SCIENCE OF THE TOTAL ENVIRONMENT
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2023
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IF 9.8
Muyesaier Tudi,Linsheng Yang,Jiangping Yu,Binggan Wei,Yuan Xue,Fang Wang,Linfeng Li,Qiming Jimmy Yu,Huada Daniel Ruan,Qin Li,Ross Sadler,Des Connell
Drip irrigation is a valuable method for optimising water and fertiliser usage, motivating its increasing use. However, the ecological effects of drip irrigation fertilisation have not been sufficiently evaluated, limiting its effective and widespread use. Within this context, we aimed to determine the effects and potential ecological risks of using polyethylene irrigation pipes and mulch substrate under various drip irrigation conditions as well as burning of waste pipes and mulch substrate. Laboratory simulations of field conditions were used to determine the distribution, leaching, and migration pattern of heavy metals (Cd, Cr, Cu, Pb, and Zn) from plastic drip irrigation pipes and agricultural mulch substrate into various solutions. Maize samples obtained from drip-irrigated fields were analysed to determine the presence of heavy metal residues and assess the risk of heavy metal contamination. Heavy metal leaching from pipes and mulch substrate was high under acidic conditions, while the migration of heavy metals from plastic products was low in alkaline water-soluble fertiliser solutions. After combustion, heavy metal leaching from pipes and mulch residues increased considerably, with the migration capacity of Cd, Cr, and Cu increasing by >10-fold. Heavy metals in plastic pipes migrated primarily to the residue (bottom ash), whereas those from mulch substrate migrated to the fly ash component. Under experimental conditions, the migration of heavy metals from plastic pipes and mulch substrate had a negligible effect on the heavy metal content in aqueous environments. Although heavy metal leaching increased, the effect on water quality under actual irrigation conditions was relatively minor (in the order of 10 −9 ). Thus, the use of plastic irrigation pipes and mulch substrate did not result in significant heavy metal contamination and potential risk to the agriculture ecosystem. Our study findings provide evidence for the effective application and widespread promotion of drip irrigation and fertiliser technology .
研究领域:
农业生态学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PEST MANAGEMENT SCIENCE
·
2021
·Vol. 77
·期 5
·2584-2590
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IF 4.845
Yingjie Wen,Huayue Meng,Chen Zhao,Fei Lin,Hanhong Xu
BACKGROUND Chemical control is the most used and effective method to control Diaphorina citri , the vector of the phloem-limited bacteria associated with citrus huanglongbing (HLB) disease. The objectives of this study were to determine the effectiveness of flupyradifurone applied via dripping irrigation systems on D. citri . Bioassays were conducted using leaves harvested on various dates post treatment, and insecticide residue in leaf tissue was quantified. RESULTS The drip application of flupyradifurone on citrus trees provided high-level and long-term control against D. citri adult, and the median lethal concentration (LC 50 ) for ingestion of flupyradifurone in D. citri was 22.22 mg kg –1 (fresh leaf). Flupyradifurone residue was detected in leaf tissue within 3 days after treatment. The measured level of flupyradifurone peaked on day 40 day after application, and then showed a steady decline in subsequent days for all three applied dosages. The amounts of flupyradifurone in upper, middle, and lower leaves were similar, and trends in the change in concentration of flupyradifurone were consistent. CONCLUSIONS The results demonstrate that flupyradifurone can be a valuable new tool for D. citri management programs, and drip-applied flupyradifurone provides an extended period of control efficacy. This paper could provide a reference to reduce the dependence on foliar-applied insecticides, with associated benefits for non-target exposure to workers and pollinators. © 2021 Society of Chemical Industry
研究领域:
植物保护
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农业昆虫学
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产品关联
DOI
PubMed
高影响因子
ECOLOGICAL ENGINEERING
·
2024
·
IF 3.9
Xiaokang Li,Yinfei Wang,Ning Li,Yuhong Su
In the Xinjiang oilfield exploitation area, the natural attenuation of petroleum hydrocarbons and plant growth is inhibited by the arid environment and saline-alkali soil conditions. By measuring the spatial distribution of salinity , alkalinity, and petroleum contamination in soil under drip irrigation (DRI), along with plant physiological indices, soil microbial abundance, and the remediation efficiency of plant intercropping systems, this study explored the impact of various concentrations of mixed surfactants on plant remediation capacity in two different local soil types under DRI. The results demonstrated that DRI facilitated the lateral migration of salt-alkali in the soil and increased plant growth at the DRI point. Compared to a ryegrass ( Lolium perenne ) monoculture , the combined biomass of cotton ( Gossypium spp. ) and ryegrass in a ryegrass-cotton intercropping system increased by 35.6% in loamy soil, and the phytoremediation efficiency of petroleum-contaminated soils in the intercropping system did not decrease. Periodic DRI with surfactants mitigated the downward migration of petroleum hydrocarbons, reducing the risk of underground pollution, and increased the abundance of petroleum-degrading bacteria as well as the efficiency of the intercropping system in remediating the soil. The intercropping system in loamy soil exhibited a more pronounced synergistic effect among the remediation elements than in sandy soil . This study demonstrated that the periodic application of surfactants and implementation of intercropping systems under DRI can effectively reduce petroleum pollutants in soil and can be considered a promising alternative for the phytoremediation of petroleum-contaminated saline-alkali soils in arid regions.
研究领域:
环境科学
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土壤学
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植物学
✓ 已验证
产品关联
DOI
高影响因子
Sustainable Materials and Technologies
·
2025
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IF 9.2
Zifeng Yang,Haonan Zhang,Donglai Zhang,Yun Fang,Qiuyu Xiong,Bin Yu,Jingli Cheng,Liqing Li,Qunzhen Guo,Jinhao Zhao
Soybean root rot, primarily caused by Fusarium and Phytophthora spp., severely damages root tissues, impairs nutrient uptake, and leads to plant death, particularly in saline-alkaline soils, where high pH, salt stress, and deteriorated soil conditions reduce the stress resistance of soybean plants. Conventional chemical treatments are less effective owing to the poor vertical mobility of fungicides in alkaline soils. Stimuli-responsive controlled-release formulations can improve the bioavailability of active ingredients, reduce application frequency, and minimize environmental impact. Here, we present a sustainable, biodegradable, and environmentally benign delivery system based on zein, a plant-derived protein. Zein was modified with non-toxic succinic anhydride to improve water dispersibility, resulting in a green carrier (SZ) with reduced ecological risk. The UV-sensitive fungicide difenoconazole (Di) was encapsulated into this carrier via nanoprecipitation to construct a stimuli-responsive nano-enabled delivery system (Di@SZ). Di@SZ exhibited alkaline-triggered release, with rapid release in alkaline conditions. Compared to the commercial emulsifiable concentrate (EW), Di@SZ nanoparticles showed a 3.03-fold improvement in UV resistance. They enhanced vertical mobility of Di in soil, enabling targeted root delivery during drip irrigation in saline-alkaline soils. Pot experiments demonstrated that Di@SZ provided stronger and longer-lasting protection against soybean root rot than EW. Moreover, the system exhibited superior biosafety, with 2.77-fold lower toxicity to soil earthworms relative to EW. These findings underscore Di@SZ as a sustainable, materials-based plant protection technology that integrates renewable resources, reduces environmental impact, and enhances efficacy, offering a promising approach for eco-friendly disease management in agriculture.
研究领域:
植物病理学
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农业纳米技术
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药物缓释
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环境友好材料
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土壤修复
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作物保护
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOILS AND SEDIMENTS
·
2021
·Vol. 21
·期 6
·2287-2300
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IF 3.308
Kang Longfei,Zhang Guoqiao,Chu Guixin
Purpose Phosphorus (P) fertilization methods significantly affect soil P availability, transformation, and crops yield. However, contradictory or paradoxical results are often available, and debates about this issue have never ceased so far. Therefore, the aims of this study are to explore influences of different P application methods on availability and transformation of added P in drip-irrigated system, and the responses of maize P uptake and its agronomic performances to P fertigation are also investigated. Materials and methods Here, we conducted a pot and filed experiments in drip-irrigated calcareous soil. Treatments included different P sources (phosphoric acid; polyphosphoric acid) with basal and split repeated application manners. Results and discussion Compared to the basal application, the average values of C DGT -P (P concentrations tested via diffusive gradient in thin films technique), Olsen-P, water-soluble P, and in situ P in the split repeated P application increased by 23.7%, 10.2%, 16.5%, and 34.4%, respectively (pot experiment). Furthermore, the average values of labile P (resin P and NaHCO 3 -P) and moderately labile P (NaOH-P) with the repeated P addition increased by 19.7% and 12.6%, whereas the concentrations of non-labile P lowered by 19.3%, respectively, relative to basal application treatment (pot experiment). The same trend was obtained in field experiment, implying that complete repeated P addition significantly increased P availability, reduced soil P transformation, and decreased P fixation. Therefore, a better agronomic performance of maize (P uptake, grain yield, and phosphorus use efficiency) was achieved in the complete repeated P application rather than basal application. Besides, diffusive gradient in thin film technique (DGT) was proved to be an accurate and powerful approach in testing soil available P. Conclusions Our findings elucidate that repeated delivering P through fertigation method can be recommended as an effective P application strategy in drip-irrigated field, especially in semi-arid and arid regions. The feasibility of DGT method was certified and C DGT -P could well characterize plant-accessible P.
研究领域:
农业
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土壤学
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植物营养
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环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）