Phosphorus removal from Everglades agricultural area runoff by submerged aquatic vegetation/limerock treatment technology: an overview of research

2001 ◽  
Vol 44 (11-12) ◽  
pp. 101-108 ◽  
Author(s):  
B. Gu ◽  
T.A. DeBusk ◽  
F.E. Dierberg ◽  
M.J. Chimney ◽  
K.C. Pietro ◽  
...  
Keyword(s):  
Submerged Aquatic Vegetation ◽  
Aquatic Vegetation ◽  
Scientific Data ◽  
South Florida ◽  
Treatment System ◽  
Agricultural Area ◽  
Advanced Treatment ◽  
Everglades Agricultural Area ◽  
Basin Scale ◽  
Treatment Technologies

The 1994 Everglades Forever Act mandates the South Florida Water Management District and the Florida Department of Environmental Protection to evaluate a series of advanced treatment technologies to reduce total phosphorus (TP) in Everglades Agricultural Area runoff to a threshold target level. A submerged aquatic vegetation/limerock (SAV/LR) treatment system is one of the technologies selected for evaluation. The research program consists of two phases. Phase I examined the efficiency of SAV/LR treatment system for TP removal at the mesocosm scale. Preliminary results demonstrate that this technology is capable of reducing effluent TP to as low as 10 μg/L under constant flows. The SAV component removes the majority of the influent soluble reactive P, while the limerock component removes a portion of the particulate P. Phase II is a multi-scale project (i.e., microcosms, mesocosms, test cells and full-size wetlands). Experiments and field investigations using various environmental scenarios are designed to (1) identify key P removal processes; (2) provide management and operational criteria for basin-scale implementation; and (3) provide scientific data for a standardized comparison of performance among advanced treatment technologies.

scholarly journals Best Management Practices in the Everglades Agricultural Area: Fertilizer Spill Prevention

EDIS ◽  
2019 ◽  
Vol 2005 (14) ◽  
Author(s):  
Orlando A. Diaz ◽  
Samira H. Daroub ◽  
Ronald W. Rice ◽  
Timothy A. Lang ◽  
Ming Chen
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
Management Practice ◽  
South Florida ◽  
Agricultural Area ◽  
Publication Date ◽  
Everglades Agricultural Area ◽  
Best Management ◽  
Current Implementation ◽  
Implementation Guidelines

Phosphorus fertilizer spill prevention is a Best Management Practice (BMP) approved by the South Florida Water Management District (SFWMD), one designed to reduce drainage P loads in the Everglades Agricultural Area (EAA). Spill prevention of P fertilizers is a BMP that is widely implemented by growers in the EAA. This BMP is easily implemented and can have an immediate impact on reducing off-farm P loads. This EDIS document is part of a series of publications that provide current implementation guidelines for commonly employed farm-level BMPs designed to reduce P loads from farms located within the EAA basin. This document is SL231, one of a series of the Department of Soil and Water Sciences, UF/IFAS Extension. Original publication date September 2005. SL231/SS450: Best Management Practices in the Everglades Agricultural Area: Fertilizer Spill Prevention (ufl.edu)

Confirmation, Characterization, and Management of Glyphosate-Resistant Ragweed Parthenium (Parthenium hysterophorus L.) in the Everglades Agricultural Area of South Florida

2015 ◽  
Vol 29 (2) ◽  
pp. 233-242 ◽  
Author(s):  
Jose V. Fernandez ◽  
Dennis C. Odero ◽  
Gregory E. MacDonald ◽  
Jason Ferrell ◽  
Lyn A. Gettys
Keyword(s):  
Weed Control ◽  
Dose Response ◽  
Glyphosate Resistance ◽  
South Florida ◽  
Agricultural Area ◽  
Complete Control ◽  
Everglades Agricultural Area ◽  
Significant Difference ◽  
Lack Of Control ◽  
Treated Leaf

