Triazine carryover in semi-arid conditions

Chivinge, O.A.; Mpofu, B.

doi:10.1016/0261-2194(90)90132-q

Cited by 5 publications

(7 citation statements)

References 8 publications

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“…These authors pointed out that the herbicide injury on groundnuts was not reflected in crop yield. Although, different crop genotypes were used, some of the results obtained on groundnut in 2 out of the 3 seasons, when atrazine was applied at 1.75 kg ha -1 by Chivinge and Mpofu (1990) are closely similar to those obtained in soybean in this study, where atrazine residues did not cause any crop phytotoxicity. This study was under CA conditions, whereas those of Chivinge and Mpofu (1990) and Mushambi (1992) were under conventional tillage systems.…”

Section: Discussionsupporting

confidence: 57%

“…Working at a different site in Zimbabwe, Mushambi (1992) reported atrazine residues which ranged from 0.105 to 0.205 mg per kg of soil after seven and nine months, respectively after atrazine application in a maize crop. The fact that atrazine was sampled at 12 months (Chivinge & Mpofu, 1990) and 7 to 9 months (Mushambi, 1992), could partly explain the differences in atrazine concentration obtained by the authors. This could also account for the different atrazine residue responses of soybean and groundnut used in the above studies.…”

Section: Discussionmentioning

confidence: 83%

“…However, Chivinge and Mpofu (1990) found that when atrazine was applied in maize at 1.75 and 3.00 kg ha -1 it was slightly phytotoxic to groundnut in 1 out of 3 seasons and 2 out of 3 seasons, respectively. These authors pointed out that the herbicide injury on groundnuts was not reflected in crop yield.…”

Section: Discussionmentioning

confidence: 99%

“…There is a possibility that the two different tillage systems by the different researchers could explain the different results which were obtained. On the other hand, the variable atrazine residual effects on groundnut (Chivinge & Mpofu, 1990) could mean that these effects are complex to explain. Consequently, the results of this study do not guarantee that atrazine phytotoxicity is not likely to happen under CA.…”

Section: Discussionmentioning

confidence: 99%

“…This is more feasible, if the atrazine soil residues data is used together with the crop response for this purpose. However, Chivinge and Mpofu (1990) reported that atrazine residues range from 0.056 and 0.086 mg kg -1 in the course, acidic loamy soils at Henderson, 12 months after application. Working at a different site in Zimbabwe, Mushambi (1992) reported atrazine residues which ranged from 0.105 to 0.205 mg per kg of soil after seven and nine months, respectively after atrazine application in a maize crop.…”

Section: Discussionmentioning

confidence: 99%

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Does the Use of Atrazine in Maize Grown Under Conservation Agriculture Adversely Affect Soybean Productivity in Maize-Soyabean Rotation in Zimbabwe?

Muoni¹,

Rusinamhodzi²,

Mabasa³

et al. 2014

JAS

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Weed management challenges in the early years of conservation agriculture (CA) adoption may require the use of herbicides for farmers to realise the immediate benefits of CA practices. The objective of this study was to assess the effects of atrazine on soybean grown after maize in a maize-soybean rotation under conservation agriculture. Atrazine was applied at 1.8 kg ha -1 active ingredient (a.i), as a pre-emergence herbicide in the maize phase of the rotation. The study was conducted in Zimbabwe at Domboshawa Training Centre (DTC), Henderson Research Station (HRS) and University of Zimbabwe farm (UZ farm) over two seasons (2011/2012 and 2012/2013). Manual weeding was utilised to keep the study area weed free and eliminate interference from weeds. Weed density, weed biomass, soybean germination, soybean biomass and grain yield were measured. The lowest germination of soybean was recorded at 57% in 2011/2012 at DTC under atrazine + glyphosate + metolachlor in combination with manual weeding treatment. Previous atrazine treatment to maize showed no significant differences on soybean biomass accumulation and broadleaf weed density at all sites in both seasons. The highest soybean yields recorded were 3707 kg ha -1 at DTC in 2011/12 season in atrazine + glyphosate + metolachlor plus manual weeding treatment. Based on results obtained in this study it can be concluded that soybean can be grown in plots where atrazine was applied as a pre-emergent herbicide during the maize phase.

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Section: Discussionsupporting

confidence: 57%

Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

Does the Use of Atrazine in Maize Grown Under Conservation Agriculture Adversely Affect Soybean Productivity in Maize-Soyabean Rotation in Zimbabwe?

Muoni¹,

Rusinamhodzi²,

Mabasa³

et al. 2014

JAS

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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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Soil Movement and Persistence of Triazine Herbicides

Koskinen

2008

The Triazine Herbicides

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Triazine carryover in semi-arid conditions

Cited by 5 publications

References 8 publications

Does the Use of Atrazine in Maize Grown Under Conservation Agriculture Adversely Affect Soybean Productivity in Maize-Soyabean Rotation in Zimbabwe?

Does the Use of Atrazine in Maize Grown Under Conservation Agriculture Adversely Affect Soybean Productivity in Maize-Soyabean Rotation in Zimbabwe?

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

Soil Movement and Persistence of Triazine Herbicides

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