Biochar and crushed straw additions affect cadmium absorption in cassava-peanut intercropping system

Zeng, Luping; Lin, Xianke; Zhou, Fei; Qin, Junhao; Li, Huashou

doi:10.1016/j.ecoenv.2018.10.003

Cited by 65 publications

(31 citation statements)

References 78 publications

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“…Furthermore, analysis of variance showed that the differences in the mean proportions of Proteobacteria, Chloroflexi, Planctomycetes, and Verrucomicrobia in the four planting patterns were significant at p < .05, the differences in the proportion of Gemmatimonadetes were significant at p < .01, and the differences in the proportion of Bacteroidetes were significant at p < .001 ( Figure 1b). In addition, the number of unique microbial genera in intercropping sugarcane soils was 68, which was much higher than those in intercropping peanut (14), monocropping sugarcane (17), and monocropping peanut (16; Figure 2). The significant increase in unique genera did not result in the increase of the Shannon-Wiener diversity index (Table 4)…”

Section: Sugarcane/peanut Intercropping Changed the Microbial Commumentioning

confidence: 95%

“…Studies have shown that peanut/maize intercropping changes the rhizosphere as well as nutrient concentrations in shoots [13], releases phytosiderophores, increases the ferric reductase activity of roots, and changes pH and acid phosphatases in the rhizosphere and bulk soil. The cassava/peanut intercropping system, a common model in South China, showed a yield advantage as well as cadmium absorption [14], but it had little effect on microbial diversity [15]. The sugarcane/ peanut intercropping system had long been used in the agricultural process in Guangxi Zhuang Autonomous Region (GZAR).…”

Section: Introductionmentioning

confidence: 99%

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Sugarcane/peanut intercropping system improves the soil quality and increases the abundance of beneficial microbes

et al. 2021

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Sugarcane/peanut intercropping is a highly efficient planting pattern in South China. However, the effects of sugarcane/peanut intercropping on soil quality need to be clarified. This study characterized the soil microbial community and the soil quality in sugarcane/peanut intercropping systems by the Illumina MiSeq platform. The results showed that the intercropping sugarcane (IS) system significantly increased the total N (TN), available N (AN), available P (AP), pH value, and acid phosphatase activity (ACP), but it had little effect on the total P (TP), total K (TK), available K (AK), organic matter (OM), urease activity, protease activity, catalase activity, and sucrase activity, compared with those in monocropping sugarcane (MS) and monocropping peanut (MP) systems. Both intercropping peanut (IP) and IS soils contained more bacteria and fungi than soils in the MP and MS fields, and the microbes identified were mainly Chloroflexi and Acidobacteria, respectively. Intercropping significantly increased the number of unique microbes in IS soils (68 genera), compared with the numbers in the IP (14), MS (17), and MP (16) systems. The redundancy analysis revealed that the abundances of culturable Acidobacteriaceae subgroup 1, nonculturable DA111, and culturable Acidobacteria were positively correlated with the measured soil quality in the intercropping system. Furthermore, the sugarcane/peanut intercropping significantly increased the economic benefit by 87.84% and 36.38%, as compared with that of the MP and MS, respectively. These results suggest that peanut and sugarcane intercropping increases the available N and P content by increasing the abundance of rhizospheric microbes, especially Acidobacteriaceae subgroup 1, DA111, and Acidobacteria.

