Superabsorbent hydrogels coating increased degradation and decreased bound residues formation of carbendazim in soil

Yang, Yatian; Zhang, Sufen; Yang, Jingying; Bai, Chan; Tang, Shenghua; Ye, Qingfu; Wang, Haiyan

doi:10.1016/j.scitotenv.2018.02.178

Cited by 16 publications

(9 citation statements)

References 36 publications

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“…The dry weights of cabbage shoot and whole plant in HMBC treatment were increased substantially compared with MBC-SAP and MBC alone treatment in all soils. Based on previous results, SHs-encapsulated formulation could significantly increase the dissipation and mineralization of MBC, and reduce the BR substantially 13 . With the environment friendly transformation fate of HMBC and favorable biomass for cabbage, SHs-encapsulated formulation might be a good way to spike the pesticide into the environment and cut down the potential hazards to agro-ecosysterm.…”

Section: Discussionmentioning

confidence: 66%

“…Different SAP amended treatments could trigger the remarkable different effects on soil BR release after sowing the succeeding crops. Based on our previous results of the fate of carbendazim amended with SAP and SHs-formulation, there was still higher amount of initial carbendazim BR in MBC-SAP treatment compared with MBC control and HMBC 12,13 . It seems that when we spike the carbendazim and SAP amendment into soil, there will be much more BR in soil and this residue is more readily released when we planted cabbage in the BR-amended soil.…”

Section: Discussionmentioning

confidence: 93%

“…Superabsorbent hydrogel (SAP) usually are used as soil conditioners and chemical formulations in agriculture to maintain soil moisture and enhance the pesticide efficiency 17 . However, some research showed when pesticides coexisted with SAP, the environmental fate and transformation of pesticides could be changed, especially for bound residue 12,13,18 . The bound residue could be released during further agricultural practices and may influence the succeeding crop and soil management 2,19 .…”

Section: Discussionmentioning

confidence: 99%

“…Thus it is important for us, and we should give priority attention to the food safety especially for crop grown in the soil spiked with SAP. It seems HMBC may be the potential way to spike pesticides into environment without the high pesticide residue bioaccumulation in cabbage and with safe fate in ecological environment 12,13 .…”

Section: Discussionmentioning

confidence: 99%

“…However, relatively less work has been conducted to study the soil environmental fate of pesticides when amended with SAP. Yang et al found that when SAP coexisted with pesticides in soil, the BR of MBC was increased when soil spiked with MBC and SAP (MBC-SAP), and decreased in term of superabsorbent hydrogels (SHs) formulations (HMBC) 12,13 . Nowadays, the potential for the release and subsequent availability and phytotoxic effects of BR when pesticides coexist with SAP or encapsulate as new formulations remain poorly understood, especially for the succeeding crops and food contamination in agriculture production.…”

mentioning

confidence: 99%

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Phytoavailability of bound residue of Carbendazim to Chinese cabbage (Brassica campestris ssp.chinensis) coexisted with Superabsorbent polymers

Yang

Wang

et al. 2020

Sci Rep

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Understanding the bioavailability and phytotoxicity of carbendazim (MBc) bound residues (BR) in soils incubated with different Superabsorbent polymer (SAP) amendment on succeeding crops is essential to assess their environmental fate and risks. in our research, we studied the morphological characteristics and 14 c-accumulation of chinese cabbage and released BR in three typical cultivated soils. the plant dry weight was in order of superabsorbent-hydrogels formulations (HMBc) > MBc > MBC and SAP (MBC-SAP) at 35 d in basic soil 3 (S3), with 675.40 ± 29.07 mg/plant.d.w, 575.93 ± 25.35 mg/plant.d.w and 427.86 ± 18.79 mg/plant.d.w. The whole plant accumulated 2-fold more BR when grew in neutral soil 2 (S2) treated with SAP than MBC at 7 d. The root accumulated a greater proportion of 14 c-MBc residue than shoot, with order of MBC-SAP > MBc > HMBC at 21d. The results indicate MBC-BR could be released and accumulated in plant. HMBc promoted the chinese cabbage growth with lowest 14 c accumulation, while MBC-SAP inhibited plant growth with the highest 14 c uptake. the released BR rate was 61.43 ± 3.75% of initial BR in MBC-SAP, with 2-fold higher than MBC and HMBC. It is assumed HMBc could be a potential environmentally friendly measure for rational use of pesticides in future. Pesticides are ubiquitous chemicals in the environment, and are usually used to control crop disease and maintain the products. When pesticides are applied to the field and undergo degradation, their metabolites and they could bind to organic or mineral constituents of soil, and form the non-extractable residue (bound residue) in soil 1. Bound residue (BR) is generally regarded as the soil detoxification process, which involves chemicals could permanently bind to soil matrix, and are no longer bioavailable and bio-accessible to organisms. However, some studies reported that BR could be released via microbial activity and physic-chemical mechanism, and accumulated in living tissues and food webs, posing high threat to human health 2. Han et al. found 14 C-labeled residue of ZJ0273 was released from the BR-amended soil upon planting, and rice seedling took up the 14 C from soil contaminated with compound residues and was inhibited to grow 3. Gao et al. detected a clear uptake, accumulation and translocation of phenanthrene and pyrene by ryegrass, and significant phytoavailabilty of bound-PAH residue 4. Liu et al. also demonstrated that the earthworms accumulated 31.5% of the total radioactivity 14 C-BR-RM 5 after exposure to the BRs of 14 C-CYC. Thus, the food safety issue of agricultural products originated from contaminated soils should be given a public concern. The potential release, bioaccumulation and phytotoxicity of the BR to succeeding non-target organism are always important topics for understanding the environment and human food safety impact of pesticides. Soils are the vital resources that provide life-supporting services of food production, water cleaning and habits for human and wildlife. Intensified agricultural production has deter...

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Section: Discussionmentioning

confidence: 66%

Section: Discussionmentioning

confidence: 93%