Pesticide Drift. I. High-Clearance vs. Aerial Application of Sprays1

Ware, George W.; Estesen, B. J.; Cahill, W. P.; Gerhardt, Paul D.; Frost, K. R.

doi:10.1093/jee/62.4.840

Cited by 16 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The copyright holder for this preprint this version posted October 9, 2021. ; https://doi.org/10.1101/2021.10.07.463581 doi: bioRxiv preprint higher than that produced by ground sprayers (Ware et al 1969). This might be because aerial fumigation has heightened effects on small streams and ponds, as they are hard to avoid when crops and wetlands share a common boundary (Hill 2003).…”

Section: Discussionmentioning

confidence: 99%

“…The scale of this agricultural runoff can be large in the GoM, because fertilization and application of pesticides are not only carried out with ground sprayers, but also from airplanes. Wetlands are known to be routinely contaminated by pesticides and fertilizers on adjacent agricultural areas (Alho and Vieira 1997;Donald et al 1999;Hill 2003;Hernández-Romero et al 2004), however the downwind drift from the aerial application has been estimated to be more than four times higher than that produced by ground sprayers (Ware et al 1969). This might be because aerial fumigation has heightened effects on small streams and ponds, as they are hard to avoid when crops and wetlands share a common boundary (Hill 2003).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Modelling the effects of land use on mangroves in a RAMSAR site of Panamá

López-Angarita¹,

Tilley²,

Díaz³

2021

Preprint

View full text Add to dashboard Cite

The role of mangroves as pivotal providers of ecosystem services has been widely acknowledged. In Latin America, mangroves play an important role in traditional coastal livelihoods, but the growing economy of these nations demands the expansion of land for development, putting pressure in ecosystems such as mangroves. Here we examine the impact of land use activities on mangroves in the Gulf of Montijo, a RAMSAR site located in the Pacific coast of Panama. Spatial information of land use was analysed, ground-truthed and classified into agriculture, aquaculture and coastal development, and subsequently ranked according to estimated level of impact on mangroves based on 27 interviews with local informants. We developed a spatially-referenced cumulative impact model of human activities on mangroves. Results showed that despite the protection status of the Gulf of Montijo, its mangrove forests are affected by localised human activities, dominated by agriculture. Given the importance of fishing for local livelihoods, evaluating the effects of agriculture, rice in particular, on mangroves and their associated fauna will be essential for the sustainable management of this RAMSAR site.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Modelling the effects of land use on mangroves in a RAMSAR site of Panamá

López-Angarita¹,

Tilley²,

Díaz³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…As the drifting spray is largely composed of droplets with a diameter lower than 100 µm [42], other methodologies must be employed to assess smaller dimensions. As reported in the literature, a good option is the cascade impactor [42][43][44][45][46]. This instrument is an active aerosol sampler composed of (1) an inlet, which samples all the particles of the aerosol, (2) several sequential stages that collect specific decreasing dimensional classes by inertial impact on surfaces, and…”

Section: Introductionmentioning

confidence: 99%

Wind Tunnel Evaluation of Plant Protection Products Drift Using an Integrated Chemical–Physical Approach

Becce,

Mazzi,

Ali

et al. 2024

Atmosphere

View full text Add to dashboard Cite

The use of plant protection products (PPPs) has become fundamental to guarantee excellent field productivity. Nevertheless, their usage presents critical issues, such as the quantity of substances used, the relative toxicity, and the contamination of nearby fields caused by atmospheric drift. This study focuses on the characterization of aerosol droplets of PPPs produced by spraying a chemical marker, fluorescein, with an orchard airblast sprayer equipped with conventional hollow cone (HC) and anti-drift air inclusion (AI) nozzles, using a wind tunnel as a controlled environment. A particle/droplet image analysis was employed to study the droplet production of the nozzles, while a liquid chromatography tandem mass spectrometry (HPLC-MS/MS) analysis allowed us to evaluate samples collected using a cascade impactor located at 5 m, 10 m, and 20 m from the emission point. Overall, HC nozzles are very accurate at producing specific drop size distributions (DSDs), while AI nozzles produce a much wider DSD, concentrating the largest part of the distributed volume into droplets of a larger size. The marker concentration was much lower for the AI nozzles compared to the HC nozzles; moreover, the two nozzles show a similar trend in the coarse droplet range, while significantly differing in the fine droplet spectrum.

