Aphid occurrence on winter wheat

afidos aphide aphids arthropode arthropods biological rhythms caza con trampa cereales cereals crops cultivos cultivos de grano economic plants grain crops hemiptera homoptera infestation insecte insectos insects invertebrados invertebrates lutte physique metopolophium pest control methods physical control plantas plante plante de culture plants rhopalosiphum rythme biologique sitobion temps tiempo time timing trapping trigo trigo de invierno wheats winter wheat