Rapid diagnosis of resistance to imidazolinone herbicides in barnyardgrass (Echinochloa crus-galli) and control of resistant biotypes with alternative herbicides

Matzenbacher, F.O.; Kalsing, Augusto; Menezes, Valmir Gaedke; Barcelos, J.A.N.; Merotto, Aldo

doi:10.1590/s0100-83582013000300016

Cited by 19 publications

(22 citation statements)

References 19 publications

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“…The association of imazapyr + imazapic with quinclorac was synergistic when evaluated in the population of resistant biotypes (Table 4) and antagonistic when assessed in susceptible biotypes (Table 6). However, in several fields of rice in southern Brazil there are barnyardgrass biotypes resistant to herbicide quinclorac (Matzenbacher et al, 2013) and this problem limit the use of quinclorac for the control of biotypes with resistance to imidazolinone herbicides. In addition, biotypes with multiple resistance to these herbicides are already present in southern Brazil (Matzenbacher et al, 2013).…”

Section: Resultsmentioning

confidence: 99%

“…The experiment was conducted in a rice field infested with barnyardgrass resistant to imidazolinone herbicides located in Palmares do Sul (RS) (Matzenbacher et al, 2013) in a dystrophic solodic Typical Planosol (Streck et al, 2010). The barnyardgrass density quantified in the untreated check plots was of 480 plants m -2 .…”

Section: First Experiments -Barnyardgrass Resistant To Imidazolinone Hmentioning

confidence: 99%

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ANTAGONISM IS THE PREDOMINANT EFFECT OF HERBICIDE MIXTURES USED FOR IMIDAZOLINONE-RESISTANT BARNYARDGRASS (Echinochloa crus-galli) CONTROL

Matzenbacher¹,

Kalsing²,

Dalazen

et al. 2015

Planta daninha

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-Herbicides mixtures are used in many situations without the adequate knowledge related with the effect on major target weeds. The objective of this study was to evaluate the effects of different herbicides mixtures used in irrigated rice in order to establish the adequate combinations for the prevention and management of herbicide resistance in barnyardgrass (Echinochloa crus-galli). Three experiments were performed at field conditions with all major post-emergent herbicides used in irrigated rice in Brazil. The first experiment was performed with barnyardgrass resistant to imidazolinone herbicides and herbicides applied at label rates. The second and third experiments were performed with barnyardgrass resistant and susceptible to imidazolinone herbicides applied at doses of 50 or 75% of the label rates. The occurrence of additive, synergistic and antagonistic effects was identified at 18, 18 and 64%, respectively, among the total of 50 different associations of herbicide and rates evaluated. In general, the mixture of ACCase inhibitors with ALS inhibitors, quinclorac, clomazone + propanil or thiobencarb resulted in antagonism. Sinergic mixtures were found in clomazone with propanil + thiobencarb, profoxydim with cyhalofop-butyl or clomazone, and quinclorac with imazapyr + imazapic, bispyribac-sodium or cyhalofop-butyl. The mixtures of quinclorac with profoxydim were antagonic. Rice grain yield varied according to the efficiency of weed control. Seveveral mixtures were effective for imidazolinone resistant barnyardgrass control.

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Section: Resultsmentioning

confidence: 99%

Section: First Experiments -Barnyardgrass Resistant To Imidazolinone Hmentioning

confidence: 99%

ANTAGONISM IS THE PREDOMINANT EFFECT OF HERBICIDE MIXTURES USED FOR IMIDAZOLINONE-RESISTANT BARNYARDGRASS (Echinochloa crus-galli) CONTROL

Matzenbacher¹,

Kalsing²,

Dalazen

et al. 2015

Planta daninha

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“…Over the last decade, in the southern region of Brazil, the constant use of imidazolinones on Clearfield ® rice has selected innumerous biotypes resistant to herbicides of this chemical group. This added up to the resistance of biotypes from the same species to the auxin-mimic quinclorac, with cases of multiple resistance as well, limiting the farmers' options for herbicides on controlling Echinochloa species on this region (ANDRES et al, 2007;MATZENBACHER et al, 2013).…”

Section: Resumo: Cyhalofop-butyl Destaca-se Dentre Os Herbicidas Usadmentioning

confidence: 99%

“…Fields were chosen based on the history usage of Clearfield ® rice varieties, as well as imidazolinones herbicides, and ripe seeds were always collected in bulk from at least 25 plants. Plants were established using the method described by MATZENBACHER et al (2013), and have grown over air temperature of 28±2°C and photoperiod of 12 hours (light/dark).…”

