This study aimed to assess the physiological and sanitary potential of peanut seeds cv. BR1, treated with powdered cinnamon (Cinnamomum zeylanicum). The experiment was conducted in the laboratories of the Seed and Plant Pathology and Microbiology at the Federal Rural University of Pernambuco / Academic Unit of Garanhuns (UFRPE / UAG). The experimental design was completely randomized, with four replications of 50 seeds. The treatments consisted of treating the seeds with cinnamon powder at different doses (0: control; 2, 4, 6, 8 and 10 g) in the ratio of 2 g powder and 81.2 g. The seeds were soaked in 1% sodium hypochlorite for 3 min, and then immediately subjected to the following tests: germination, speed of germination index, seedling length, seedling dry matter and seed health testing. Fungi of the genus Aspergillus, Penicillium and Rhizopus were detected greatly in the treatments with the highest dose. Sodium hypochlorite was effective in combating fungal growth, but damaged the physiology of the seeds. Using cinnamon powder of 5 g was efficient in controlling fungi and did not affect the seed quality of peanuts.

 

Key words: Arachis hypogaea, natural fungal control, Cinnamomum zeylanicum.