Growers have observed lack of control of ragweed parthenium with glyphosate at 0.84 kg ae ha−1 used for weed control in noncrop areas and fallow fields in the Everglades Agricultural Area (EAA) of South Florida. Therefore, studies were conducted to (1) confirm and characterize the level of glyphosate resistance in ragweed parthenium from the EAA, (2) determine if reduced absorption or translocation is the mechanism of resistance of ragweed parthenium to glyphosate, and (3) evaluate the efficacy of POST herbicides commonly used in cultivated and noncrop areas for broadleaf weed control on flowering ragweed parthenium at the full and half labeled rate. A dose-response bioassay was used to determine the response of the rosette ragweed parthenium biotype from the EAA (resistant) and a susceptible biotype from Stoneville, MS, to glyphosate. The bioassay showed that the resistant biotype was 40- to 43-fold less sensitive to glyphosate when compared to the susceptible biotype. There was no significant difference in glyphosate absorption or translocation from the treated leaf to the rest of the plant 168 h after treatment between resistant and susceptible biotypes. This shows that absorption or translocation is not a mechanism of glyphosate resistance by ragweed parthenium. Saflufenacil + dimethenamid-P and hexazinone provided rapid and complete control of flowering ragweed parthenium 3 wk after treatment (WAT). Aminocyclopyrachlor + chlorsulfuron and aminopyralid at the full and the half label rates provided 100% control of ragweed parthenium by 9 WAT. Clopyralid, 2,4-D amine, and glufosinate at the full label rate provided 89 to 98% control of ragweed parthenium 9 WAT. Control of ragweed parthenium 9 WAT was < 75% with flumioxazin, fomesafen, glyphosate, imazapic, imazethapyr, mesotrione, oxyfluorfen, and paraquat, irrespective of use rate.

scholarly journals Best Management Practices in the Everglades Agricultural Area: Controlling Particulate Phosphorus and Canal Sediments

EDIS ◽  
2019 ◽  
Vol 2005 (11) ◽  
Author(s):  
Orlando A. Diaz ◽  
Timothy A. Lang ◽  
Samira H. Daroub ◽  
Ming Chen
Keyword(s):  
Best Management Practices ◽  
Management Practices ◽  
South Florida ◽  
Agricultural Area ◽  
Particulate Phosphorus ◽  
Publication Date ◽  
Sediment Control ◽  
Everglades Agricultural Area ◽  
Best Management ◽  
Sediment Loads

The South Florida Water Management District has developed a BMP table that lists the BMP practices that have been designed to reduce particulate P and sediment loads in drainage waters from Everglades Agricultural Area (EAA) farms. The purpose of this document is to explain and discuss these particulate P and sediment control practices. These practices serve as important tools in efforts to improve water quality in the basin. This EDIS article is one in a series that attempts to explain in easily understandable terms the implementation methods and rationale behind the main P load reducing BMPs employed on EAA farms. This document is SL228, a fact sheet of the Soil and Water Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Original publication date August 2005. SL228/SS448: Best Management Practices in the Everglades Agricultural Area: Controlling Particulate Phosphorus and Canal Sediments (ufl.edu)

Progress in the research and demonstration of Everglades periphyton-based stormwater treatment areas

2001 ◽  
Vol 44 (11-12) ◽  
pp. 123-130 ◽  
Author(s):  
J.S. Bays ◽  
R.L. Knight ◽  
L. Wenkert ◽  
R. Clarke ◽  
S. Gong
Keyword(s):  
Water Depth ◽  
Phase 1 ◽  
South Florida ◽  
Advanced Treatment ◽  
Stormwater Treatment ◽  
The South ◽  
Stormwater Treatment Areas ◽  
Treatment Technologies ◽  
Test Cells ◽  
Total P

The South Florida Water Management District (District) is conducting research focused on potential advanced treatment technologies to support reduction of phosphorus (P) loads in surface water entering the remaining Everglades. Periphyton-based stormwater treatment areas (PSTA) are one of the advanced treatment technologies being researched by the District. This detailed research and demonstration project is being conducted in two phases. Basic research in field-based mesocosm experiments was conducted during the first phase within the District's Everglades Nutrient Removal Project (ENR). Studies were conducted in 24 portable PSTA mesocosms and three of the south ENR test cells. Phase 1 studies addressed the effects of system substrate (shellrock, organic peat, or sand), water depth, hydraulic loading rate, vegetation presence, depth:width ratio, and inhibition of algal growth on total phosphorus removal performance of the PSTA mesocosms. A second phase of research is currently under way, during which PSTA feasibility will be evaluated further in four field-scale constructed mesocosms totaling about 2 ha, and follow up studies within the ENR test cells and portable mesocosms will be conducted to further investigate the effects of other inorganic substrates, shallow water depth, and velocity on treatment performance. Phase 1 monitoring has determined that periphyton-dominated communities can be established in constructed wetlands within 5 months. The algal component of these periphyton plant communities is characteristic of natural Everglades periphyton. High macrophyte densities resulted from use of peat soils in PSTA mesocosms, while shellrock and sand soils promoted more desirable sparse macrophyte stands. P removal rates under the conditions of this research were relatively high considering the low influent total P concentrations tested (average 23 μg/L). PSTA mesocosms on shellrock soils were able to attain long-term average outflow total P concentrations as low as 11 μg/L. The maximum one-parameter TP first-order removal rate constant (k1) measured was 27 m/y. Minimum attainable outflow total P concentrations and mass removals appear to be the result of a balance between internal P loading from antecedent soils, uptake and burial processes in new sediments, and rainfall inputs. A different soil type (limerock) will be tested for effectiveness during Phase 2. Selected existing treatments will also be continued to look for trends over a second growing season.

