Plant growth and phosphorus uptake of coffee seedlings through mycorrhizal inoculation
| Autor: | Hernán González-Osorio, Carmenza Esther Góngora Botero, Sandra Patricia Jaramillo Padilla, Walter Osorio |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Agronomía Colombiana, Vol 40, Iss 1 (2022) |
| Druh dokumentu: | article |
| ISSN: | 0120-9965 2357-3732 |
| DOI: | 10.15446/agron.colomb.v40n1.98599 |
| Popis: | Soil phosphorus (P) availability is a limiting factor for coffee seedling growth. Usually, large amounts of P fertilizers are required, generating nutritional imbalance, increasing production costs, and raising environmental concerns in water pollution. The use of arbuscular mycorrhizal fungi (AMF) can enhance plant P uptake and growth and reduce the dose of P fertilizers. A greenhouse experiment was conducted in a substrate containing Paleudult soil and quartz sand, with low level of soluble P (1 mg kg-1), to establish the effect of AMF inoculation with Rhizoglomus fasciculatum on coffee (Coffea arabica L. cv. Colombia) seedlings growth and P uptake under three levels of P in soil solution (0.002, 0.02, and 0.2 mg L-1). AMF colonization was significantly reduced when contents of P in solution increased. Shoot dry weight and P foliar concentration were increased by the AMF inoculation when soil P in solution was 0.02 mg L-1; these effects were lower at 0.2 mg L-1 and null at 0.002 mg L-1 P. Results showed that AMF inoculation can play an important role in the growth of coffee seedlings as long as the content P in soil solution maintains intermediate level. At the lowest P level, the response of coffee seedlings to AMF inoculation was ineffective, while at the highest level, AMF application was unnecessary for coffee growth. |
| Databáze: | Directory of Open Access Journals |
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