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Efeito da aplicação de polímeros (químico vs orgânico) e de micorrizas em plantas de Medronheiro em condições de stress hídrico
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Entre os dias 21 de abril e 08 de julho de 2023 foi instalado um ensaio sem rega nem rede de sombra no viveiro florestal da Escola Superior Agrária de Coimbra que consistiu em 13 tipos de tratamento e um substrato de textura grosseira de forma a avaliar qual os efeitos ao stress hídrico. Os tratamentos foram comparados com um de controlo (C) e era caracterizados pelo seguinte: Ta1 – ectomicorrizas; Ta2 – endocmicorrizas; Ta3 – Caldo esporal; Ta4 – ectomicorrizas e polyter seco (2g/planta); Ta5 – endomicorrizas e polyter seco (2g/planta); Ta6 – Caldo esporal e polyter seco (2g/planta); Ta7 – Ectomicorrizas e hidroretentor seco (2g/planta); Ta8 – Endomicorrizas e hidroretentor seco (2g/planta); Ta9 – Caldo esporal e hidroretentor seco (2g/planta); Ta10 – Ectomicorrizas, hidroretentor seco (2g/planta) e 25% de fósforo; Ta11 - Endomicorrizas, hidroretentor seco (2g/planta) e 25% de fósforo e por fim o Ta12 – Caldo esporal, hidroretentor seco (2g/planta) e 25% de fósforo.Quinzenalmente foram avaliados os parâmetros fisiológicos e ao fim do ensaio procedeu-se à avaliação do sistema radicular.Os tratamentos onde os resultados obtidos foram mais satisfatórios consistiram na conjugação entre o uso de hidroretentor seco juntamente com o caldo esporal.
Between April 21 and July 8, 2023, a trial was conducted without irrigation or shade netting at the forest nursery of the Agrarian School of Coimbra. The trial consisted of 13 types of treatments and a coarse-textured substrate in order to evaluate the effects of water stress. The treatments were compared to a control group (C) and were characterized as follows: Ta1 – ectomycorrhizae; Ta2 – endomycorrhizae; Ta3 – spore solution; Ta4 – ectomycorrhizae and dry polyter (2g/plant); Ta5 – endomycorrhizae and dry polyter (2g/plant); Ta6 – spore solution and dry polyter (2g/plant); Ta7 – ectomycorrhizae and dry water-retainer (2g/plant); Ta8 – endomycorrhizae and dry water-retainer (2g/plant); Ta9 – spore solution and dry water-retainer (2g/plant); Ta10 – ectomycorrhizae, dry water-retainer (2g/plant) and 25% phosphorus; Ta11 – endomycorrhizae, dry water-retainer (2g/plant) and 25% phosphorus; and finally, Ta12 – spore solution, dry water-retainer (2g/plant) and 25% phosphorus.Physiological parameters were evaluated biweekly, and at the end of the trial, the root system was assessed. The treatments that yielded the most satisfactory results were those combining the use of dry water-retainer with the spore solution.
Between April 21 and July 8, 2023, a trial was conducted without irrigation or shade netting at the forest nursery of the Agrarian School of Coimbra. The trial consisted of 13 types of treatments and a coarse-textured substrate in order to evaluate the effects of water stress. The treatments were compared to a control group (C) and were characterized as follows: Ta1 – ectomycorrhizae; Ta2 – endomycorrhizae; Ta3 – spore solution; Ta4 – ectomycorrhizae and dry polyter (2g/plant); Ta5 – endomycorrhizae and dry polyter (2g/plant); Ta6 – spore solution and dry polyter (2g/plant); Ta7 – ectomycorrhizae and dry water-retainer (2g/plant); Ta8 – endomycorrhizae and dry water-retainer (2g/plant); Ta9 – spore solution and dry water-retainer (2g/plant); Ta10 – ectomycorrhizae, dry water-retainer (2g/plant) and 25% phosphorus; Ta11 – endomycorrhizae, dry water-retainer (2g/plant) and 25% phosphorus; and finally, Ta12 – spore solution, dry water-retainer (2g/plant) and 25% phosphorus.Physiological parameters were evaluated biweekly, and at the end of the trial, the root system was assessed. The treatments that yielded the most satisfactory results were those combining the use of dry water-retainer with the spore solution.
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Palavras-chave
medronheiro stress hídrico sobrevivência