The effects of pesticide mixtures on degradation of pendimethalin in soils

Swarcewicz, Maria; Gregorczyk, A.

doi:10.1007/s10661-011-2172-x

Cited by 46 publications

(25 citation statements)

References 26 publications

(39 reference statements)

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“…For example, White et al (2010) found that fungicide chlorothalonil could significantly suppress the degradation of herbicide metolachlor in soil, and inhibition rate is up to two times. Swarcewicz and Gregorczyk (2012) demonstrated that fungicide mancozeb and mixture with thiamethoxam could significantly inhibit the degradation of herbicide pendimethalin, but metribuzin did not affect the behavior of pendimethalin in soil. Therefore, it is necessary to compare and analyze the behaviors of individual pesticides and combined use in soil.…”

Section: Introductionmentioning

confidence: 99%

“…However, in practice, different pesticides are usually applied simultaneously or one after another for protecting the crop from damage. This pesticide application can often result in a combined contamination of pesticide residues in the soil environment (Swarcewicz and Gregorczyk, 2012). Degradation and adsorption are two important behaviors of pesticides in soil, which are directly related to how long the pesticides remain in the soil and how seriously the pesticide affect soil environment (Arias-Estévez et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Degradation and adsorption of tebuconazole and tribenuron-methyl in wheat soil, alone and in combination

Wang

Zhi

Zhang

et al. 2017

Chilean J. Agric. Res.

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In practice, pesticides are usually simultaneously applied or one after another for crop protection. This often leads to a coexistence of pesticide mixtures in soil. One of the most important processes influencing the behavior of a pesticide in the environment is its degradation and adsorption in soil. Thus, the degradation and adsorption behaviors of tebuconazole (TEB) and tribenuron-methyl (TBM) alone and combined application in wheat soil (pH 7.28) were studied. The concentrations of TEB and TBM in soil were determined using a quick, easy, cheap, efficient, rugged and safe method (QuEChERS) with ultrahigh-performance liquid chromatography tandem mass spectrometry (UHPLC-MS/MS). Results showed that TEB has longer half-lives compared with TBM in the tested soils when they were applied individually. The degradation of TEB was markedly affected by concentration and soil microorganisms. In the non-sterilized soil, half-lives of 0.8 and 80 mg kg -1 TEB were 16.4 and 69.3 d, respectively, and half-lives of 0.8 and 80 mg kg -1 TEB were 20.4 and 73.5 d in the sterilized soil, respectively. The degradation of TBM was not affected by TEB in both soils; however, TBM could reduce the degradation of TEB. Compared to TEB alone, the rates of degradation of 80 mg kg -1 TEB in presence of 32 mg kg -1 TBM were reduced 15.9% and 18.2% in non-sterilized and sterilized soils, respectively. Soil adsorption affinity of TEB was significantly higher than TBM. When used combined, adsorption capacity of TEB was not affected by TBM. However, the adsorption of TBM was obviously inhibited in presence of TEB.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Degradation and adsorption of tebuconazole and tribenuron-methyl in wheat soil, alone and in combination

Wang

Zhi

Zhang

et al. 2017

Chilean J. Agric. Res.

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“…Affording lower amount of herbicide without diminishing efficiency, controlled release formulation has the advantage of being far safer to handle than other pesticide formulations. [25][26][27][28] To the best of our knowledge, selected herbicide model pendimethalin -a pre-emergence innately poisonous selective herbicide -has never been encapsulated before ever within dendritic PAMAM-based novel polyurea microcapsules possessing free reactive functional group. Objective set for the present work was to develop PAMAM-based novel polymeric shell material for efficient release rate of encapsulated core via micro encapsulation using interfacial polymerization technique.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of dendritic 0 G PAMAM-based novel polyurea microcapsules for encapsulation of herbicide and release rate from polymer shell in different environment

Hedaoo

Tatiya

Mahulikar

et al. 2013

Designed Monomers and Polymers

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New sequence of microcapsules with dendritic PAMAM-based novel polyurea as shell wall material containing herbicide as a core moiety has been prepared by interfacial polymerization technique. Dendrimer-based polymeric microcapsules were fabricated with aim to study the effect of different reaction parameters such as surfactant dose, core loading, agitation speed, and amount of solvent on particle size, particle size distribution, and appearance of microcapsules. Prepared microcapsules were characterized by FTIR, thermo gravimetric analysis, particle size analysis, scanning electron microscope, and other microscopic technique. In present investigation, surfactant dose of 2.5% with 5 mL of solvent at 400 rpm was found to be optimum for fabrication of stable new polyurea microcapsules containing 1 g of core. The synthesized microcapsules with optimized parameters were evaluated quantitatively for controlled release study by gas chromatography in different environmental conditions. The highest percent release of core was found in acidic conditions compared to that of basic and least in neutral medium.

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“…However, the potential interactions between herbicides when compared with the application of each herbicide alone were not fully investigated. Many interactions are possible, including those related to changes in the amount and species diversity of the microbial population from different soils, effects on the specific enzymatic reactions, or those related to physical and chemical effects, such as competition for sorption sites, which interfere directly with leaching [14,15].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

et al. 2017

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Herbicide leaching is influenced by soil physical and chemical properties as well as the prevailing climatic conditions. However, little is known about leaching of mixture of herbicides in the soil, especially in tropical regions like Brazil. The objective of this study is to evaluate the leaching of 14 C-mesotrione (cyclohexane-2-14 C-mesotrione) alone and in a mixture with S-metolachlor and terbuthylazine in seven tropical soil columns under laboratory conditions. These soils represented a wide range of properties with varying textures, cation exchange capacity (44 to 154 mmol c kg −1 ), pH (6.0 to 7.7), organic carbon content (0.58 to 27.32 g kg −1 ) and clay mineral contents (50 to 605 g kg −1 ), which are typical of tropical soils. Mesotrione residues were observed across all soil column layers (0-30 cm) in all evaluated soils by simulating 200 mm of water for 48 h. The application of mesotrione, alone or in a mixture, does not influence the leaching of this herbicide. Leaching of mesotrione ranged from low (up 15 cm) to very high (up 30 cm and leachate) in the tropical soils and may pose a potential groundwater contamination risk. In sand and loamy sand soil, the mesotrione was quantified in the leachate at all sampling times as above 80% of the amount initially applied. Thus, mesotrione application without the prior knowledge of the soil physical and chemical properties can result in inefficient weed control on field condition due to high leaching potentials.

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The effects of pesticide mixtures on degradation of pendimethalin in soils

Cited by 46 publications

References 26 publications

Degradation and adsorption of tebuconazole and tribenuron-methyl in wheat soil, alone and in combination

Degradation and adsorption of tebuconazole and tribenuron-methyl in wheat soil, alone and in combination

Fabrication of dendritic 0 G PAMAM-based novel polyurea microcapsules for encapsulation of herbicide and release rate from polymer shell in different environment

Assessment of Mesotrione Leaching Applied Alone and Mixed in Seven Tropical Soils Columns under Laboratory Conditions

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