scholarly journals Anurans of the Everglades Agricultural Area

EDIS ◽  
1969 ◽  
Vol 2005 (1) ◽  
Author(s):  
Michelle L. Casler ◽  
Wendy M. Bear ◽  
Elise V. Pearlstine ◽  
Frank J. Mazzotti
Keyword(s):  
South Florida ◽  
Agricultural Area ◽  
University Of Florida ◽  
Wildlife Ecology ◽  
Everglades Agricultural Area

This is a guide to frogs and toads in south Florida. This is document Cir 1463, one of a series in the Department of Wildlife Ecology and Conservation, University of Florida. Published December 2004.  Cir 1463/UW210: Anurans of the Everglades Agricultural Area (ufl.edu)

scholarly journals Eight species of Poaceae are hosting different genetic and pathogenic strains of Sugarcane mosaic virus in the Everglades Agricultural Area

2021 ◽  
Author(s):  
Martha Hincapie ◽  
Sushma Sood ◽  
Dimitre Mollov ◽  
Calvin Odero ◽  
Michael Grisham ◽  
...  
Keyword(s):  
Mosaic Virus ◽  
South Florida ◽  
Sugarcane Mosaic Virus ◽  
Agricultural Area ◽  
Coding Region ◽  
Phylogenetic Groups ◽  
Entire Genome ◽  
Everglades Agricultural Area ◽  
The Usa ◽  
Virus Isolates

Sugarcane mosaic virus (SCMV) was detected by reverse-transcription polymerase chain reaction in eight different species of the Poaceae family in the Everglades Agricultural Area (EAA) of south Florida: Broadleaf signalgrass (Urochloa platyphylla), Columbus grass (Sorghum almum), goosegrass (Eleusine indica), maize (Zea mays), sorghum (Sorghum bicolor), St. Augustine grass (Stenotaphrum secundatum), southern crabgrass (Digitaria ciliaris), and sugarcane (Saccharum interspecific hybrids). Based on their coat protein (CP) gene sequence, 62 isolates of SCMV from Florida and 29 worldwide isolates representing the known genetic diversity of this virus were distributed into eight major phylogenetic groups. SCMV isolates infecting Columbus grass, maize, and sorghum in Florida formed a unique group whereas virus isolates infecting sugarcane in the USA (Florida and Louisiana) clustered with isolates from other countries. Based on the entire genome coding region, SCMV isolates infecting sugarcane in Florida were closest to virus isolates infecting sorghum species or St. Augustine grass. Virus isolates from Columbus grass, St. Augustine grass, and sugarcane showed different virulence patterns after mechanical inoculation of Columbus grass, St. Augustine grass, and sugarcane plants, thus proving that these isolates were different pathogenic strains. Sugarcane was symptomless and tested negative for SCMV by tissue blot immunoassay after inoculation with crude sap from SCMV-infected Columbus grass, indicating that Columbus grass was not a reservoir for SCMV infecting sugarcane in the EAA. Close CP sequence identity between isolates of SCMV from Columbus grass, maize, and sorghum suggested that the same virus strain was naturally spreading among these three plants in south Florida.

Evaluation of Lettuce Cultivars for Production on Muck Soils in Southern Florida

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
German Sandoya ◽  
Huangjun Lu
Keyword(s):  
South Florida ◽  
Agricultural Area ◽  
Organic Soils ◽  
Everglades Agricultural Area ◽  
Commercial Crop ◽  
Southern Florida

Lettuce as a commercial crop is planted mainly in organic soils ("muck") in the Everglades Agricultural Area (EAA) in south Florida. This updated publication of the UF/IFAS Horticultural Sciences Department presents a summary of previous cultivar releases by UF/IFAS as well as a description of cultivars currently planted in the EAA. Written by German Sandoya and Huangjun Lu.https://edis.ifas.ufl.edu/hs1225

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