Temporal progress of teak rust in a tropical area of Tocantins State, Brazil
| Autor: | Gil Rodrigues dos Santos, Evelynne Urzêdo Leão, Nathana Izabela Silva Sales, Chrystian de Assis Siqueira, Lucas Caius Moreira do Amaral Correia |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Veterinary medicine Science (General) Incidence (epidemiology) Olivea neotectonae Gompertz function Climatic variables food and beverages 04 agricultural and veterinary sciences Biology biology.organism_classification 01 natural sciences Rust Q1-390 040103 agronomy & agriculture Olivea Tectona grandis 0401 agriculture forestry and fisheries epidemiology Disease progress Negative correlation General Agricultural and Biological Sciences 010606 plant biology & botany |
| Zdroj: | Acta Amazonica, Vol 47, Iss 3, Pp 277-280 (2017) |
| ISSN: | 0044-5967 |
| Popis: | Rust, caused by Olivea neotectonae, stands out as the main teak disease, causing premature defoliation regardless of the tree’s growth stage. In this study, we aimed to assess the temporal progress of rust in adult teak plants in southern Tocantins State (Brazil). Both rust incidence and severity were evaluated and the disease progress curves were obtained, adjusting to monomolecular, logistic and Gompertz mathematical models. Data from incidence and severity were correlated with climate variables collected by the agrometeorological station located in the study area. Rust incidence reached 100% at 98 days after beginning of the evaluations (DBE). The highest severity (equal or above 75%) was observed at 147 DBE. There was a significant and negative correlation between severity and minimum temperature. The adjustment of the Gompertz model suggests that control measures should be aimed primarily to reduce the rate of disease progress. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|