Insecticidal and repellent effects of Mentha longifolia L. essential oil against Aphis craccivora Koch (Hemiptera: Aphididae)

Chemical and Biological Technologies in Agriculture

Table 3 Repellent effect (mean ± SE) of M. longifolia essential oil against A. craccivora adults after 2 h of exposure

Essential oil	Repellent index (RI) after 2 h of exposure (Mean ± SD)
	Concentrations (µl/ml)
	0.5	1	2	4	8
M. longifolia	0.969 ± 0.213^I	0.906 ± 0.120^I	0.656 ± 0.157^R	0.531 ± 0.277^R	0.156 ± 0.157^R

^*R Repellent (RI less than 1 − SD), I Indifferent (RI in between 1 − SD and 1 + SD), A Attractant (RI greater than 1 + SD)