Kickback advised
“Warm temperatures, humidity and rainfall are combining to present an extremely high risk of blight infection.”
Mr Smith recommends products such as Roxam/ Electis (mancozeb + zoxamid) or Ranman (cyazofamid) are alternated with a product offering kickback action such as Valbon (benthiavalicarb-isopropyl + mancozeb), Infinito (flupicolide + propamocarb), Merlin (chlorothalonil + propamocarb hydrochloride), Curzate (cymoxanil + mancozeb) or Invader (dimethomorph + mancozeb).
“Kickback action is particularly important where weather conditions have delayed applications and the seven-day interval has been stretched,” he says.