Can the application of low doses of paraquat induce the hormesis effect in upland rice?
| Autor: | Samuel Ferrari, Luis Fernando dos Santos Cordeiro, Luís Guilherme Delovo Carara, Evandro Pereira Prado, Dumon Ramiro Zanetti Godoy, Matheus Luís Oliveira Cunha, Lara Caroline Alves de Oliveira, Lucas Aparecido Manzani Lisboa |
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| Přispěvatelé: | Universidade Estadual Paulista (UNESP) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2022-05-01T09:31:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-01-01 This study aimed to verify the effects of the application of paraquat low doses on the agronomic traits of upland rice in two different application modes. The treatments consisted of a combination of 6 low doses of the paraquat (0; 20; 40; 60; 80 and 120 g a.i. ha−1) and 2 application modes of low doses a) single application performed between active tillering and floral differentiation b) application split into four applications, the first being carried out at the beginning of active tillering, the second being carried out between active tillering and floral differentiation, the third application carried out after floral differentiation and the fourth application carried out after flowering with 25% of the dose in each application. The application of low doses of paraquat does not promote the hormesis effect of upland rice. The increase in the frequency of the plant to the herbicide caused by the splitting of applications negatively affected the plant height, number of spikelets per panicle, yield, leaf nitrogen and sulfur as the low doses levels were increased. On the other hand, there is no influence of paraquat low doses levels when single applied to the agronomic traits of upland rice. Department of Crop Production College of Agricultural and Technology Science São Paulo State University (UNESP) São Paulo State University (UNESP) College of Agricultural and Veterinary Sciences São Paulo State University (UNESP) Department of Crop Production College of Agricultural and Technology Science São Paulo State University (UNESP) São Paulo State University (UNESP) College of Agricultural and Veterinary Sciences São Paulo State University (UNESP) |
| Databáze: | OpenAIRE |
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