Adubação com NPK para o desenvolvimento de mudas de Allagoptera arenaria (Gomes) O. Kuntze e análise da fluorescência transiente da clorofila a de Inga laurina (sw) e Psidium catleyanum Sabine expostas a luz solar

• Ano de defesa: 2021
• Autor(a) principal: Silva, João Vítor Garcia
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Federal do Espírito Santo; BR; Mestrado em Agricultura Tropical; Centro Universitário Norte do Espírito Santo; UFES; Programa de Pós-Graduação em Agricultura Tropical
• Palavras-chave em Português: Nutrição mineral; adubação; fisiologia vegetal; restinga; fluorescência da clorofila a; abertura de clareira; subject.br-rjbn; Agronomia
• Link de acesso: http://repositorio.ufes.br/handle/10/15895

The Atlantic Forest species have ecological functions and can help in the management of the recovery of degraded areas. These areas, generally, are characterized by being compacted, low fertility in the initial horizons that hinder or inhibit the development of some species. In order to assist degraded areas recovery projects, studies are needed that can provide the information necessary for the project's success. In this context, two experiments were developed. The first experiment was performed with a native species considered a facilitator, Allagoptera arenaria (Gomes) O. Kuntze, in order to evaluate the initial growth and quality of seedlings of the species as a function of different doses of NPK 20-00 -20 in coverage. The best seedlings were obtained when the greatest development of the root system was achieved, at the fertilization rate of 21.55 g dm– ³ of NPK. This dose provided relative absorption efficiencies of 93.81% for N and 93.56% for K. The second experiment was performed with non-pioneer species Inga laurina and Psidium cattleyanum. The hypothesis is that NPK nutrients support the photosynthetic parameters of plants, attenuating intense light photoinhibition in tropical species. The two species differed from each other in response to light. NPK fertilization attenuated the effects of photoinhibition.