Formulation approaches to reduce post-application pesticide volatilisation from glass surfaces

Houbraken, Michael; Senaeve, David; Dávila, Edelbis López; Habimana, Valens; Cauwer, Benny De; Spanoghe, Pieter

doi:10.1016/j.scitotenv.2018.03.186

Cited by 13 publications

(12 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Another limitation is that the K plant‑air values and photodegradation rates we used in the model were measured for pure active ingredients rather than formulations. The adjuvants in formulations can effect pesticide volatilization rates from soils, glass, and other surfaces, − and formulated epoxiconazole has been shown to penetrate into the leaf tissue more readily than pure epoxiconazole . However, data concerning the potential effects of formulation adjuvants on pesticide volatilization from leaf surfaces are extremely limited in the literature .…”

Section: Resultsmentioning

confidence: 99%

Foliar Photodegradation in Pesticide Fate Modeling: Development and Evaluation of the Pesticide Dissipation from Agricultural Land (PeDAL) Model

Lyons

Hageman

2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

Pesticide dissipation from plant surfaces depends on a variety of factors including meteorological conditions, the pesticide’s physicochemical properties, and plant characteristics. Models already exist for describing pesticide behavior in agriculture fields; however, they do not account for pesticide-specific, condition-specific foliar photodegradation and the importance of this component in such models has not yet been investigated. We describe here the Pesticide Dissipation from Agricultural Land (PeDAL) model, which combines (a) multiphase partitioning to predict volatilization, (b) a new kinetics module for predicting photodegradation on leaf surfaces under varying light conditions based on location and timing, and (c) a generic foliar penetration component. The PeDAL model was evaluated by comparing measured pesticide dissipation rates from field experiments, described as the time for the pesticide concentration on leaves to decrease by half (DT50), to ones generated by the model when using the reported field conditions. A sensitivity analysis of the newly developed foliar photodegradation component was conducted. We also showed how the PeDAL could be used by applicators and regulatory agencies. First, we used the model to examine how pesticide application timing affects dissipation rates. Second, we demonstrated how the model can be used to produce emission flux values for use in atmospheric dispersion and transport models.

show abstract

Section: Resultsmentioning

confidence: 99%

Foliar Photodegradation in Pesticide Fate Modeling: Development and Evaluation of the Pesticide Dissipation from Agricultural Land (PeDAL) Model

Lyons

Hageman

2021

Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Many commonly used pesticides (including insecticides, herbicides, and fungicides) undergo significant volatilization after application, − causing a reduction in their intended efficacy. Volatilized pesticides can also undergo atmospheric transport to downwind sites, − potentially creating unintended consequences for sensitive nontarget organisms. − Volatilization rates depend on the strength of the intermolecular interactions between the active ingredient (AI) and the matrices they encounter in the agricultural field.…”

Section: Introductionmentioning

confidence: 99%

“…Most of these studies were conducted with pesticides applied to glass surfaces or filter paper; the results of five such studies are summarized in Table S2. In some cases, adjuvants led to reduced AI volatilization from these surfaces, but in other cases, the opposite occurred. , Stevens and Bukovac reported a 3–6 times increase in atrazine volatilization from polytetrafluoroethylene (PTFE) disks in the presence of adjuvants, but the same set of adjuvants caused a 45–70% decrease in DDT volatilization . Houbraken et al .…”

Section: Introductionmentioning

confidence: 99%

“…Houbraken et al . measured the effects of several adjuvant types on the volatilization of three AIs from glass surfaces and showed that the effects varied widely depending on the adjuvant-AI combination. , To the best of our knowledge, only one previous study investigated the effects of adjuvants on pesticide volatilization from soil, and in that case, atrazine volatilization was not significantly affected by the adjuvants in an emulsifiable concentrate . An approach for measuring “effective vapor pressures” of AIs in the presence of adjuvants has been developed, and Houbraken et al .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Influence of Adjuvants on Pesticide Soil–Air Partition Coefficients: Laboratory Measurements and Predicted Effects on Volatilization

Das

Hageman

2020

Environ. Sci. Technol.

