Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, Brazil
ABSTRACT: The resistance of Echinochloa crus-galli (barnyardgrass) to cyhalofop-p-butyl has already been confirmed in rice fields in Santa Catarina, Brazil. However, it is not known if this resistance affects other ACCase inhibitors. This study evaluated the occurrence of cross-resistance in Echinoc...
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| Format: | Article |
| Language: | English |
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Universidade Federal de Santa Maria
2023-08-01
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| Series: | Ciência Rural |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782024000200151&lng=en&tlng=en |
| _version_ | 1797739624393605120 |
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| author | Mayra Luiza Schelter Marissa Prá de Souza Lariane Fontana de Freitas Naiara Guerra Antonio Mendes de Oliveira Neto |
| author_facet | Mayra Luiza Schelter Marissa Prá de Souza Lariane Fontana de Freitas Naiara Guerra Antonio Mendes de Oliveira Neto |
| author_sort | Mayra Luiza Schelter |
| collection | DOAJ |
| description | ABSTRACT: The resistance of Echinochloa crus-galli (barnyardgrass) to cyhalofop-p-butyl has already been confirmed in rice fields in Santa Catarina, Brazil. However, it is not known if this resistance affects other ACCase inhibitors. This study evaluated the occurrence of cross-resistance in Echinochloa crus-galli biotypes from the main rice-growing regions of Santa Catarina to ACCase inhibitors. The research was conducted in a greenhouse, using a completely randomized design with a factorial scheme that included three ACCase-inhibiting herbicides (cyhalofop-p-butyl, quizalofop-p-ethyl, and profoxydim) belonging to two chemical groups (aryl-oxifenoxi-propionates and cyclohexanediones), eight herbicide doses, and four biotypes evaluated in the F1 generation and two biotypes evaluated in the F2 generation. These biotypes were selected based on the results of a preliminary trial with 21 populations. The herbicides were applied when the plants presented two true leaves. After control evaluations, the lethal dose required to control 50% and 80% of the population (LD50 and LD80) and the resistance factor (RF) were determined by nonlinear regression. The results showed that only one biotype from Tubarão, Santa Catarina met all statistical and agronomic criteria and had cross-resistance to ACCase inhibitors confirmed. In both generations, the RF was greater than 1.0, and the dose required to achieve 80% control exceeded the maximum recommended dose on the label. Resistance levels were higher for herbicides belonging to the aryl-oxifenoxi-propionate chemical group, with RF greater than 7.0. For the cyclohexanedione chemical group, the RF was less than 5.0. |
| first_indexed | 2024-03-12T13:59:54Z |
| format | Article |
| id | doaj.art-855de1994c304f32aa150ded3fdec154 |
| institution | Directory Open Access Journal |
| issn | 1678-4596 |
| language | English |
| last_indexed | 2024-03-12T13:59:54Z |
| publishDate | 2023-08-01 |
| publisher | Universidade Federal de Santa Maria |
| record_format | Article |
| series | Ciência Rural |
| spelling | doaj.art-855de1994c304f32aa150ded3fdec1542023-08-22T07:43:12ZengUniversidade Federal de Santa MariaCiência Rural1678-45962023-08-0154210.1590/0103-8478cr20220384Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, BrazilMayra Luiza Schelterhttps://orcid.org/0000-0001-5319-3414Marissa Prá de Souzahttps://orcid.org/0000-0002-4832-849XLariane Fontana de Freitashttps://orcid.org/0000-0003-0812-5740Naiara Guerrahttps://orcid.org/0000-0002-4215-3027Antonio Mendes de Oliveira Netohttps://orcid.org/0000-0002-4616-5594ABSTRACT: The resistance of Echinochloa crus-galli (barnyardgrass) to cyhalofop-p-butyl has already been confirmed in rice fields in Santa Catarina, Brazil. However, it is not known if this resistance affects other ACCase inhibitors. This study evaluated the occurrence of cross-resistance in Echinochloa crus-galli biotypes from the main rice-growing regions of Santa Catarina to ACCase inhibitors. The research was conducted in a greenhouse, using a completely randomized design with a factorial scheme that included three ACCase-inhibiting herbicides (cyhalofop-p-butyl, quizalofop-p-ethyl, and profoxydim) belonging to two chemical groups (aryl-oxifenoxi-propionates and cyclohexanediones), eight herbicide doses, and four biotypes evaluated in the F1 generation and two biotypes evaluated in the F2 generation. These biotypes were selected based on the results of a preliminary trial with 21 populations. The herbicides were applied when the plants presented two true leaves. After control evaluations, the lethal dose required to control 50% and 80% of the population (LD50 and LD80) and the resistance factor (RF) were determined by nonlinear regression. The results showed that only one biotype from Tubarão, Santa Catarina met all statistical and agronomic criteria and had cross-resistance to ACCase inhibitors confirmed. In both generations, the RF was greater than 1.0, and the dose required to achieve 80% control exceeded the maximum recommended dose on the label. Resistance levels were higher for herbicides belonging to the aryl-oxifenoxi-propionate chemical group, with RF greater than 7.0. For the cyclohexanedione chemical group, the RF was less than 5.0.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782024000200151&lng=en&tlng=enaryloxyphenoxypropionatescyclohexanedioneswhole-plant experimentEchinochloa crus-galli |
| spellingShingle | Mayra Luiza Schelter Marissa Prá de Souza Lariane Fontana de Freitas Naiara Guerra Antonio Mendes de Oliveira Neto Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, Brazil Ciência Rural aryloxyphenoxypropionates cyclohexanediones whole-plant experiment Echinochloa crus-galli |
| title | Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, Brazil |
| title_full | Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, Brazil |
| title_fullStr | Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, Brazil |
| title_full_unstemmed | Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, Brazil |
| title_short | Resistance of barnyardgrass biotypes (Echinochloa crus-galli) to ACCase-inhibiting herbicides in the main rice-growing regions of the state of Santa Catarina, Brazil |
| title_sort | resistance of barnyardgrass biotypes echinochloa crus galli to accase inhibiting herbicides in the main rice growing regions of the state of santa catarina brazil |
| topic | aryloxyphenoxypropionates cyclohexanediones whole-plant experiment Echinochloa crus-galli |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782024000200151&lng=en&tlng=en |
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