[Biological control of Thrips on leek in outdoor cultivation]

allium ampeloprasum allium porrum amblyseius auxiliaire de lutte biologique beauveria bassiana biological control biological control organisms biological development chemical control cultivation cultivo cultivo al aire libre cultivo de hortalizas culture en plein air entomophthora environmental factors facteur du milieu factores ambientales insecte nuisible lutte biologique lutte chimique meteorological elements microorganisme microorganismos microorganisms outdoor cropping pest insects pratique culturale thrips thrips (genre) thrips (genus) thrips tabaci vegetable growing