Quality of Indian cedar seedlings grown under micronutrient omission

• Autor(a) principal: Faustino Munguambe, João
• Data de Publicação: 2020
• Outros Autores: Medeiros das Chagas Silva, Oclizio, Sebastão Chelene, Inês, José Comé, Mateus, Suzete Nunes da Silva, Diana, Venturin, Nelson
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/3318
• topic: forest nutrition; Indian cedar; nutritional requirements; vegetative propagation; Nutrição de mudas; cedro indiano; exigência nutricional; nutrição florestal; propagação vegetativa

The need to improve silvicultural techniques, which can contribute to increasing forest productivity, arises due to the growing demand for products derived from wood. The mineral fertilization is highlighted as essential among factors that influence the initial growth of plants, the reason why the knowledge on the nutritional requirements of forest species is found to be important. The objective of this work was to evaluate the effect of micronutrient omission on biometric parameters in seedlings of Acrocarpus fraxinifolius Wight & Arn., (Indian cedar) grown in nutrient solution. The study was established in a completely randomized design, with seven treatments, four replications and one plant per pot. Treatments consisted of the complete solution of nutrients Hoagland and Arnon and omission of the following selected micronutrients: boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo) and zinc (Zn). At 90 days after transplantation, the following biometric parameters were evaluated: height of the shoot, diameter of the stem, dry mass of the shoot and root. The visual symptoms of micronutrient deficiency were also evaluated, as well as the content and accumulation of nutrients in the aerial part of the seedlings. The deficiency of micronutrients in the nutrient solution, showed a negative effect on the growth of seedlings of Acrocarpus fraxinifolius Wight & Arn. The limiting micronutrients in the growth of Indian cedar seedlings in decreasing order were Fe>Cu>B>Mn>Mo>Zn.