Stability of Imidacloprid (Premise® 75) in a Tank-Mixed Aqueous Solution When Stored in Shade or Sunlight

Spomer, Neil A.; Husen, Timothy J.; Kamble, Shripat T.

doi:10.1007/s00128-008-9535-1

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…Imidacloprid (IMI) is a broad-spectrum neonicotinoid insecticide with excellent systemic and contact activity, low toxicity, and low residue, supporting its widespread application in many agricultural crops . Nevertheless, this pesticide is unstable under UV exposure and will undergo rapid photolysis even when exposed to sunlight, thereby losing its efficacy. , Thus, nanocarrier encapsulation and delivery are of great significance to protect IMI against photolytic decomposition. Among various nanocarriers, thermosensitive and photosensitive release systems are preferred because the release rate and efficacy of IMI is positively correlated with ambient temperature, , which adapts to the increasing tendency of pests under higher temperatures .…”

Section: Introductionmentioning

confidence: 99%

Degradable PDA@PNIPAM-TA Nanocomposites for Temperature- and NIR light-Controlled Pesticide Release

Wang,

Fan,

et al. 2023

Langmuir

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Controlled pesticide delivery systems offer many distinctive advantages over conventional pesticide formulations. In this work, degradable poly(N-isopropylacrylamide) (PNIPAM)–tannic acid (TA) microgels and multifunctional PDA@PNIPAM-TA nanocomposites were prepared in a high-gravity rotating packed bed reactor (RPB) for smart pesticide delivery and release. The as-prepared microgels and nanocomposites showed reversible temperature-dependent swelling/deswelling behavior and irreversible pH-induced degradation. A dynamic contact angle test suggested that the introduction of TA and PDA into the PNIPAM matrix could enhance foliar adhesion and deposition efficiency. The nanocomposites were further used for the encapsulation and delivery of imidacloprid (IMI) to protect it from rapid photolysis and improve its pest-control efficiency. Their thermoresponsive behavior as well as pesticide loading capacity could be tuned by tailoring the PNIPAM-TA shell thickness, which could be varied by the NIPAM amount. The release rate of IMI from the core/shell nanocomposites was positively correlated with environmental temperature and near-infrared (NIR) light, which was adaptive to the positive temperature-dependent toxicity correlation of IMI and the increasing trend of pests under high temperature. The cumulative release of IMI was 23.5% at 25 °C, while it was 81.2% at 40 °C after 24 h of incubation, and the release rate was greatly enhanced under NIR irradiation. The results indicated that the facile control of pesticide release could be realized by regulating environmental conditions. This work also provides an idea for using high-gravity technology to conveniently construct a smart, effective, and environmentally friendly pesticide delivery system for sustainable crop protection.

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Section: Introductionmentioning

confidence: 99%

Degradable PDA@PNIPAM-TA Nanocomposites for Temperature- and NIR light-Controlled Pesticide Release

Wang,

Fan,

et al. 2023

Langmuir

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“…The statistical analysis revealed that there was no significant difference between different bottle colors used in this study. A previous study by Spomer et al (2009) also found the concentrations of imidacloprid in a polyethylene tank had no significant difference with that of in a glass jar. Its concentrations remained unchanged although light penetrated the polythene tank and the glass jar in a different manner.…”

Section: Residuals Of Termiticides In Carmentioning

confidence: 71%

Evaluation of Optimum Conditions for Soil Termiticides Storage in Tropical Climate

Rashid

Majid

2020

MJS

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Soil termiticide treatment is a key strategy in controlling the termite population and infestation by creating a continuous barrier encompassing the structures. Termiticides, however, may dissipate for a variety of reasons such as a half-life, a degradation rate, a leaching activity, and a storage method. This study aimed to evaluate the optimum storage conditions for three of the most commonly used termiticides i.e. bifenthrin, fipronil, and imidacloprid. The evaluation was made by examining the Active Ingredients (AIs) of each termiticide using two sets of colored bottles (black and white) and two different storage areas (in car and store) within 30 days. The results revealed that the colored bottles (F: 0.181, df= 1, P= 0.672) and storage areas (F= 5.495, df= 1, P= 0.977) did not significantly affect the concentration of termiticides after 30 days. It further demonstrated that the tested termiticides were unstable in an aqueous solution after 30 days due to hydrolysis. The half-life values were recorded at 7.45 days (bifenthrin), 3.98 days (fipronil) and 9.42 days (imidacloprid), respectively. The black and white bottles showed no significant effect on termiticide concentrations, indicating that photodegradation could occur regardless if the termiticides were stored in the building or in the car. Fipronil was the least effective termiticide as its residual reduced to half after three days of mixing. Hence, it is recommended that any termiticide must be immediately used after mixing to avoid photodegradation and hydrolysis.

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Bioaccumulation of the pesticide imidacloprid in stream organisms and sublethal effects on salamanders

Crayton

Wood

Brown

et al. 2020

Global Ecology and Conservation

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Stability of Imidacloprid (Premise® 75) in a Tank-Mixed Aqueous Solution When Stored in Shade or Sunlight

Cited by 4 publications

References 3 publications

Degradable PDA@PNIPAM-TA Nanocomposites for Temperature- and NIR light-Controlled Pesticide Release

Degradable PDA@PNIPAM-TA Nanocomposites for Temperature- and NIR light-Controlled Pesticide Release

Evaluation of Optimum Conditions for Soil Termiticides Storage in Tropical Climate

Bioaccumulation of the pesticide imidacloprid in stream organisms and sublethal effects on salamanders

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