Crescimento e qualidade de mudas de Cassia grandis Linnaeus f., Plathymenia foliolosa Benth. e Dipteryx alata Vogel em resposta à adubação fosfatada e saturação por bases do substrato

• Autor(a) principal: Freitas, Eliane Cristina Sampaio de
• Data de Publicação: 2013
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: http://locus.ufv.br/handle/123456789/3144
• topic: Nutrição florestal; Propagação de plantas; Viveiro florestal; Forest nutrition; Plant propagation; Forest nursery; CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::SILVICULTURA

Given the exploration of natural resources, many times disordered, culminating in degradation of areas and loss of biodiversity, the environmental recovery through native species is important to reestablish the equilibrium of ecosystems and to preserve the species. Quality seedlings are fundamental to ensure the success of forest plantations, since they allow a better growth and survival once planted. For the production of quality seedlings it is necessary to know the nutritional requirements of cultivated species. However, for many native woody species, this knowledge is still scarce. Therefore, this study aimed at evaluating the influence of basis saturation of substratum and the phosphate fertilization on the growth and seedlings quality of cássia-rosa (Cassia grandis Linnaeus f.), vinhático-damata (Plathymenia foliolosa Benth.) and baru (Dipteryx alata Vogel), using like substrate a dystrophic red-yellow latosol, with clay texture. The treatments were represented by a factorial of 6 (P doses: 0, 120, 240, 360, 480 and 600 mg dm-3) by 5 (basis saturation: 3,5 (original), 25, 40, 55, 70 %) being arranged in a randomized blocks design with four replications. In the end of the experiment were obtained the height of shoot, stalk diameter, mass of shoot dry matter, mass of roots dry matter, and total dry matter, beyond their relationships, and the Dickson's quality index. The phosphate fertilization contributes to the growth and the seedlings quality of Cassia grandis and Plathymenia foliolosa. The Dipteryx alata seedlings don´t present response to the phosphorus doses, showing be potential to the planting in soils with low content of this nutrient.