Potato Review

Find out more about our 18 month sponsorship opportunities by getting in touch with Robyn Teague 01778 395029/07980 210377 robyn.teague@warnersgroup.co.uk Book now via our website: https://www.potatoreview.com/national-potato-industry-awards/book 2023 ALTERNARIA these stress-mitigating effects are planned for the 2022 season. Recent Alternaria research inDenmark, has suggested that while all cultivars in the trials were susceptible to Alternaria, the rate at which the infection developed in the foliage could indicate some varietal resistance. Later maturing varieties were typically, but not exclusively, more resistant to disease spread. Successive seasons reporting of UKAlternariamonitoring by NIAB, sponsored by Syngenta, has highlighted no significant varietal trends. It has, however, repeatedly shown that A. alternata has been the first early blight pathogen to hit potato crops, followed by later infections of A. solani. “That’s important because A. alternata can createmultiple leaf lesions and damage, which could prove to be entry points for themore aggressive A solani,” advisedMr Cunningham. “It also validates why agronomists would choose to use difenoconazole first as an active against A. alternata, followed by Amistar later in the season for A. solani and green leaf area protection.” “Treatments have historically been focused to start around the end of June or beginning of July … that may need to be brought forward this season.” Alternaria alternata under the microscope. Alternaria infection developed to leaf destruction.