Potato Review

www.potatoreview.com POTATO REVIEW NOVEMBER 2021 23 LATE BLIGHT have 12 blight sprays. When the blight pressure racks up like it has this year, that can go up by 50%. It challenges our ability to control late blight while continuing to deploy best-practice to protect chemistry,” he said. He said BASF’s Enervin SC is designed to be part of the solution. As a straight formulation of ametoctradin, with unique QoSI chemistry, it’s a useful tank-mix partner, offering the flexibility needed in difficult years. “Enervin SC doesn’t include any CAAs or QiIs, leaving them free to use wherever you choose,” said Paul. “And despite the pressure at this year’s Eurofins trial, Enervin SC tank mixes worked very well.” The same logic has also been applied to its latest late blight product, BAS 657. It contains ametoctradin + potassium phosphonate. “Both are non-clashing chemistry, so like Enervin SC, it can be fitted into the programme without affecting anything else,” Paul said. “The potassium phosphonate primes the plant, inducing host defence making it ideal for use early in a spray programme. The product is truly systemic and multisite, so it also fits well at the rapid canopy develop part of the programme.” BAS 750 Revysol is the other new product in BASF’s pipeline and was available to see in trials at Eurofins this year. “It’s very exciting chemistry and we’re expecting approval to come through this quarter,” Paul said. “It’s an isopropanol-azole and has been shown in other crops to deliver very strong performance with both protective and curative activity. We’ve now seen its outstanding performance with alternaria in potatoes too. In comparison with standard material, like difenoconazole, BAS 750 Revysol is a step-up in activity and has been shown to be more reliable than difenoconazole across trials in the UK and across Europe.” “It challenges our ability to control late blight while continuing to deploy best-practice to protect chemistry.” Paul Goddard, Stewardship and Value ChainManager, BASF Meg Edmonds, Operational Excellence Training Co-ordinator, Eurofins, at the trial site. Paul Goddard, Stewardship and Value Chain Manager, BASF, says up to 18 blight sprays could be needed on maincrops this year.