Variable tolerance of some crop species to atrazine in various soils

Reinhardt, C. F.; Nel, P. C.

doi:10.1080/02571862.1993.10634668

Cited by 4 publications

(5 citation statements)

References 12 publications

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“…Higher atrazine effective concentration values in soils with higher OM content can be attributed to decreased soil-bioavailability resulting from atrazine adsorption to OM through ionic bonding. This is consistent with previous research that reports the binding of many synthetic herbicides to soil OM (Knezevic et al, 2009;Reinhardt & Nel, 1993). In a growth chamber experiment conducted to observe the effect of simulated atrazine carryover, Frank et al (1983) observed plant death in sandy loam soil with 1% OM at 0.3 mg kg −1 atrazine and in loam soil with 3.5% OM at 0.5 mg kg −1 atrazine, and no plant death in loam with 10% OM at added atrazine up to 0.7 mg kg −1 .…”

Section: Atrazine Bioavailabilitysupporting

confidence: 93%

Characterizing atrazine, mesosulfuron‐methyl, and topramezone bioavailability in North Carolina soils using greenhouse bioassays

Ramanathan

Gannon

Locke

et al. 2023

Agrosystems Geosci & Env

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Herbicide carryover injury to rotational crops can vary in severity depending on the influence of soil properties on herbicide bioavailability. Greenhouse bioassays were conducted with soybean, radish, and canola to evaluate differences in the bioavailability of three herbicides with carryover risk, atrazine, mesosulfuron‐methyl, and topramezone. Bioassays were conducted in three varying regional soil types with nine herbicide treatment rates including a control. Plant visual injury was evaluated weekly, and aboveground dry biomass was weighed after harvest of soybean 28 days after emergence (DAE) and radish and canola 21 DAE. A log‐logistic dose–response regression model was used to quantify herbicide‐effective concentrations for 30% (EC30), 50% (EC50), and 80% (EC80) visual injury and aboveground dry biomass reduction in each soil type. Relative herbicide‐soil bioavailability was determined through comparisons of herbicide‐effective concentrations among soil types. Pearson correlation revealed that atrazine, mesosulfuron‐methyl, and topramezone EC30 for all species were positively correlated to soil organic matter (OM) content (r = 0.56, 0.48, and 0.40, respectively) and cation exchange capacity (CEC) (r = 0.43, 0.41, and 0.45). Topramezone EC80 for soybean and radish was positively correlated to soil clay content (r = 0.51) and silt content (r = 0.51) and negatively correlated to sand content (r = −0.51) and pH (r = −0.52). Decreased atrazine, mesosulfuron‐methyl, and topramezone bioavailability in soil with high OM and CEC, decreased topramezone bioavailability in coarse‐textured soil and at high soil pH, and differential herbicide sensitivity of crop species can inform grower decisions on herbicide selections and rotational crop plans.

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Section: Atrazine Bioavailabilitysupporting

confidence: 93%

Characterizing atrazine, mesosulfuron‐methyl, and topramezone bioavailability in North Carolina soils using greenhouse bioassays

Ramanathan

Gannon

Locke

et al. 2023

Agrosystems Geosci & Env

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“…In contrast, sunflower suffered considerably more damage in terms of yield than dry beans at most of the trial sites at that stage after atrazine application. These results confirm the difference in susceptibility to atrazine that was demonstrated for the same dry bean and sunflower cultivars in a glasshouse study (Reinhardt & Nel, 1993a). Atrazine persisted longest in the Warm baths soil (35% total clay -80% montmorillonite; 0.5% C; pH 7.8).…”

Section: Resultssupporting

confidence: 78%

“…Results of a previous study (Reinhardt & Nel, 1993a) suggested that the availability of atrazine is different for uptake in different soils and could explain the variation from one soil to another of damage caused to a particular sensitive crop. Ways have to be found whereby the persistence of atrazine can be predicted, based on key environmental variables that determine its dissipation rate.…”

