The role of herbivore-induced plant volatiles as signals mediating the attraction of herbivore enemies is a well-known phenomenon. Studies with short-lived herbaceous plant species have shown that various biotic and abiotic factors can strongly affect the quantity, composition and timing of volatile emission dynamics. | Nội dung Text The timing of herbivore-induced volatile emission in black poplar Populus nigra and the influence of herbivore age and identity affect the value of individual volatiles as cues for herbivore enemies