BIOLOGICAL AND CHEMICAL TREATMENT OF Schizolobium parahyba var. amazonicum SEEDS, A NATIVE PLANT OF THE AMAZON BIOME
2023
Antonio Pinheiro Gatti, Lucas | Bruno Michelon, Thomas | Cerioni Belniaki, Andreza | Ruaro, Lucimeris | Serra Negra Vieira, Elisa | Panobianco, Maristela
Portugués. Paricá (Schizolobium parahyba var. amazonicum) is a forest species native to the Amazon biome that is used for the recovery of degraded land and reforestation for timber extraction. Its seeds are the principal medium for seedling development; they have high market demand and value. However, they present low viability because of fungal attacks. The objective of this study was to identify fungi associated with Paricá seeds and to evaluate the germination response of seeds treated with biological agents and chemical fungicides. Two biological agents and three chemical fungicides for seed treatment were tested. Germination was evaluated using four repetitions of 25 seeds for each treatment, at a constant temperature of 25 °C. Four genera of fungi associated with Paricá seeds were identified: Aspergillus sp. (70%), Penicillium sp. (31%), Rhizopus sp. (21%), and Cladosporium sp. (8%). The antifungal treatment in Paricá seeds showed a positive effect, providing a significant increase in seed viability. The biological agents showed capacity to control fungi similar to the chemical fungicides and significantly increased seed germination.
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