Potato Review

www.potatoreview.com POTATO REVIEW MAY/JUNE 2023 59 ADVERTORIAL T he bene cial increase in tuber numbers with the early tuber set Quantis timing was also seen even where no stress events occurred. e Syngenta Potato Science trials, in collaboration with Wageningen University & Research in Holland, and using the commercial variety Innovator, revealed the optimum timing was when most of the setting tubers were at the size of a small pea. Under stressful dry conditions treated plants successfully created over 11% more tubers from a single Quantis application, compared to untreated – equating to around 45,000 extra tubers per hectare at eld plantings. Plants growing under normal stress-free conditions also produced and supported a 6.5% increase in tuber numbers with the Quantis tuber initiation treatment. e size of each tuber on plants growing under drought stress conditions still averaged more than the untreated crop, along with an 8% increase in average tuber weight for the greater number of tubers from plants under normal conditions. Researchers at Wageningen University also assessed the stolon numbers of plants, showing a 30% increase in the Quantis treated crop under both drought stress and normal growing conditions. Increasing stolon numbers is an important element of an integrated rhizoctonia management strategy. Tuber set and the onset of tuber growth is a period when potato plants are highly susceptible to stress factors, such as heat, according to Syngenta Technical Manager, Andy Cunningham. “ ere is a huge wealth of scienti c research, replicated trials and eld experience that inarguably show Quantis can reduce the e ects on growing plants during periods of heat stress, and deliver a signi cant yield increase.” Quantis sets potatoes on route to higher yields New research reveals applying Quantis at tuber set enables potato plants to produce and support more tubers. e weight of individual tubers also increases, boosting overall output through the crucial growth stage. Optimum timing for Quantis application at tuber initiation, when most of the tubers are the size of a small pea. Andy Cunningham Early hotspots warning Receive earlywarnings of heat events that a ect crop growth this season, in time tomake optimumuse of Quantis stress relief timings. e development of a new digital app is a step-up from Syngenta’s web-based Quantis Heat Stress Tool, enabling you to time applications ahead of localised heat stress events. Now the information will be delivered faster and more conveniently through a mobile phone app that puts essential decision-making tools and product support into the palm of your hand. Look out formore in-seasonupdates and opportunities to sign-up: www.syngenta.co.uk “Now, the new research reveals that with an initial application at the tuber set stage to encourage plants to produce more and larger tubers, there is the potential to keep them growing more e ciently and make better use of resources right through the season.” Andy advocates Quantis should be applied as a standard treatment with a blight spray at the start of tuber set, at a rate of 2.0 l/ha. “ e strategy can add tuber numbers and size to all crops. It could prove especially useful for seed production to increase number of tubers per plant.” Syngenta UK Ltd. Registered in England No. 849037. CPC4, Capital Park, Fulbourn, Cambridge CB21 5XE Tel: 01223 883400 Technical Enquiries Tel: 0800 169 6058 Email: product.technical_enquiries@syngenta.com QUANTIS™ is a Registered Trademark of Syngenta Group Company. Always read the label and product information before use. For further product information, including warning phrases and symbols, refer to www.syngenta.co.uk