ilicon induces resistance to Diatraea saccharalis in sugarcane and it is compatible with the biological control agent Cotesia flavipe

Autor(es)

Santos-Cividanes, Terezinha M. ^[1] ; Cividanes, Francisco J. ^[1] ; Garcia, Julio C. ^[2] ; Vilela, Michelle ^[3] ; Moraes, Jair C. ^[4] ; Barbosa, Jose Carlos ^[5]

Afiliação do(s) autor(es)

^[1] Inst Biol, Lab Parasitol Vegetal Ribeirao Preto, Ave Bandeirantes 2419, BR-14030670 Ribeirao Preto, SP - Brazil

^[2] Inst Agron Campinas, Ctr Cana, BR-14001970 Ribeirao Preto, SP - Brazil

^[3] Univ Estado Minas Gerais, Unidade Ituiutaba, BR-38302192 Ituiutaba, MG - Brazil

^[4] Univ Fed Lavras UFLA, Dept Entomol, BR-37200900 Lavras, MG - Brazil

^[5] Univ Estadual Paulista Unesp FCAV, Dept Ciencias Exatas, BR-14884900 Jaboticabal, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF PEST SCIENCE; v. 95, n. 2 SEP 2021.
• Citações Web of Science: 0

Resumo

The sugarcane borer Diatraea saccharalis (Fabricius) (Lepidoptera: Crambidae) is a major pest of sugarcane (Saccharum sp.) (Glumiflorae: Poaceae) in Brazil and has been controlled efficiently with the parasitoid Cotesia flavipes (Cameron) (Hymenoptera: Braconidae). Addition of a silicon source to the soil induces resistance to insect pests in the host plant and can be integrated with other pest-management tactics such as biological control. This study evaluated the effects of silicon on the tritrophic interactions among sugarcane, D. saccharalis, and its natural enemy C. flavipes. Sugarcane varieties (one resistant and one susceptible to the sugarcane borer) cultivated with or without silicon constituted the four treatments. IACSP 96-2042 (susceptible variety) benefited from silicate addition as the length of tunnels bored by D. saccharalis was reduced by 43%. Tunnel length in the resistant variety (IACSP 96-3060) did not change with silicon application. The fresh mass and larval body size of the sugarcane borer were not affected by the treatments. Parasitism by C. flavipes on the sugarcane borer and the morphometric parameters of this parasitoid were not affected by silicon addition, nor were cane yield and quality parameters of the two sugarcane varieties. Treatment with silicon in the management of D. saccharalis was compatible with the parasitoid C. flavipes. This study constitutes the first field evaluation of the performance of C. flavipes combined with the effect of silicon as a resistance factor in D. saccharalis control in sugarcane. (AU)

• Processo FAPESP: 10/15111-4 - Silício como indutor de resistência a Diatraea saccharalis (Fabricius) e interação com o parasitóide Cotesia flavipes (Cameron) na cultura da cana-de-açúcar
• Beneficiário: Terezinha Monteiro dos Santos Cividanes
• Modalidade de apoio: Auxílio à Pesquisa - Regular