Kartupeļu slimību attīstība bioloģiskajā audzēšanas sistēmā 2023. gadā = The development of potato diseases in organic growing system in 2023
2023
Upeniece, Linda | Bimšteine, Gunita | Stramkale, Veneranda
The organic farming system is becoming more popular, however, production of potatoes (Solanum tuberosum) in this system is complicated. The potentially most devastating diseases are potato late blight (caused by Phytophthora infestans) and early blight (caused by Alternaria spp.). The aim of the study was to evaluate the development of diseases depending on potato genotypes and applied agronomic measures in organic system. The research was carried out within the ELFLA project “Demonstration of potato varieties and technologies (planting distance and seed potato sprouting before planting) suitable for organic agriculture in Latvia in different regions of Latvia”. The monitoring of potato diseases was carried out in Viļāni and Priekuļi in organically certified trial plots. Disease development was analysed for four potato genotypes planted at two different planting distances. Potato early blight was the dominant disease during the growing season in both test sites. The first symptoms of potato late blight were observed in the first decade of July. The symptoms were observed in both test sites, both on leaves and stems. The symptoms of black scurf (caused by Rhizoctonia solani perfect stage) were observed.
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出版者 Latvijas Biozinātņu un tehnoloģiju universitāte