Выберите подходящий фунгицид для защиты картофеля
re you using the right fungicides for the potato diseases you are attempting to control? Understanding how fungicides work can help you choose the right product and apply it for the best effect. Here are some things to consider as you make plans for disease management next season. Know the Pathogen Many different types of pathogens cause plant diseases: fungi, oomycetes, bacteria, phytoplasmas, viruses, and more. In potatoes, early blight is caused by Alternaria solani, a true fungus.ADVERTISEMENT Early blight (Alternaria solani) Late blight is caused by Phytophthora infestans, an oomycete. This is important to know, because fungicides that control true fungi do not always control oomycetes, and vice versa. Late blight (Phytophthora infestans)Photo by Ben Millett Powdery scab is caused by Spongospora subterranea f. sp. subterranea, a pathogen that is more closely related to protozoa than fungi. There are no good controls for powdery scab once the pathogen has been introduced into a field — there are no fungicides that target this kind of pathogen. Powdery scab (Spongospora subterranea f. sp. subterranea)Photo by A.J. Gevens Types of Fungicides We use the term “fungicide” to describe many types of biocides that control pathogens. But most fungicides target specific groups of pathogens. It would be more correct to refer...