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| MARCHEZAN,M.G.; AVILA,L.A.; AGOSTINETTO,D.; SCHAEDLER,C.E.; LANGARO,A.C.; OLIVEIRA,C.; ZIMMER,M.; SCHREIBER,F.. |
| ABSTRACT Herbicide selectivity in paddy rice varies in several aspects, among which are the environmental conditions. The aim of the study was to evaluate the effect of herbicide application and total plant submersion on morphological and biochemical changes in paddy rice. Total chlorophyll and carotenoids, catalase activity, ascorbate peroxidase and superoxide dismutase, total phenolic content, lipid peroxidation and hydrogen peroxide levels were assessed. Leaf samples were collected 24 hours and 7 days after the application of water regimes. The results observed in the first experiment show that cultivars Puitá INTA CL, IRGA 417 and IRGA 422 CL are more tolerant to total submersion. The most sensitive cultivars are IRGA 424, BRS Querência, EPAGRI 108 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oxidative stress; Hypoxia; Oryza sativa; Herbicide selectivity. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100201 |
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| MARCHEZAN,M.G.; AVILA,L.A.; SCHAEDLER,C.E.; AMARANTE,L.; SCHERNER,A.; SCHREIBER,F.. |
| ABSTRACT: The maximum biological efficiency of a herbicide is performed when the plants are in favorable condition to absorb and metabolize it. Stress situations, such as total submersion, cause stress in plants, reducing weed control efficiency and crop yield. The objective of this study was to verify whether different soil water content and herbicide treatments alter the components of the secondary metabolism and cause cellular damage in weed species Two experiments were conducted (I and II) in a completely randomized experimental design with a factorial scheme (2 x 2 x 4 and 2 x 5, respectively) and three replicates. The first experiment was conducted with two species (Leersia hexandra and Luziola peruviana), which were submitted to four herbicide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Luziola peruviana; Leersia hexandra; Echinochloa crus-galli; Oxidative stress; Chemical control. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100288 |
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| CÓRDOVA,R.A.; TOMAZETTI,M.; REFATTI,J.P.; AGOSTINETTO,D.; AVILA,L.A.; CAMARGO,E.R.. |
| ABSTRACT: This study aimed to evaluate the potential for glyphosate drift during aerial application using rice plants as sentinels, aiming to determine the effect of drift on irrigated rice crops. For this purpose, a field experiment was performed using an entirely randomized design with four replicates, evaluating different distances from the site of application [control (no application), 0, 12.5, 25, 50, 75, 100, 150, 200, 300, and 400 m]. The experiment was carried out at the Granjas 4 Irmãos farm, located in the Rio Grande city, Rio Grande do Sul State, Brazil. The glyphosate dose application was 1,920 g e.a. ha-1 (Roundup Transorb®, 480 g e.a. L-1 glyphosate isopropylamine salt). A dose-response curve was developed to estimate the drift rate in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: EPSPs injury; Phytotoxicity; Productivity; Sub-doses. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100248 |
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| GEHRKE,V.R.; CAMARGO,E.R.; AVILA,L.A.. |
| ABSTRACT: Sulfentrazone is a pre-emergence herbicide that inhibits protoporphyrinogen oxidase (Protox). Its use has emphasis on areas like soybeans planted in lowlands, soybean, and sugarcane in areas of cerrado, and also in the implementation of eucalyptus afforestation. The use of sulfentrazone into resistant weed management programs mainly to glyphosate and acetolactate synthase (ALS) inhibitors has been successful. However, the information on the environmental behavior of this herbicide is limited, even more restricted when it refers to the lowland areas where problems are frequently observed regarding the selectivity of sulfentrazone, due to the soil and climatic peculiarities of this environment. In this context, the present review aims to describe... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Triazolinone; Pre-emergent; Weed management; Sorption. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100401 |
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