Effects of super absorbent polymers on soil microbial properties and Chinese cabbage (Brassica chinensis) growth

Xi, Li; He, Ji‐Zheng; Liu, Yurong; Zheng, Yuqi

doi:10.1007/s11368-013-0657-7

Cited by 44 publications

(20 citation statements)

References 34 publications

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“…This is attributed to the fact that the volume of the polymer increases after swelling, and the gap among the soil particles increases. It may be beneficial for the maintenance of the activity of soil microbes [54,55]. In addition, the saturated moisture of the samples increases as the content of polymer increases.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Superabsorbent Polymers Based on Sawdust

Zhang

Chen

et al. 2019

Polymers

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Sawdust, a cheap by-product of the timber and forestry industry, was considered as a framework structure to prepare superabsorbent polymer with acrylic acid (AA) and acrylamide (AM), the synthetic monomers. The effects of initiator content, crosslinker content, AA content, AM content, degree of neutralization of AA, and reaction temperature on the swelling rate of superabsorbent polymer were investigated. The synthesized polymer was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Under optimal synthesis conditions, the results showed that the swelling rate of the polymer in deionized water and 0.9% NaCl solution reached 738.12 and 90.18 g/g, respectively. The polymer exhibits excellent swelling ability, thermal stability, and reusability. After the polymer was introduced into the samples (soil or coal), the water evaporation rate of the samples was significantly reduced, and the saturated water holding capacity and pore structure were also significantly improved.

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Section: Resultsmentioning

confidence: 99%

Preparation and Characterization of Superabsorbent Polymers Based on Sawdust

Zhang

Chen

et al. 2019

Polymers

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“…In addition, SAP could be a favorable nutrition sources for soil microorganism. It might enhance the activity and biodiversity of microbes to some extent 20,21 . But for MBC-SAP treatment, the growth of cabbage was inhibited during the incubation, especially for S 3 .…”

Section: Discussionmentioning

confidence: 99%

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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“…For example, soils with swelling MHMS can retain large amounts of water [9]. Besides, the greenhouse experimental results of Chinese cabbage confirmed that the use of MHMS would increase microbial biomass C, water content and organic matters in soils, which are conducive for Chinese cabbage growth [10]. Another research reported a significant effect on total dry matter and crop growth rate of soybean with the MHMS under drought stress condition [11].…”

Section: Introductionmentioning

confidence: 88%

A Long Term PAM Application on Soil Microbial Biomass and Oat (Avena nuda L.) Growth in Loess Hilly-Gully Region of China

Ma¹,

Liu²,

Zhao³

et al. 2017

dtetr

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Abstract. Effects of different years of Polyacrylamide (PAM) application on oat growth, soil microbial biomass and moisture content in semi-arid regions were studied through a field experiment from 2011 to 2015. The experiment consisted of total of 5 treatments and a control. These were: Conventional tillage (CK), (1) M1: PAM 2011, (2) M2: PAM 2011 and 2012, (3) M3: PAM 2011, 2012, (4) M4: PAM 2011, 2012, (4) M5: PAM 2011, 20122015and 2015. The results showed that with increasing PAM and the time interval, the oat seedling soil moisture content (SMC), microbial biomass carbon (SMBC), microbial biomass nitrogen (SMBN), and microbial biomass phosphorus (SMBP) had a rising trend. Compared with the control, the treatments administered continuously for five years; SMC of 0-60 cm soil layer was affected the mostly. Differences of test groups decreased with the increase of soil layer. At a depth of 0-60 cm soil, soil moisture increased by 25.91-78.51% in M5. SMBC increased by 21.39-69.49% in M4, SMBN increased by 34.58-139.02% in M5 and SMBP increased by 44.58-83.38% in M5. Meanwhile, aboveground fresh weight increased by 196.67-232.88% in M5 as well as dry weight increased by 182.05-224.23% in M5, respectively after stable emergence. The effects of applying PAM on micro ecological with differences time interval have an effect on soil microbial life, the results point out the following superiority order: 5 years>4 years>3 years>2 years >1 year. However, there was significant improvement observed in plowing layer, with continuous application of PAM at 0-20 cm depth, SMC has significant positive correlations with fresh biomass and all three SMB variables. We recommend application of PAM could improve soil moisture content and then influence microbial biomass and further plant growth; M5 treatment which is more suitable for the rainfed farmland. Farmers can be recommended to use PAM to improve soil qualities and crop production in loess hilly-gully region of China.

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Effects of super absorbent polymers on soil microbial properties and Chinese cabbage (Brassica chinensis) growth

Cited by 44 publications

References 34 publications

Preparation and Characterization of Superabsorbent Polymers Based on Sawdust

Preparation and Characterization of Superabsorbent Polymers Based on Sawdust

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

A Long Term PAM Application on Soil Microbial Biomass and Oat (Avena nuda L.) Growth in Loess Hilly-Gully Region of China

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