Persistence and mobility of 2,4-D in unsaturated soil zone under winter wheat crop in sub-tropical region of India

Gupta, Manika; Garg, Navneet; Joshi, Himanshu; Sharma, M.P.

doi:10.1016/j.agee.2011.10.009

Cited by 40 publications

(17 citation statements)

References 49 publications

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“…In this regard, the HYDRUS software make it possible to predict nematicide behavior, solving the Richards and advection-dispersion equations simultaneously by using variables from the soil system to which it is applied (Šimůnek et al, 2016). HYDRUS has been widely used, mainly for modeling water and chemical compounds; for example, leaching of water and nitrogen in sweet sorghum (Ramos et al, 2012), assessment of groundwater pollution risk, modeling ammonia-nitrogen as indicator (Li et al, 2015), assessment of persistence and movement of pesticides in soils (Gupta et al, 2012;Köhne et al, 2006) among others. Yet little work has been done related to nematicide movement (ex: López-Pérez et al, 2006), particularly with biological actives.…”

Section: Introductionmentioning

confidence: 99%

Assesing the vertical movement of a nematicide in a sandy loam soil and its correspondence using a numerical model (HYDRUS 1D)

Márquez

Faúndez

Aballay

et al. 2017

J. Soil Sci. Plant Nutr.

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A test under laboratory conditions was performed to typify and model the vertical movement of a nematicide (DiTera) applied at concentrations of 400, 700, and 1000 mg L -1 via drip irrigation to a sandy loam class soil confined in tanks of 1 m 3. Vacuum extractometers were set up in the tank at different depths to obtain samples of soil solution starting 10 cm away from the drip emitter. HPLC was used to measure the nematicide concentration in the soil solution. Later HYDRUS 1D was used to model the vertical nematicide concentration considering homogeneous soil. Soil hydraulic parameters were obtained from laboratory experiments whereas the dispersion length was obtained by inverse estimation matching measured and modeled data. Laboratory results showed no significant differences in vertical nematicide (distribution considered a fraction of the initial concentration), having a higher concentration at the surface and decreasing gradually with the depth. The predictive model was able to describe te nematicide behavior of the nematicide according to controlled test, obtaining a R 2 of 0.97, a RMSE of 67.41 mg L -1 , a RRMSE of 13.33% and a Nash of 0.92. These results confirm the proposed model;however, further studies on this issue are needed, considering different scenarios in laboratory conditions and thus scaling it up to field conditions.

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Section: Introductionmentioning

confidence: 99%

Assesing the vertical movement of a nematicide in a sandy loam soil and its correspondence using a numerical model (HYDRUS 1D)

Márquez

Faúndez

Aballay

et al. 2017

J. Soil Sci. Plant Nutr.

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“…For the same reason, the irrigation flow should be set at the fastest rate the soil could drain before producing any ponding. Other studies like Gupta et al (2012) also found essential to accurately plan the irrigation regime to control the transport of pesticides through the soil. Further, pre-wet practices should be avoided, and the most intense irrigation step possible should be applied in order to infiltrate the pesticides at the maximum extent.…”

Section: Analysis Of the Obtained Datamentioning

confidence: 98%

“…In light of these results and as claimed by Gupta et al (2012), the application dose and irrigation regime should be adjusted accordingly depending on the type of crop and the pest to be controlled (e.g., nematodes attacking root systems in almond trees or tomato plants) to assure a suitable concentration of both pesticides at the intended target soil depth to successfully hit the target (e.g., root) and fight the pest.…”

Section: Analysis Of the Obtained Datamentioning

confidence: 98%

Analysis of cinnamaldehyde and diallyl disulfide as eco-pesticides in soils of different textures—a laboratory-scale mobility study

López-Serna

Ernst

2015

J Soils Sediments

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Purpose This work presents for the first time the development of a method for the analysis of cinnamaldehyde and diallyl disulfide in soil by ultrasound assisted extraction followed by gas chromatography-mass spectrometry. The optimized method was applied in a laboratory-scale study of mobility of these substances applied within a bio-pesticide embodiment on three different soil textures, fine sand, sandy loam, and silty clay loam. Materials and methods Two initial soil moistures were approached, 20 and 90 % field capacity, in order to cover different climatic site scenarios (dry-wet locations). After the application, which was carried out as a pulse on the top soil surface, three different sprinkler irrigation regimes (1×, 2×, and 3× field capacity water volume) were simulated. Each experiment was carried out in duplicate. Results and discussionThe results have shown that irrigation pushes the compounds down, and their mobility is soil texture dependent, with the sandy loam having the least resistance to leachability. In any case, cinnamaldehyde is shown to be more prone to leach down than diallyl disulfide. Mass balances in each scenario were also discussed. Conclusions When these bio-pesticides are used for agricultural purposes, the irrigation regime should be adjusted so that the pesticides reach the target location without causing unnecessary environmental contamination.

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“…2,4-D is a common soil contaminant; as occurs with many soil pollutants, the 2,4-D concentrations found in contaminated soils depend on many factors such as weather, physicochemical properties of soil, soil microbiota, soil depth, time elapsed after 2,4-D application, irrigation, rainfall, and applied doses [20]. However, in studies made under real field conditions in Roorkee, India [20] and in soils near Tecolutla River in Veracruz, Mexico [21], the detected levels of 2,4-D varied from 0.3 to 0.11 mg/Kg, respectively.…”

Section: Introductionmentioning

confidence: 99%

Effect of propanil, linuron, and dicamba on the degradation kinetics of 2,4‐dichlorophenoxyacetic acid by Burkholderia sp. A study by differential analysis of 2,4‐dichlorophenoxyacetic acid degradation data

Dorado-Martínez

Ruiz‐Ordaz

Galíndez‐Mayer

et al. 2017

Engineering in Life Sciences

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The successive application of distinct pesticides, or mixtures of them, is a frequent practice that could adversely affect the microbial species inhabiting soil and aquatic ecosystems. The ability of soil or aquatic microbiota to degrade a pesticide could be affected by the presence of another. If the degradation rate of the first compound is inhibited, its dissipation half‐life in the environment could be hazardously enlarged. Few studies have been made to quantify the impact on the biodegradation rate of pesticides in soils or water by the presence of other pesticides. In this work, a method for assessing the effect of a pesticide on the biodegradation rate of another, measuring its effect on the biodegradation kinetics of a single bacterial strain is presented. The mathematical analysis is a powerful tool to study the stoichiometry and kinetics of microbial processes, which was used to evaluate independently, in detail, the effect of three pesticides (propanil, linuron, and dicamba) on the biodegradation kinetics of 2,4‐dichlorophenoxyacetic acid by a strain of Burkholderia sp. It was evidenced that linuron and dicamba caused a decay of more than 40% in the top instantaneous degradation rate of 2,4‐dichlorophenoxyacetic acid, while propanil showed a minimal effect.

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Persistence and mobility of 2,4-D in unsaturated soil zone under winter wheat crop in sub-tropical region of India

Cited by 40 publications

References 49 publications

Assesing the vertical movement of a nematicide in a sandy loam soil and its correspondence using a numerical model (HYDRUS 1D)

Assesing the vertical movement of a nematicide in a sandy loam soil and its correspondence using a numerical model (HYDRUS 1D)

Analysis of cinnamaldehyde and diallyl disulfide as eco-pesticides in soils of different textures—a laboratory-scale mobility study

Effect of propanil, linuron, and dicamba on the degradation kinetics of 2,4‐dichlorophenoxyacetic acid by Burkholderia sp. A study by differential analysis of 2,4‐dichlorophenoxyacetic acid degradation data

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