Section: Introductionmentioning

confidence: 99%

Residual effect of atrazine on field-grown dry beans and sunflower

Reinhardt

1995

South African Journal of Plant and Soil

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The applicability of fixed recropping intervals for crops that are sensitive to atrazine (2-chloro-4-ethylamino-6-isopropylamino-1 ,3,5-s-triazine) was assessed. Atrazine carry-over was monitored 12 and 24 months after its application at six different rates to maize (Zea mays L.) grown in eight trials at six sites. The rotational test species were dry beans (Phaseo/us vulgaris L. cv. Teebus) and sunflower (He/ianthus annuus L. cv. SO 222). Yield reductions indicated the carry-over of phytotoxic atrazine residues. At 12 months after treatment dry bean yield was significantly reduced at one site and sunflower yield at six, on plots previously treated with the atrazine rates recommended for maize. During the next season significant yield reductions (dry beans 38%; sunflower 29%) occurred only on the single montmorillonite soil (pH 7.8). The relatively high tolerance of the dry bean cultivar in most soils at the first assessment is not reflected in the single recropping period of 18 months that is currently recommended for both species. Current recropping intervals for sensitive crops could be refined by assigning flexible intervals that are based on the herbicide's expected dissipation rate in a particular soil, as well as on the tolerance of the follow-up crop.Die toepaslikheid van rigiede wagperiodes wat vir gewassoorte met lae verdraagsaamheid teenoor atrasien (2-chloor-4-etielamino-6-isopropielamino-1 ,3,5-s-triasien) aanbeveel word, is ondersoek. Oordraging van atrasien is op 12 en 24 maande na toediening daarvan in mielies (Zea mays L.), in agt proewe by ses lokaliteite, gemonitor deur die opbrengs van twee opvolggewasse, droebone (Phaseo/us vulgaris L. cv. Teebus) en sonneblom (He/ianthus annuus L. cv. SO 222), te bepaal. Opbrengsverliese by hierdie gewasse het oordraging van atrasien aangedui. Twaalf maande na toediening van die aanbevole atrasienpeile in mielies is droebone in daardie persele betekenisvol beskadig by een lokaliteit, en sonneblom by ses. In die daaropvolgende seisoen is die opbrengs van be ide gewasse alleenlik verlaag (droebone 38%; sonneblom 29%) op die enigste montmorillonietgrond (pH 7.8). Die relatief hoe verdraagsaamheid wat die droebooncultivar by die eerste monitering daarvan vertoon het, word nie in die wagperiode (18 maande) wat tans vir beide gewasse gestel word, weerspieel nie. Die rigiede wagperiodes wat tans geld, kan verfyn word deur die gebruik van buigsame intervalle wat gebaseer is op die verwagte tempo van verlies van atrasien in 'n bepaalde grond, asook op die verdraagsaamheid van die opvolggewas.

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“…Segundo Rodrigues & Almeida (1998), doses recomendadas de atrazine podem persistir por períodos de cinco a sete meses em condições tropicais e subtropicais. Entretanto, a concentração total do resíduo do produto no solo, em determinada época, não significa que essa quantidade esteja totalmente disponível e capaz de prejudicar os cultivos em sucessão (Reinhardt & Nel, 1993). Delmonte et al (1996) avaliaram a persistência do atrazine por meio de bioensaios com aveia em três tipos de solos da região de Buenos Aires.…”

Section: Resultsunclassified

“…A disponibilidade dos resíduos de atrazine é diferente de solo para solo e pode explicar a variação de danos causados em cultivos sensí-veis (Reinhardt & Nel, 1993). Solos mais argilosos e/ou com maiores teores de matéria orgânica podem favorecer a persistência desse produto.…”

Section: Resultsunclassified

Persistência e fitotoxicidade do herbicida atrazine aplicado na cultura do milho sobre a cultura do girassol em sucessão

Brighenti

Moraes²,

Oliveira

et al. 2002

Planta daninha

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Embora o herbicida atrazine aplicado na cultura do milho seja seletivo para esta cultura, pode causar fitotoxicidade em cultivos em sucessão/rotação. Dois experimentos foram conduzidos em campo, a fim de avaliar o efeito residual do herbicida atrazine aplicado na cultura do milho sobre a cultura do girassol em sucessão. Um deles foi conduzido no município de Montividiu-GO e o outro em Londrina-PR. O delineamento experimental foi o de blocos casualizados em parcelas subdivididas. Intervalos entre a aplicação do herbicida atrazine na cultura do milho e a semeadura da cultura do girassol foram dispostos nas parcelas, e as doses de atrazine aplicadas na cultura do milho, nas subparcelas. Em Montividiu, o girassol foi semeado aos 90, 116 e 128 dias após a aplicação (DAA) das doses de 0 (testemunha sem aplicação), 1,5 e 2,5 kg ha-1 de atrazine. Em Londrina, o girassol foi semeado aos 60, 90 e 120 DAA das doses de 0 (testemunha sem aplicação), 3,0 e 6,0 kg ha-1 de atrazine. A produtividade da cultura do girassol sofreu reduções significativas, em função dos resíduos de atrazine na semeadura realizada aos 60 dias após a aplicação das doses de 3,0 e 6,0 kg ha-1. Nenhuma das características avaliadas na cultura do girassol foi afetada significativamente pelos resíduos do herbicida quando a semeadura foi realizada aos 90, 116, 120 e 128 dias após a aplicação das doses de atrazine na cultura do milho em ambos os locais estudados.

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Variable tolerance of some crop species to atrazine in various soils

Cited by 4 publications

References 12 publications

Characterizing atrazine, mesosulfuron‐methyl, and topramezone bioavailability in North Carolina soils using greenhouse bioassays

Characterizing atrazine, mesosulfuron‐methyl, and topramezone bioavailability in North Carolina soils using greenhouse bioassays

Residual effect of atrazine on field-grown dry beans and sunflower

Persistência e fitotoxicidade do herbicida atrazine aplicado na cultura do milho sobre a cultura do girassol em sucessão

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