Record ID No. |
759 |
Author(s) |
Oliveira A. N., Oliveira, L. A. , 2004 |
Affiliation |
Universidade Federal do Amazonas - UFAM, INPA, Caixa Postal 478. CEP 69011-970 Manaus (AM), Brazil, E-mail: arlem@inpa.gov.br |
Title |
Arbuscular mycorrhizal association and foliar nutrient concentrations of cupuassu (Theobroma grandiflorum) and guarana (Paullinia cupana) plants in an agroforestry system in Manaus, AM, Brazil. |
Source. Vol.(no):Page |
Revista Brasileira de Ciencia do Solo. 28(6): 1063-1068p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Plantations |
Host |
cupuassu (Theobroma grandiflorum), guarana (Paullinia cupana) |
Organism |
Arbuscular Mycorrhiza (AM) |
Country |
Brazil, South America |
Abstracts |
Arbuscular mycorrhiza can be important for plant nutrition in acid and low fertility soils such as those of the Amazon. The present study evaluated the mycorrhizal colonization by native arbuscular mycorrhizal fungi (AMF) and nutrient concentrations of cupuassu (Theobroma grandiflorum) and guarana (Paullinia cupana) leaves in an agroforestry system in Manaus, Amazonas State, Brazil. Ten plants of each species were selected, of which the roots, soil and leaves were sampled during the rainy and dry seasons. Guarana and cupuassu trees presented higher levels of AMF colonization during the rainy season. Calcium, Mg, K, P, Zn, Cu, and Mn concentrations in both species were not affected by the season. Iron concentration was higher during the rainy season in the cupuassu leaves, but higher in the dry season in the guarana leaves. Mycorrhizal colonization correlated with Ca, Mg, P, and Cu concentrations in cupuassu plants and with Ca, Fe, Zn, and Cu in guarana plants. |