Section: Vegetal Materialsmentioning

confidence: 99%

Susceptibility of Echinochloa populations to cyhalofop-butyl in Southern region of Brazil and impact of the weed phenology on its efficacy of control

Kalsing¹,

Tronquini²,

Mariot³

et al. 2017

Cienc. Rural

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Cyhalofop-butyl stands out among the herbicides in the control of imidazolinone-resistant Echinochloa species; but, rice farmers are not always satisfied with the control achieved with this herbicide. The objectives were to evaluate in regional scale the susceptibility of Echinochloa populations to cyhalofop-butyl, and quantify the effect of the weed phenology on its efficacy of control. For this, three trials were carried out under greenhouse conditions with a fully random design, using Echinochloa populations collected in rice fields in the southern region of Brazil. In two trials, the susceptibility level of 156 (2012/13 growth season) and 103 (2013/14 growth season) populations were evaluated with the application of cyhalofop-butyl at 360g ha-1. In other trial, in which treatments were arranged in a bi-factorial design (A = 6 x B = 5), it was evaluated six cyhalofop-butyl rates and five phenological stages of E. crus-galli populations. Echinochloa populations had showed differential susceptibility to cyhalofop-butyl, especially in the 2013/14 growth season, where 20 out of the 103 populations had control lower than 90%. The efficacy of this herbicide was inversely proportional to the phenological stage, and the application timing delay contributed directly to the decrease of susceptibility to the herbicide. Cyhalofop-butyl is an effective alternative to control imidazolinone-resistant Echinochloa populations, as long as the application timing occurs in the early phenological stages (2 to 4 leaves).

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“…and sedges (Cyperus spp.) (Galon et al, 2008;Roso et al, 2010;Matzenbacher et al, 2013;Schaedler et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Physical Properties and Crop Management for Corn in an Albaqualf

Giacomeli

Marchesan

Oliveira

et al. 2017

Rev. Bras. Ciênc. Solo

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Rice monoculture in lowlands can cause problems for management practices in crop fields, for example, in weed control. For this reason, corn in rotation with irrigated rice in lowlands may be advantageous, despite problems with soil compaction and water excess. The objective of this study was to evaluate soil physical properties and corn performance in soil management systems in an Albaqualf soil (lowlands). Two experiments were conducted in the field, in the 2013/14 and 2014/15 crop seasons. The experimental design was randomized blocks with two factors. There were three levels for the first factor, consisting of soil management practices: soil chiseling 45 days before sowing to a depth of 0.3 m; conventional tillage with two diskings to a depth of 0.1 m and subsequent leveling of the soil; and no-till. The second factor was composed of two levels: sowing on raised seedbeds, and without raised seedbeds. The soil parameters of bulk density, total porosity, macroporosity, microporosity, volumetric moisture, and soil resistance to mechanical penetration (RP) were evaluated. The corn parameters were plant height, shoot dry matter, leaf area, height of the first ear of corn, grains per ear, and grain yield. Soil chiseling resulted in lower RP and higher macroporosity in the 0.1-0.2 and 0.2-0.3 m layers. In raised seedbeds, the 0.00-0.05, 0.05-0.10, and 0.10-0.20 m layers were lower in RP and bulk density. Moreover, higher soil macroporosity was observed in relation to the treatment without raised seedbeds. In general, the highest grain yields were found in the treatments with lower RP and higher macroporosity in the root system region. Increased porosity accelerated water drainage in the soil, reducing the time that soil airspace was filled with water, which is a limiting factor for root development. In Albaqualf soils, planting corn in chiseled soil provides higher corn yields compared to conventional tillage, and planting corn on raised seedbeds provides higher corn yields compared to the lack of raised seedbeds.

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Rapid diagnosis of resistance to imidazolinone herbicides in barnyardgrass (Echinochloa crus-galli) and control of resistant biotypes with alternative herbicides

Cited by 19 publications

References 19 publications

ANTAGONISM IS THE PREDOMINANT EFFECT OF HERBICIDE MIXTURES USED FOR IMIDAZOLINONE-RESISTANT BARNYARDGRASS (Echinochloa crus-galli) CONTROL

ANTAGONISM IS THE PREDOMINANT EFFECT OF HERBICIDE MIXTURES USED FOR IMIDAZOLINONE-RESISTANT BARNYARDGRASS (Echinochloa crus-galli) CONTROL

Susceptibility of Echinochloa populations to cyhalofop-butyl in Southern region of Brazil and impact of the weed phenology on its efficacy of control

Physical Properties and Crop Management for Corn in an Albaqualf

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