Management of wheat blast with synthetic fungicides, partial resistance and silicate and phosphite minerals

Histochemical aspects of wheat resistance to leaf blast mediated by silicon

“…), sorghum (Sorghum bicolor) and soybean (Glycine max) (Datnoff et al, 2007). Application of Si can increase wheat resistance to powdery mildew Rémus-Borel et al, 2005;Guével et al, 2007), leaf streak (Silva et al, 2010), spot blotch (Domiciano et al, 2010) and leaf blast (Xavier Filha et al, 2011;Pagani et al, 2014). The Siincreased resistance of plants can be attributed to the deposition of amorphous silica in leaves, which prevents or delays fungal penetration of the epidermal cells or to an increased concentration of phenolics, lignin and phytoalexins, as well as rapid and strong activation of certain pathogenesis-related genes (Datnoff et al, 1997).…”

Los fosfitos como alternativa para el manejo de problemas fitopatológicos

“…El ion fosfito es fácilmente transportado en las plantas vía xilema y floema (McDonald et al, 2001;Tkaczyk et al, 2016), por lo que se ha utilizado en aplicación foliar (Rebollar-Alviter et al, 2010;Silva et al, 2011;Pagani et al, 2014;Yáñez et al, 2014;Liljeroth et al, 2016;Borza et al, 2017), baño a la raíz y cuello de la planta (Oka et al, 2007;Akinsanmi y Dreth, 2013), inyección al tronco (Bock et al, 2012;Akinsanmi y Drenth, 2013: Aćimović et al, 2015Aćimović et al, 2016), a través de riego por goteo mezclado en la solución nutritiva en hidroponía (Förster et al, 1998), tratamiento a semilla (Abbasi y Lazarovits 2006; Lobato et al, 2008), aplicación aérea en bajo volumen ) o como tratamiento en inmersión de semillas y frutos (Anderson et al, 2012;Cerioni et al, 2013, Borin et al, 2017Pagani et al, 2014;Yáñez et al, 2014;Liljeroth et al, 2016;Borza et al, 2017), drench of plants root and neck (Oka et al, 2007;Akinsanmi and Dreth, 2013), trunk injection (Bock et al, 2012;Akinsanmi andDrenth, 2013: Aćimović et al, 2015;Aćimović et al, 2016) through drip irrigation mixed in a nutrient solution in hydroponics (Förster et al, 1998), seed treatments (Abbasi and Lazarovits 2006; Lobato et al, 2008), low-volume aerial applications or as a treatment in seed and fruits immersion (Anderson et al, 2012;Cerioni et al, 2013, Bor...…”

Wheat blast research: Status and imperatives

“…Ever since its first report, blast pathogen was variously named by researchers for example, Pyricularia oryzae Oliveira et al, 2015;Cruz et al, 2015a;Silva et al, 2015), Pyricularia grisea (Filha et al, 2011;Kohli et al, 2011;Rocha et al, 2014), Magnaporthe grisea (Urashima and Kato, 1994;Peng et al, 2011;Pagani et al, 2014) and M. oryzae Triticum (Cruz et al, 2015a). Blast pathogen has shown capability to evolve fast to adapt to new climates.…”

“…Since strobilurins are widely used to manage wheat blast in Brazil, there has been a surge in frequency of the G143A mutation in the wheat infecting population of M. oryzae from 36% in 2005 to 90% in 2012 . Pagani et al (2014) advocated integrating several options for efficient management of wheat blast. In a two year study, they found that phosphite treated plots increased yield by 9 to 80%, silicon (Si) treatment by 26 to 92% and synthetic fungicides by 90 to 121%.…”