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Eficiência de fungicidas aplicados em sementes de arroz visando o controle da Brusone (Magnaporthe grisea)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Zemolin, Carla Rejane Gulart, Caroline Almeida Lenz, Giuvan Bayer, Tânia Costa, Ivan Francisco Dresler Da |
| Copyright Year | 2007 |
| Abstract | Com o objetivo de avaliar a eficiencia agronomica dos fungicidas Triciclazol, Piroquilona e Carboxina + Tiram, em tratamento de sementes, visando o controle do fungo Magnaporthe grisea, foi instalado o experimento no delineamento experimental inteiramente casualizado com nove tratamentos e oito repeticoes, utilizando a cultivar El Paso 144. Os parâmetros utilizados na avaliacao foram o numero de sementes com sintomas de ataque da doenca. O efeito do tratamento de sementes sobre a cultivar El Paso 144 permitem concluir que todos os fungicidas testados para o controle de M. grisea mostraram eficiencia de controle entre 88,55% e 97,59% em relacao a testemunha. O melhor tratamento foi Piroquilona na dosagem de 400 g de i.a.100 Kg–1 de sementes, com eficiencia de 97,59%, seguido de Triciclazol nas dosagens de 187,5 e 225 g de i.a.100 Kg–1 de sementes com eficiencia de 95,18% e 95,8% respectivamente. Palavras-chaves: Oryza sativa, fungicida, tratamento de sementes. ABSTRACT With the objective to evaluate the agronomical efficiency of fungicides Tricyclazole, Pyroquilon and Carboxin + Thiram, in seeds treatment, for the control of rice blast (Magnaporthe grisea), was installed an experiment with nine treatments and eight repetitions with El Paso 144. The parameters used in the evaluation had been the number of seeds with symptoms of attack of the illness. The effect of the treatment of seeds on cv. El Paso 144 had allowed to conclude that all the fungicides tested for the control of M. grisea had shown efficiency between 88,55% and 97,59%, in relation the control. The best treatment was Pyroquilon in the dosage of 400g a.i.100kg-1 of seeds, with 97,59% efficiency, followed of Tricyclazol in the dosages of 187,5 and 225g a.i.100-1 of seeds, with efficiency of 95,18% and 95,8%, respectively. Key Words: Oryza sativa, fungicide, seed treatment. |
| File Format | PDF HTM / HTML |
| Volume Number | 14 |
| Alternate Webpage(s) | http://revistaseletronicas.pucrs.br/ojs/index.php/fzva/article/download/2480/1939 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
