“…A similar result was observed with essential oil from Cinnamomum cassia (L.) J.Presl, reducing the number of galls and eggs caused by M. incognita in soya bean (Jardim et al, 2017). However, in the current study a greater reduction in the number of eggs compared with the number of galls was observed, an effect encountered in other studies (Barros, Campos, Silva, Lopez, et al, 2014;López, Campos, Júnior, et al, 2017;Pimenta, Ferreira, Pedroso, & Campos, 2017). Barros, Campos, Silva, Lopez, et al (2014) suggest that the drastic reduction in egg numbers compared with galls may be due to inability of the feeding site to provide enough nutrients for the female, with resulting poor egg production.…”