“…, reduce feeding injury by Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae) (Sidhu, Stout, Blouin, & Datnoff, 2013) and increase the mortality of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in rice (Nascimento, Assis, Moraes, & Sakomura, 2014), as well as to increase the attractiveness of herbivory-injured cucumber plants to natural enemies (Kvedaras, An, Choi, & Gurr, 2010). Although most studies on Si effects on the control of herbivorous pests involve soil-applied Si, some authors also demonstrated Si-protecting effects via foliar application (Gomes, Moraes, dos Santos, & Antunes, 2008;Dalastra, Campos, Fernandes, Martins, & Campos, 2011;de Assis et al, 2012;Assis, Moraes, Auad, & Coelho, 2013). Nevertheless, results on foliar-applied Si on plant resistance sometimes are considered controversial because current evidence suggests that Si needs to be absorbed by plants roots to trigger systemic resistance (Guével, Menzies, & Bélanger, 2007).…”