méthode biologique de lutte contre les nuisibles (2) paysage (2) Environmental sciences (2) Science (2) Pests--Biological control (2) Landscapes (2) Earth (Planet) (2) Biological control (2) céréale (2) représentation de paysage (2) diversité biologique (1) saison (1) échantillonnage (1) projet (1) pesticide (1) hivernage (1) Article (1) Diseases and pests (1) Adversaries (1) Enemies (1) Playing cards (1) Biodiversity (1) Weights and measures (1) Spring (1) Soil management (1) Sampling (1) Process (Law) (1) Play (1) Pests (1) Grammar, Comparative and general--Article (1)