tudies on pome- fruit trees insects in A.R.E. .5. population fluctuations of the pubescent rose chafer Tropinota squalida scop. Coleoptera: Scarabaeidae on apple and pear trees

animal population egipto egypt environmental factors facteur du milieu factores ambientales fruits frutas humedad relativa humidité relative infestación infestation insecta malus población animal population animale pyrus communis relative humidity rendement rendimiento scarabaeidae yields égypte