[fusion_builder_container hundred_percent=”yes” overflow=”visible”][fusion_builder_row][fusion_builder_column type=”1_1″ background_position=”left top” background_color=”” border_size=”” border_color=”” border_style=”solid” spacing=”yes” background_image=”” background_repeat=”no-repeat” padding=”” margin_top=”0px” margin_bottom=”0px” class=”” id=”” animation_type=”” animation_speed=”0.3″ animation_direction=”left” hide_on_mobile=”no” center_content=”no” min_height=”none”] The most effective time to control pear psylla is early in the season, Washington State University entomologist Dr. John Dunley stresses. The pest develops through five or six generations in the Wenatchee Valley, a major pear-growing region. The emergence of the pest in the spring is synchronized with the development of the tree, rather than the weather, Dunley said. Overwintering adults don’t lay eggs until green tissue starts to develop so that the nymphs that hatch […]