<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 14pt; color: rgb(0, 0, 0);">
<b><i>"Quantifying Pesticide Fate and Transport in South Florida Agriculture Areas"</i></b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 14pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 14pt; color: rgb(0, 0, 0);">
<b>Wei Mao</b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Postdoctoral Researcher,</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Department of Earth, Ocean, and Atmospheric Science (EOAS),</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Florida State University (FSU) </div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Please feel free to forward/share this invitation with other groups/disciplines that might be interested in this talk/topic. All are welcome to attend. </div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
NOTE: In-person attendance is requested in our 499 Dirac Science Library (DSL) Seminar Room. Zoom access is intended for external (non-departmental) participants only. </div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<b>https://fsu.zoom.us/j/94273595552 </b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Meeting # <b>942 7359 5552 </b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
🎦 Colloquium recordings will be made available here, <a href="https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sc.fsu.edu%2Fcolloquium&data=05%7C02%7Csc-seminar-announce%40lists.fsu.edu%7C3b7b858c36e14d9dec8d08ddf9d1a8d8%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638941401058305266%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=ac6ViovcIluEdHD%2F38z%2FHM6qixkEi6OmI6ou2cyu9kg%3D&reserved=0" originalsrc="https://www.sc.fsu.edu/colloquium">
https://www.sc.fsu.edu/colloquium</a> </div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<b>Wednesday, Sep 24, 2025, Schedule: </b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
* 3:00 to 3:30 PM Eastern Time (US and Canada) </div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
☕ Nespresso & Teatime - 417 DSL Commons </div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<b>* 3:30 to 4:30 PM Eastern Time (US and Canada) </b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<b>🕟 Colloquium - 499 DSL Seminar Room </b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<b>Abstract: </b></div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Agriculture is a cornerstone of Florida’s economy, particularly in South Florida. However, intensive farming practices are closely tied to heavy pesticide use, raising concerns about water quality. Chlorothalonil, a broad-spectrum fungicide widely applied in
the region, has an uncertain environmental fate and transport behavior. In particular, the key processes and parameters governing its movement and transformation in natural systems remain poorly understood.</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
In this study, we applied the U.S. EPA’s Pesticide in Water Calculator (PWC) to simulate the transport of chlorothalonil and its major transformation product from land surface to shallow groundwater and adjacent drainage ditch. The model accounts for precipitation–runoff,
erosion, crop growth, evapotranspiration, soil water movement, and pesticide degradation in soil, surface water and sediment. We calibrated the hydrological module against field data collected in South Florida during spring 2025, achieving satisfactory model
performance. Scenario analyses of pesticide applications were then conducted to evaluate pesticide fate under different management conditions. To further address the complexity of reactive transport in natural systems, we are developing a Bayesian network–based
global sensitivity framework.</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Overall, this research provides quantitative insights into contamination risks to local water resources and advances our understanding of the environmental drivers and transport mechanisms in this vulnerable agricultural region.</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Additional colloquium details can be found here,</div>
<div class="elementToProof" style="font-family: Tahoma, Geneva, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<a href="https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.sc.fsu.edu%2Fnews-and-events%2Fcolloquium%2F1881-colloquium-with-wei-mao-2025-09-24&data=05%7C02%7Csc-seminar-announce%40lists.fsu.edu%7C3b7b858c36e14d9dec8d08ddf9d1a8d8%7Ca36450ebdb0642a78d1b026719f701e3%7C0%7C0%7C638941401058331585%7CUnknown%7CTWFpbGZsb3d8eyJFbXB0eU1hcGkiOnRydWUsIlYiOiIwLjAuMDAwMCIsIlAiOiJXaW4zMiIsIkFOIjoiTWFpbCIsIldUIjoyfQ%3D%3D%7C0%7C%7C%7C&sdata=9P%2BJG4SQdByATrAup55K2E4m7hog0kn5H2cfN0xyILs%3D&reserved=0" originalsrc="https://www.sc.fsu.edu/news-and-events/colloquium/1881-colloquium-with-wei-mao-2025-09-24">https://www.sc.fsu.edu/news-and-events/colloquium/1881-colloquium-with-wei-mao-2025-09-24</a></div>
</body>
</html>