| Full text | |
| Author(s): |
Total Authors: 3
|
| Affiliation: | [1] UFAL. CECA. Departamento de Agronomia
[2] USP. ESALQ. Departamento de Solos e Nutrição de Plantas
[3] USP. ESALQ. Departamento de Solos e Nutrição de Plantas
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | Revista Brasileira de Ciência do Solo; v. 23, n. 4, p. 807-815, 1999-12-00. |
| Abstract | |
The objective of this experiment was to quantify the extramatrical mycelium of the arbuscular mycorrhizal (AM) fungus Glomus etunicatum (Becker & Gerdemann) grown on maize (Zea mays L. var. Piranão) provided with various levels of phosphate fertilizer and harvested at 30, 60 and 90 days after planting (DAP). Total extramatrical mycelium (TEM) was extracted from soil using a modified membrane filtration method, followed by quantification using a grid intersection technique. Active extramatrical mycelium (AEM) proportion was determined using an enzymatic method which measured dehydrogenase activity by following iodonitrotetrazolium reduction. At low levels of added P, there was relatively less TEM than at high levels of added P, but the AEM proportion at low soil P availability was significantly greater than at high soil P. (AU) | |
| FAPESP's process: | 96/11504-2 - Raymond S. Pacovsky | United States Department of Agriculture - Estados Unidos |
| Grantee: | Elke Jurandy Bran Nogueira Cardoso |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |