PEST MANAGEMENT SCIENCE
·
2024
·
IF 3.8
Jiayi Ma,Sheng Xiang,Yanxia Shi,Xuewen Xie,Ali Chai,Lei Li,Baoju Li,Tengfei Fan
BACKGROUND The use of pesticides in greenhouse vegetable cultivation is necessary and significant. However, traditional pesticide application methods such as the use of backpack sprayers with water-diluted pesticides have certain drawbacks, e.g., uneven distribution, high labor intensity, and safety risks. RESULTS In this work, fluazinam ultra-low-volume liquids (Flu-ULVs) were prepared using oily solvents as carriers. The effects of different oils on the physical properties of the preparations were investigated. The Flu-ULV can be sprayed directly using a hand-held ultra-low-volume (ULV) sprayer without dilution with water. Compared with commercial water-based suspension concentrates of fluazinam, the Flu-ULV samples showed better wetting of tomato leaves, better atomization, and more uniform droplet distribution. At a dosage of 300 mL/ha, the coverage rate of tomato leaves ranged from 32.47% to 79.3%, with a droplet deposition density of 556 to 2017 droplets/cm 2 . Application of Flu-ULVs provided 70.86% control efficacy against gray mold in tomatoes, which was higher than those achieved with reference products. Dermal exposure to Flu-ULVs was also evaluated in greenhouse experiments. The coverage rates for all parts of the operator's body ranged from 0.02% to 0.07%, with deposition volumes of 2.23 to 12.26 μg/cm 2 . CONCLUSION Ground ULV spraying of fluazinam was proved to be an effective and safe management option for the control of tomato gray mold in greenhouses. This study laid a foundation for the use of ultra-low volume spray to control vegetable diseases in greenhouse, especially those induced by high humidity environment. © 2024 Society of Chemical Industry.
研究领域:
植物保护
·
农学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2019
·
IF 3.571
He Qin,Xiaoteng Zhou,Danfei Gu,Lingxiao Li,Chengyou Kan
Inefficient usage and overdosage of conventional pesticide formulations has resulted in large economic losses and environmental pollution due to their poor water solubility and weak adhesion to foliage. In order to develop a green and efficient pesticide formulation, a kind of alkyd resin (AR) based on vegetable oil was first synthesized and used to fabricate the lambda-cyhalothrin/AR (LC/AR) nanoemulsion via in situ phase inverse emulsification, and its properties were then investigated. Results showed that the particle size of the LC/AR nanoemulsion was 50–150 nm with maximum LC loading capacity of as much as 40.9 wt %, high encapsulation efficiency >90%, and great stability in multiple environments. The LC/AR nanoemulsion exhibited better controlled release characteristics compared with LC commercial formulations, and a stronger adhesion on the foliage of the resulted nanoemulsion was also observed, which was attributed to low surface tension and strong interactions with foliar surfaces.
研究领域:
农药科学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PEST MANAGEMENT SCIENCE
·
2025
·
IF 3.8
Haiyan Yu,Tao Zhang,Cunyu Wei,Juan Yang,Xinle Ma,Jingchao Chen,Hailan Cui,Feng Liu,Xiangju Li
BACKGROUND Mesosulfuron-methyl (MSM) is currently the only available selective herbicide for controlling Aegilops tauschii in wheat fields. Improving the control performance of MSM against Ae. tauschii is crucial for ensuring wheat yield. Herein, strategies to improve the bioactivity of MSM against Ae. tauschii and the underlying mechanism were investigated. RESULTS The efficacy of MSM oil dispersion (MSM-OD, GR 50 = 21.62 g a.i. ha −1 ) on Ae. tauschii was higher than emulsion in water (GR 50 = 59.96 g a.i. ha −1 ) and emulsifiable concentrate (GR 50 = 77.34 g a.i. ha −1 ). A greater retention on Ae. tauschii leaves was responsible for the increased MSM-OD bioactivity. As the particle size decreased from 13.58 to 1.20 μm, the herbicidal activity of MSM-OD towards Ae. tauschii increased 3.07-fold, which was attributed to the small particle size-enabled faster plant absorption of MSM. Polyvinyl alcohol (PVA, 3%) addition in MSM-OD with a small particle size (MSM-OD-S + PVA) increased MSM residue on Ae. tauschii leaves after washing, and thus herbicidal activity. The increased wettability on Ae. tauschii leaves was related to the PVA-induced rainfastness increase of MSM-OD-S. Importantly, MSM-OD-S + PVA at the recommended field rate did not show an adverse effect on wheat growth. CONCLUSION A suitable formulation, reduced particle size and PVA addition can increase the herbicidal activity of MSM against Ae. tauschii , particularly under rainy conditions. These results can provide guidance for the development and application of other herbicides. © 2025 Society of Chemical Industry.
研究领域:
农业化学
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杂草科学
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农药制剂
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植物生理学
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作物保护
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Applied Materials Today
·
2025
·
IF 6.9
Mahesh P. Bhat,Vinayak Hegde,Cheol Soo Kim,Mahaveer Kurkuri,Kyeong-Hwan Lee
Traditional pesticide formulations often suffer from limitations such as poor foliar retention, uneven distribution, low plant uptake, and inefficient utilization, necessitating the need for advanced, sustainable alternatives. In this study, a hybrid carrier system, Pec@Pro@Ti-MOF@DE, was developed to enhance the efficiency of prochloraz (Pro) against gray mold ( Botrytis cinerea ). The system integrates titanium metal-organic frameworks (Ti-MOF) anchored onto diatomaceous earth (DE), with pectin (Pec) coating serving as a responsive release barrier. The incorporation of DE significantly improved the foliar adhesion of MOF particles, enabling pesticide presence at infection sites and promoting efficient penetration and systemic translocation. The high surface area of Ti-MOF@DE (731 m 2 /g) facilitated a substantial prochloraz loading capacity of 56.5 %. The pectin coating on the Pro@Ti-MOF@DE functioned as a biological gatekeeper, releasing prochloraz in response to enzymatic pectinase activity and pH changes associated with B. cinerea infection, achieving a 91.5 % cumulative release. Foliar adhesion studies confirmed strong carrier attachment, while fluorescence microscopy revealed bidirectional translocation within plant tissues. In vitro assays demonstrated superior antifungal activity, with an EC 50 of 0.017 µg/mL, significantly lower than that of free prochloraz (0.027 µg/mL). In vivo and post-harvest evaluations further validated the system’s performance, achieving fungal control efficacy of 97.3 % in tomato leaves and 95.6 % in fruits. Therefore, Pec@Pro@Ti-MOF@DE could be used as a biocompatible carrier for site-specific pesticide delivery without compromising plant safety, which would be a sustainable approach to improve prochloraz efficacy while reducing environmental risks in modern agriculture.
研究领域:
植物科学
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农药制剂
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纳米技术
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真菌病理学
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控释系统
✓ 已验证
产品关联
DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2025
·
IF 3.8
Haoxiang Zhu,Ying He,Yaqi Liu,Jianhua Guo,Jingxuan Zhu,Yunzhe Li,Kun Qian
BACKGROUND Pyrethroids are widely used insecticides due to their efficacy and safety for humans, yet their toxicity to beneficial insects like bees remains a critical environmental concern. Developing controlled-release formulations to mitigate non-target toxicity and enhance pesticide efficiency is imperative for sustainable agriculture. RESULTS In this experiment, two types of PCN-222 materials, with small and large particle sizes, were synthesized using a solvothermal method. Bifenthrin (Bif) was loaded onto PCN-222 to prepare the controlled-release agent Bif@PCN-222. The structure and properties of the prepared materials were characterized by morphology observation, infrared spectroscopy, thermogravimetric analysis, and contact angle measurements. The experimental findings indicated that Bif@PCN-222 demonstrated excellent release performance under alkaline conditions and exhibited better wettability on cabbage leaves compared to commercial formulations. Additionally, the Bif@PCN-222 controlled-release agent significantly improved resistance to UV photodegradation. Safety evaluations showed that Bif@PCN-222 had minimal impact on the growth of Zoysia grass and notably reduced toxicity to bees. CONCLUSION These results show that we have successfully prepared Bif@PCN-222, which can enhance the pest control effect, reduce the toxicity to non - target organisms, and have a relatively small impact on plant growth and the number of soil microflora. © 2025 Society of Chemical Industry.
研究领域:
环境科学
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农业化学
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纳米技术
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农药制剂
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生态毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2012
·Vol. 126
·期 6
·1859-1866
·
IF 1.289
Chun-Miao Xia,Yi-Feng Zhou,Wang-Yan Nie,Lin-Yong Song,Ming-Dong Dai,Xiao-Ling Xu,Zhen Wang
The nanoencapsulation of cypermethrin (CP) was carried out by miniemulsion polymerization, a convenient one-pot encapsulation technique for nanocapsules. The encapsulation was achieved by polymerization inducing phase separation within minidroplets dispersed in an aqueous phase. For nanocapsules prepared in this way, the type of surfactant and initiator, the level of the crosslinking agent or chain-transfer agent, and the monomer/CP ratio play a significant role in defining the end morphology of the latex particles. Specifically, for a styrene (St)/CP system, there were optimum levels of ionic surfactant (1.0 wt % sodium dodecyl sulfate), nonionic surfactant [0.5 wt % poly(ethylene glycol) monooctylphenyl ether], oil-soluble initiator [1.0 wt % azobis(isobutyronitrile)], crosslinking agent (1.0 wt % divinylbenzene), and a St/CP ratio of 1 : 1 for obtaining well-defined nanocapsules of CP. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
研究领域:
高分子科学
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纳米技术
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农药制剂
·
胶体与界面化学
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2019
·
IF 1.163
Huayao Chen,Junlong Hu,Hongjun Zhou,Xinhua Zhou,Hua Xu
The triblock copolymer F127 (molecular formula (EO)106(PO)70(EO)106) was adopted as template with TMOS as the silica source. They were hydrolyzed by acidic aqueous solution in which chlorpyrifos (CH) and metal ions (Mn+) were introduced to the products to construct "F127-Mn+-CH" coordination structure in one step. Different sustained release systems were prepared through changing the composition of acidic aqueous solution added during the preparation. The characterization results confirmed the coordination interaction existing among metal ions, mesoporous silica and chlorpyrifos. It was also proved that the chlorpyrifos loaded in the sustained release system existed as amorphous state. According to SEM and TEM observation, the pore of the material presented as face-centered cage-type cubic structure with IM-3M symmetry similar to SBA-16 which is in accordance with N2 adsorption isotherms. The as-synthesized system showed significant pH sensitivity in the sustained release process indicating that the sustained release system can be well stored in neutral environment and activated while sprayed into earth in acid or basic environment. Their sustained release curves can be described by Korsmeyer-Peppas equation in neutral while accords with Higuchi under acid or basic environment.
研究领域:
材料科学
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纳米技术
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药物递送系统
·
环境化学
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农药制剂
✓ 已验证
DOI
高影响因子
PEST MANAGEMENT SCIENCE
·
2025
·
IF 3.8
Yibing Yan,Songye Li,Shanshan Wang,Yifan Peng,Kaikun Pi,Bin Sun,Liang Cheng,Bing Liu,Fangxiang Song
BACKGROUND Rice sheath blight, caused by Rhizoctonia solani ( R. solani) poses a significant threat to global rice production. Although prochloraz (PRO) is an effective fungicide, its poor photostability and low water solubility severely limit its field performance. We developed a sustainable, stimuli-responsive delivery system to enhance PRO efficacy and minimize environmental risks. RESULTS Multilayered mesoporous nanoparticles (MSN@PMO) were synthesized via a hard-template route and converted into hollow periodic mesoporous organosilicas (H-PMO) by sodium carbonate etching. PRO was encapsulated in H-PMO and sealed with pectin, yielding a dual pH/pectinase responsive formulation (Pec@PRO-H-PMO, PPHP). PPHP exhibited sustained release for 144 h under acidic and enzymatic conditions, and showed markedly improved photostability, foliar adhesion and rainfastness compared with PRO technical concentrate (PRO TC) and PRO water emulsion (PRO EW). Bioassays demonstrated that PPHP exhibited 1.8 times greater antifungal activity against R. solani compared to PRO TC. Ecotoxicological analysis revealed 11.9 times higher zebrafish median lethal concentration (LC₅₀) values than PRO TC over 80% viability of human bronchial epithelial (BEAS-2B) cells at 18.4 mg/L, suggesting improved biosafety. CONCLUSIONS The dual pH/pectinase triggered release of PPHP enhanced pesticide utilization and improved safety. This strategy presents a novel approach for developing stimuli-responsive pesticide delivery systems, aiming to strengthen crop disease control efficiency and mitigate environmental risks. © 2025 Society of Chemical Industry.
研究领域:
农业化学
·
农业纳米技术
·
植物病理学
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农药制剂
·
控释系统
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Zixuan Zhu,Xiao Wang,Qingyuan Bian,Lifei Zhi,Yaowen Zhuo,Lingxiao Guo,Guoyong Wang
Siloxane surfactants have wide-ranging applications. However, siloxane surfactants tend to form stable foams, and using traditional defoamers (allyl polyether) to eliminate foam has many limitations. In this study, two butynediol ethoxylate-based tetrasiloxane surfactants, EmSi4 (m = 1, 2), with higher surface activity, and two analogue structured butynediol tetraethoxylate-based trialkyl silanes, E2Cn (n = 1, 2), were synthesized with low foaming properties. Compared with E2Cn, surface activity tests indicated that tetrasiloxane-based EmSi4 had a higher surface activity, which could reduce the surface tension of water to 23.53 mN·m–1. In addition, they exhibited better wetting properties on hydrophobic paraffin films and pothos leaves. In particular, E2Si4, with eight ethoxy groups, has better water solubility and a low foam content (6 mm/10 min), categorizing it as a low-foam agent. Therefore, butynediol ethoxylate-based tetrasiloxanes are efficient wetting agents suitable for pesticide applications. This provides an innovative solution for the development of new pesticide-wetting agents.
研究领域:
胶体与界面化学
·
应用化学
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农药制剂
·
表面活性剂科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2019
·
IF 1.163
Kechao Liao,Pengfei Li,Guilan Chen,Xueqing Qiu
Our main goal was to evaluate release mechanism of microcapsules with different core status. First, flufiprole microcapsules were directly encapsulated with chitosan (CS) and sodium dodecyl sulfate (SDS) through layer-by-layer (LbL) self-assembly. The changes of process parameters on the microcapsules characteristics (zeta potential, and morphology) were investigated. Also the release trends of flufiprole were determined and fitted with mathematical models. It was revealed that releases of three types of microcapsules were all very similar, but microcapsule with solid particles and oil suspending agent reached their peak values at 36–42, 42–48 h respectively, microcapsule with solution droplets cannot reach a maximum value. In the stage of initial burst release, Higuchi model performed better with oil suspending agent and solid particles, which was in agreement with the Fick's law. Core status being solution, release curves of the pesticide corresponded to zero-order which was in agreement with dissolution mechanism. In the stage of slow release, the values of R2 for solution and solid particles were all above 0.98, betokened the release phenomenon were in line with the first-order. On the other hand, release of oil suspending agent conformed to Higuchi model.
研究领域:
农药制剂
·
控释技术
·
高分子科学
·
胶体与界面化学
·
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）