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Section: Sugarcane/peanut Intercropping Changed the Microbial Commumentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Sugarcane/peanut intercropping system improves the soil quality and increases the abundance of beneficial microbes

et al. 2021

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“…Xu et al 72 reported that after adding rice straw and wheat straw, the accumulation of Cd in maize shoots decreased by 69.5 and 66.9%, respectively. Zeng et al 65 . found that in the cassava-peanut intercropping system, the uptake of Cd by the two crops was significantly reduced after the addition of crop straw.…”

Section: Discussionmentioning

confidence: 99%

“…The inhibition effect of biochar mainly relies on the ion exchange of metal cations on its surface 64 and the precipitation or complexation of metal ions on biochar with minerals or functional groups 54 . The inhibition effect of crop straw mainly relies on the decomposition products produced by soil microbes, and there are plenty of functional groups on the surface of crop straw, which can complexation metal ions 65 .…”

Section: Discussionmentioning

confidence: 99%

Effects of biochar and crop straws on the bioavailability of cadmium in contaminated soil

Chen

et al. 2020

Sci Rep

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Numerous studies have been investigated the potential of biochar (BC) derived from various materials and crop straw (CS) to decrease the bioavailability of heavy metals in soil contaminated with cadmium (Cd), and thereby reduce their potential risk to human health and the ecological environment. However, little attention has been given to the comparison of heavy metal remediation efficiency using BC and CS such as peanut vine (PV) and rice straw (RS), especially in soil contaminated with Cd. Here, we explore if Cd bioavailability is affected in contaminated soil by BC and CS. Peanuts were grown in plastic pots, which contained BC or CS at 5% (dry weight, w/w) in controlled environment mesocosms. The bioavailability of Cd in contaminated soil was measured by Cd concentration in the plant and the concentrations of various forms of Cd in the soil. At the same plant age, growth with BC (compared with PV and RS) led to 13.56% and 8.28% lower rates of Cd content in the aboveground parts, 40.65% and 35.67% lower rates of Cd content in the seeds, yet 9.08% and 7.09% lower rates of Cd content in the roots, yet 35.80% and 28.48% lower rates of exchangeable Cd content in the soil. Moreover, BC amendment enhanced the biomass of peanut and physiological quality. Thus, BC had a greater impact on immobilizing Cd in the soil. The results imply that BC was more significantly (P < 0.05) remarkable in decreasing the Cd bioavailability and improving the biomass of peanut. BC has greater potential for enhancing soil quality and promoting peanut growth. In conclusion, this research demonstrates an understanding of employing BC as a promising inexpensive and eco-friendly amendment to remediate soil contaminated with Cd.

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“…Fonte: Autor "adaptado de" Seab, 2017. Devido à elevada produção de mandioca no mundo (aproximadamente 281,9 milhões de toneladas em aproximadamente 104 países), a quantidade de resíduos 54 gerados após seu processamento também se mostra significativa. Isso tem propiciado o desenvolvimento de estudos de aplicação desses resíduos, compostos principalmente por folhas, caules e raízes, nas mais diversas funções, incluindo: geração de bioenergia e biocombustíveis, produção de artesanatos e rações animais, obtenção de adsorventes de metais pesados e pigmentos, além de possibilidades de aplicação na obtenção de fungos associados a essas partes, os quais têm se mostrado fontes promissoras para a obtenção de enzimas de interesse industrial como, por exemplo, as proteases (TAPPIBAN et al, 2019;ZENG et al, 2019;SULAIMAN et al, 2018;BEAKOU et al, 2017;SÁNCHEZ et al, 2017;ADEKUNLE; ORSAT; RAGHAVAN, 2016).…”

Section: Figura 19 -Regiões Produtoras De Mandioca No Brasilunclassified

Obtenção de extratos enzimáticos enriquecidos em proteases a partir de fungos associados a caules e folhas de mandioca visando a digestão do glúten

Garcia¹

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Biochar and crushed straw additions affect cadmium absorption in cassava-peanut intercropping system

Cited by 65 publications

References 78 publications

Sugarcane/peanut intercropping system improves the soil quality and increases the abundance of beneficial microbes

Sugarcane/peanut intercropping system improves the soil quality and increases the abundance of beneficial microbes

Effects of biochar and crop straws on the bioavailability of cadmium in contaminated soil

Obtenção de extratos enzimáticos enriquecidos em proteases a partir de fungos associados a caules e folhas de mandioca visando a digestão do glúten

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