View full text Add to dashboard Cite

A solid-phase fugacity meter was used to measure the soil−air partition coefficients of three semivolatile pesticides (chlorpyrifos, pyrimethanil, and trifluralin) in the absence of additional adjuvants (K soil−air,AI ), as part of commercial formulations (K soil−air,formulation ), and as formulation mixtures with an additional spray adjuvant added (K soil−air,formulation+spray adjuvant ). Chlorpyrifos K soil−air,formulation values were also measured over 15−30 °C, allowing for the change in internal energy of the phase transfer reaction (Δ soil−air U) to be calculated and compared to the Δ soil−air U for K soil−air,AI from the literature. Measured K soil−air values were then used as input parameters in a pesticide volatilization model to understand how their variability affects pesticide volatilization rates under different conditions. Initial experiments conducted at ∼24 °C indicated that all pesticides volatilized more readily in the presence of adjuvants than in their absence and that the additional spray adjuvant had minimal impact. The Δ soil−air U values were 328 and 90 kJ/mol for chlorpyrifos in the absence and presence of formulation adjuvants, respectively, suggesting that adjuvants may weaken or disrupt intermolecular attractions between pesticide molecules and soil. At temperatures below 24.5 °C, modeled chlorpyrifos volatilization rates were higher in the presence of adjuvants than in their absence; however, the opposite occurred at temperatures above 24.5 °C.

show abstract

“…It has recently identified that SC formulations show less leaching of pesticides than conventional emulsifiable concentrate formulations. Similarly, another study has identified that in SC formulations, volatilization of active ingredient in environment reduced to 33.5% compared with conventional pesticide formulations [13]. Suspension concentrates have overcome the limitations associated with conventional organic solvent-based formulations (Figure 7).…”

Section: Recent Advancements In Agrochemical Formulationsmentioning

confidence: 98%

Vital Role of IPFT in Development of New-Generation Pesticide Formulation for Crop Protection: Advancement Overview in Asian Countries

Iqbal¹,

Agrawal²,

Alam³

et al. 2022

Agricultural Development in Asia - Potential Use of Nano-Materials and Nano-Technology

View full text Add to dashboard Cite

The agricultural sector of Asian countries supports 60% of the global population, accounting one-fifth of the world’s agricultural land. Despite the gap between demand and supply of food is gradually increasing due to the damages caused by insect and other pest attacks on the limited agricultural land, the pest attack has influenced the entire agriculture sector either directly or indirectly, causing socioeconomic losses. To combat, farmers have been using conventional agrochemicals nonjudiciously that lead to adverse effects such as pesticide resistance, environmental contamination, and non-target toxicity. In this regard, new-generation agrochemical formulation techniques are advantageous over conventional pesticides and play a vital role in sustainable agriculture by fulfilling the demand of over-rising food supply to feed the increasing population. These formulations exhibit desired bio-efficacy at lower doses and have minimum possibility to leave pesticide residues in crop products and the environment. Institute of Pesticide Formulation Technology (IPFT), Gurugram, is one of the leading institutes in Asia, which is actively engaged in developing new-generation formulations to deliver safer, efficient, and environment-friendly pesticide formulations. So far, IPFT has developed 60 pesticide formulations and transferred technologies to different agrochemical industries globally. The new-generation formulations developed by IPFT mainly include microemulsion, nanoemulsion, capsulated suspension, nano-encapsulation, an emulsion in water, mixed formulations including several botanical pesticide formulations. The new advancement in pesticide delivery systems is very supportive in combating the crisis faced by the agricultural sector. In this chapter, formulation of different new-generation pesticides and their advancement are summarized.

show abstract

Formulation approaches to reduce post-application pesticide volatilisation from glass surfaces

Cited by 13 publications

References 31 publications

Foliar Photodegradation in Pesticide Fate Modeling: Development and Evaluation of the Pesticide Dissipation from Agricultural Land (PeDAL) Model

Foliar Photodegradation in Pesticide Fate Modeling: Development and Evaluation of the Pesticide Dissipation from Agricultural Land (PeDAL) Model

Influence of Adjuvants on Pesticide Soil–Air Partition Coefficients: Laboratory Measurements and Predicted Effects on Volatilization

Vital Role of IPFT in Development of New-Generation Pesticide Formulation for Crop Protection: Advancement Overview in Asian Countries

Contact Info

Product

Resources

About