show abstract

“…O custo das análises, a disponibilidade de equipamento analítico e a precisão desejada para os resultados representam fatores importantes na escolha de um determinado traçador para realização dos ensaios. Alguns pesquisadores têm utilizado como traçador os próprios inseticidas (Ware et al, 1969a(Ware et al, , 1969bWare et al, 1970aWare et al, , 1970b, partículas fluorescentes como ZnCaS (Murray & Vaughan, 1970), agrotóxicos marcados (Maybank et al, 1974), radioisótopos (Dobson et al, 1983), corantes fluorescentes (Liljedahl & Strait, 1959;Yates & Akesson, 1963;Fox et al, 1990;Salyani & Cromwell, 1992) e corantes de alimentos (Pergher et al, 1997). Quantick (1985) cita os principais métodos para análise de recuperação de químicos em experimentos relacionados às téc-nicas de aplicação.…”

unclassified

Método para monitorar perdas na aplicação de agrotóxicos na cultura de tomate

Chaim

Castro

Corrales

et al. 1999

Pesq. agropec. bras.

View full text Add to dashboard Cite

RESUMO -A metodologia disponível para análise de resíduos é muito onerosa para ser usada em estudos de perdas em aplicações de agrotóxicos. Assim, o uso de caldas de pulverização marcadas com traçadores facilmente detectáveis, tem se tornado uma prática amplamente aceita. O objetivo deste trabalho foi avaliar um método de monitoramento das deposições de agrotóxico, caracterizado pelo uso de calda marcada com traçador, e técnica especial de amostragem. Empregou-se o cobre como traçador, na forma de fungicida, cuja análise espectrofotométrica é de baixo custo, fácil execução, além de possibilitar um excelente nível de recuperação. Utilizaram-se cartões de papel mata-borrão como alvo artificial para amostrar as gotas. Cartões grampeados em barbantes, em distâncias preestabelecidas, foram colocados sobre as plantas, possibilitando uma amostragem estratificada por alturas. No solo, os cartões foram colocados sobre placas-de-petri. Para as condições do experimento, o método testado permitiu detectar que, dependendo do porte das plantas, as perdas das aplicações foram da ordem de 59 a 76%.Termos para indexação: método de avaliação de perdas, traçador cúprico, calda de pulverização. METHOD TO ASSESSMENT THE SPRAYING LOSSES OF PESTICIDE IN TOMATO CROPSABSTRACT -The available methodology for pesticide residues analysis is very expensive to be used on spraying losses studies and occupational exposure assessment during pesticide application. So, the marking of spray liquids prior to dispersion with easily detectable tracers has become widely accepted practice. The objective of this research was to evaluate a method to assessment the pesticide deposition, characterised by the use of a tracer marked spray liquid and a special sampling technique. The tracer used in this work was the copper, in a fungicide formulation, with low cost and easy atomic absorption spectrophotometric analysis. Cards of blotter-like papers were used as artificial target to catch the droplets. Cards were clipped on cotton strings at constant distances and were disposed on plants possibiliting a height stratified sampling. Cards on Petri dishes are used upon the soil. Between 59 and 76% of the spray were lost according to plant height.Index terms: loss assessment method, spray liquid, cupric tracer. erva daninha. A contaminação do meio ambiente por perdas de agrotóxicos para áreas não-alvos tem provocado críticas severas ao uso desses produtos e causado grandes preocupações, quando são noticiados seus efeitos nocivos.Quando se pulveriza uma cultura, muitas gotas caem entre a folhagem especialmente nos espaços entre as plantas, e atingem o solo. As que se chocam com a folhagem podem coalescer-se com tal intensidade que não conseguem mais ficar retidas, escorrendo para as folhas inferiores, atingindo posteriormente o solo. Esse tipo de pulverização que provoca o escorrimento tem sido recomendado, em muitas ocasiões, para assegurar uma completa cobertu-1 Aceito para publicação em 17 de agosto de 1998.

show abstract

Pesticide Drift. I. High-Clearance vs. Aerial Application of Sprays1

Cited by 16 publications

References 0 publications

Modelling the effects of land use on mangroves in a RAMSAR site of Panamá

Modelling the effects of land use on mangroves in a RAMSAR site of Panamá

Wind Tunnel Evaluation of Plant Protection Products Drift Using an Integrated Chemical–Physical Approach

Método para monitorar perdas na aplicação de agrotóxicos na cultura de tomate

Contact Info

Product

Resources

About