A device to disperse artificial herbivore-induced plant volatiles that attract natural enemies of herbivores for pest control
We herein report the structure and performance of a device to disperse an artificial blend of four volatile compounds (sabinene, n-heptanal, α-pinene, and (Z)-3-hexenyl acetate) that attract Cotesia vestalis, a parasitoid of diamondback moth (DBM) larvae, for DBM control. We found that a micropore film bag containing a piece of cellulose cardboard impregnated with an aliquot of a 0.05 or 5% blend solution attracted C. vestalis in a choice chamber in the laboratory. Using gas chromatography-mass spectrometry, we measured the amounts of the volatiles emitted from the device and found that they decreased, with slight changes in the ratios of the four compounds. In order to use the bag for DBM control under field conditions, the emission area of the attractants needs to be increased. Thus, we designed a belt-type dispenser consisting of artificial blend bags connected in a row.
Kugimiya, S., Uefune, M., Sano, K. and Takabayashi, J. 2017. A device to disperse artificial herbivore-induced plant volatiles that attract natural enemies of herbivores for pest control. Acta Hort. (ISHS) 1169:113-118
herbivore-induced plant volatiles, diamondback moth, Plutella xylostella, Cotesia vestalis, greenhouse, biological control