological control arthropods control de insectos cultivo protegido cultivos de invernadero culture sous abri enemigos naturales ennemi naturel greenhouse crops hortalizas (plantas) insect control insecte phyllophage insectos depredadores de las hojas integrated control leaf eating insects liriomyza bryoniae liriomyza huidobrensis liriomyza trifolii lucha integrada lutte biologique natural enemies ornamental plants plantas ornamentales plante de serre plante ornementale portugal protected cultivation vegetable crops