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| Agostinetto,Dirceu; Vargas,Andrés Antonio Monge; Ruchel,Queli; Silva,Jéssica Dias Gomes da; Vargas,Leandro. |
| ABSTRACT: In Brazil, horseweed is one of the most important weeds because of the resistance to herbicides and high competitive for the crops. A large of losses were reported in major crops such as soybeans, wheat and corn, where the use a no-tillage system and the herbicide resistance promote better establishment. A correct understanding of the way temperature influences germination enables the prediction of the regions with the highest potential for colonization by this weed and thus facilitates its control. The objective of this study; therefore, was to discern the ways temperature affected the germination, viability and longevity of horseweed seeds. Testing was done at 10, 20 and 30°C, while evaluation occurred on days 0, 15, 30, 45 and 60. Seeds were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Secondary dormancy; Depth; Management; Seed quality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000900202 |
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| Langaro,Ana Claudia; Agostinetto,Dirceu; Ruchel,Queli; Garcia,Jessica Rodrigues; Perboni,Lais Tessari. |
| ABSTRACT Among the methods of weed control, stands out chemical control. However, even selective, herbicides can trigger the production of reactive species of oxygen and cause oxidative stress. The aim of the study was to evaluate changes in photosynthetic parameters, oxidative damage, antioxidant enzyme activity and altered metabolism of rice plants after applying pre-emergent herbicides. The experiment was conducted in a greenhouse and herbicides used were oxadiazon, pendimethalin and oxyfluorfen, beyond the control without herbicide. There was a reduction of photosynthetic rate and efficiency of carboxylation, compared to the control, when applied herbicides oxyfluorfen and pendimethalin. The major lipid peroxidation and proline accumulation was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Antioxidant system; Chemical control; Reactive oxygen species; Selectivity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000200358 |
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