Data/hora: 08/06/2024 13:47:50

Provedor de dados: | 86
País: | Brazil
Título: | Mycorrhizal dependency of mangaba tree under increasing phosphorus levels
Autores: | Cardoso Filho,Júlio Alves; Lemos,Eurico Eduardo Pinto de; Santos,Tania Marta Carvalho dos; Caetano,Luis Carlos; Nogueira,Marco Antonio.
Data: | 2008-07-01
Ano: | 2008
Palavras-chave: | Gigaspora margarita; Glomus etunicatum; Hancornia speciosa; Biofertilizers; Native mycorrhizal fungi; Phosphorus nutrition.
Resumo: | The objective of this study was to evaluate the mycorrhizal dependency of mangaba tree (Hancornia speciosa) plantlets, under increasing levels of phosphorus fertilization. The experimental design was completely randomized in a 4×5 factorial arrangement with three mycorrhizal fungi inocula - Gigaspora margarita, Glomus etunicatum, or a pool of native mycorrhizal fungi (Acaulospora longula, Glomus clarum, Gigaspora albida, Paraglomus sp.) -, and a nonmycorrhizal control, in combination with five levels of phosphorus applied to the substrate: 0, 25, 50, 75, and 100 mg kg-1. After 180 days of growth, plantlets with inoculation of native mycorrhizal pool produced more shoot and root dry biomass and had higher shoot phosphorus content and accumulation. The noninoculated control showed the lowest values, independently of the phosphorus level. The highest relative mycorrhizal dependency occurred with the inoculation of native mycorrhizal fungi. Plants with mycorrhizal fungi did not respond to phosphorus addition above 50 mg kg-1. Mangaba tree is highly dependent on mycorrhiza, but the degree of dependency varies according to phosphorus levels and fungal inocula. In general, mangaba tree is more responsive to mycorrhizal fungi inoculation than to phosphorus addition.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000700013

Editor:

Embrapa Secretaria de Pesquisa e Desenvolvimento

Pesquisa Agropecuária Brasileira

Relação: | 10.1590/S0100-204X2008000700013
Formato: | text/html
Fonte: | Pesquisa Agropecuária Brasileira  v.43 n.7 2008
Fonte: | info:eu-repo/semantics/openAccess