From: Sharlynn Sweeney [mailto:[log in to unmask]]
Sent: Tuesday, January 30, 2018 4:32 PM
To: [log in to unmask]; Systems Ecology Listserv <[log in to unmask]>
Subject: W3 Seminar, Wed. Jan 31, 11:45 - Phosphorus management through sustainable agricultural practices


Water, Wetlands, and Watersheds Seminar
Jan 31th, 11:45am-12:30pm, Phelps Lab 101

Phosphorus management through sustainable agricultural practices
Jehangir “Jango” Bhadha
Assistant Professor, Soil and Water Sciences Department, UF
Everglades Research and Education Center (EREC), Belle Glade, Florida

Jango in the field

Soil sustainability, water conservation and nutrient management are the cornerstone of sustainable agriculture. In the Everglades Agricultural Area (EAA) of South Florida, farming practices have long been mindful of phosphorus (P) management as it relates to sufficiency and efficiency of P utilization. Over two decades of P best management practices have resulted in 3001 metric-ton of P load reduction from the EAA to downstream ecosystems. Research is being conducted on organic and sandy soils to improve efficiency of P uptake and minimize discharge loads. During the summer, more than 50,000 acres of fallow sugarcane land is available for rice production in the EAA. The net value of growing flooded rice in the EAA as a rotational crop with sugarcane far exceeds its monetary return. Soil conservation, pest control, and P load reduction are only some of the benefits. With no P fertilizer applied, cultivating flooded rice can be used as a treatment technology to reduce P loading from farmlands. The application of using locally derived organic amendments as potential P fertilizer has gained interest over the past few years. The use of local agricultural and urban organic residues as amendments in sandy soils of South Florida provide options to enhance soil properties and improve crop yields, while reducing waste and use of inorganic fertilizers. Future projects include the utilization of aquatic vegetation as bio-filters in farm ditches to reduce P load. This will be achieved by circulating high P concentration farm canal water through the ditches prior to being discharged off site. Optimizing the flow through the ditches will allow the aquatic vegetation to uptake P. The vegetation will ultimately be harvested and incorporated back on to the fields. This presentation shows that what’s good for the farmer can also be good for the environment.

Dr. Jehangir Bhadha joined the University of Florida Soil and Water Sciences Department as an Assistant Professor of Nutrient Management at the Everglades Research and Education Center (EREC) in Belle Glade, Florida. His research priorities are in the field of water quality, soil sustainability and sustainable agriculture. Bhadha received a B.S. from St. Xavier’s College, Mumbai, India, MS degree from UF (Geological Sciences) and PhD from the UF Soil and Water Sciences Department. Bhadha served two postdoctoral assignments, one in Gainesville and another at the EREC. In 2013 he was appointed as an Assistant Research Scientist at EREC, to conduct research on developing Best Management Practices to reduce phosphorus loads from farm canals in the Everglades Agricultural Area.

Please see our website for the seminar schedule and recordings of past seminars (

Sharlynn Sweeney, MLIS, PhD
Center for Environmental Policy and
Howard T. Odum Center for Wetlands
University of Florida