How do the nitrogen level and form and crop density influence the progression of alternaria leaf spot disease on hemp crop in Northern Baltic region? (2026)

The cultivation of oilseed hemp (<i>Cannabis sativa</i>) has been growing in Northern Europe during the last decades, and so far, the crop has been relatively pest-free. Monitoring of <i>Alternaria</i>-like symptoms was started on the experimental field of hemp (cv ‘Finola’) in 2019. The aim of the