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St. Johns County: Soil Ratings for Selecting Pesticides1
G.W. Hurt and T.A. Obreza2RATINGS FOR ST. JOHNS COUNTY SOILS FOR PESTICIDE SELECTION
Resource soil scientists with the U. S. Natural Resources Conservation Service have rated the soils that are delineated by map units in the St. Johns County Soil Survey Report2 for their potential for leaching and runoff of pesticides. The rating criteria are given in a companion publication entitled "Soil Ratings for Selecting Pesticides for Water Quality Goals." These soil ratings have been developed to help pesticide users determine the potential for pesticides to be lost to groundwater or surface water bodies.As explained in Circular 9591, factors that determine pesticide leaching ratings in soil are permeability and the occurrence of mucky layers in the upper 80 inches of the soil. Soils rated High have a high potential for pesticides to leach to groundwater, soils rated Medium have a medium potential for pesticides to leach to groundwater, and soils rated Low have a low potential for pesticides to leach to groundwater. Factors that determine pesticide runoff ratings from soils are hydrologic group, permeability, and slope. Soils rated High have a high potential for pesticide runoff, soils rated Medium have a medium potential for pesticide runoff, and soils rated Low have a low potential for pesticide runoff.
NOTE: The user may discover that one or more map unit names in Table 1 have been updated from names given in the legend of the soil survey report2. For example, a soil map unit may be listed in the survey report with a single soil series name, whereas the same soil map unit is shown as comprising two or more soil series in Table 1 (sequence numbers 1, 2, 3, ..) Where this occurs, the user should use the multi-named map unit given here, and make pesticide selections based on the most limiting condition to be found on the land in question. If necessary, the local Natural Resources Conservation Service office should be contacted to perform an on-site evaluation of the land in question.
REFERENCES
- Obreza, T.A. and G. W. Hurt. 2006. Soil Ratings For Selecting Pesticides For Water Quality Goals. Circular 959, Soil and Water Science Department, Cooperative Extension Service, University of Florida, Gainesville, Florida, 32611. 5pp.
- Soil Survey of St. Johns County, Florida. USDA/NRCS in cooperation with University of Florida, Institute of Food and Agricultural Sciences, Agricultural Experiment Stations, Soil and Water Science Department and the Florida Department of Agriculture and Consumer Services.
ACKNOWLEDGMENTS
The development of this document was supported by the USDA/ES Water Quality Initiative Project # 89EWQI-1-9134.
Tables
Table 1. Soil Ratings for St. Johns County (see footnotes for explanations of column headings).
MUID
SYS NUM
MUSYM
SOIL NAME
SOIL LEACH
SOIL RUNOFF
109001 1 1 ADAMSVILLE High Medium 109002 1 2 ASTATULA High Low 109003 1 3 MYAKKA Medium High 109004 1 4 MYAKKA Medium High 109005 1 5 ST. JOHNS Medium High 109006 1 6 TAVARES High Low 109007 1 7 IMMOKALEE Medium High 109008 1 8 ZOLFO Medium Medium 109009 1 9 POMONA Low High 109011 1 11 SMYRNA Medium High 109012 1 12 ONA Medium High 109013 1 13 ST. JOHNS Medium High 109014 1 14 CASSIA Medium Medium 109015 1 15 POMELLO Medium Medium 109016 1 16 ORSINO High Low 109018 1 18 FLORIDANA Low High 109019 1 19 POMPANO High High 109021 1 21 WABASSO Low High 109022 1 22 MANATEE Low High 109023 1 23 PAOLA High Low 109024 1 24 PELLICER Low High 109025 1 25 PARKWOOD Low High 109026 1 26 SAMSULA Medium High 109027 1 27 ST. AUGUSTINE High Medium 109028 1 28 BEACHES High High 109029 1 29 SATELLITE High Medium 109030 1 30 WESCONNETT Medium High 109031 1 31 FRIPP High Low 109031 2 31 SATELLITE High Low 109032 1 32 PALM BEACH High Low 109033 1 33 JONATHAN Low Medium 109034 1 34 TOCOI Medium Medium 109035 1 35 HONTOON Medium High 109036 1 36 RIVIERA Low High 109038 1 38 PITS High High 109040 1 40 POTTSBURG Medium High 109041 1 41 TOMOKA Medium High 109042 1 42 BLUFF Low High 109044 1 44 SPARR Medium Medium 109045 1 45 ST. AUGUSTINE High Medium 109046 1 46 HOLOPAW Medium High 109047 1 47 HOLOPAW Medium High 109048 1 48 WINDER Low High 109049 1 49 MOULTRIE Medium High 109050 1 50 NARCOOSSE High Medium 109051 1 51 ST. AUGUSTINE High Medium 109051 2 51 URBAN LAND Medium High 109052 1 52 DURBIN Medium High 109053 1 53 IMMOKALEE Medium High 109053 2 53 URBAN LAND Medium High 109054 1 54 ASTATULA High Low 109054 2 54 URBAN LAND Medium High 109055 1 55 ARENTS High Low 109057 1 57 ADAMSVILLE High Medium 109058 1 58 EAUGALLIE Low High 109061 1 61 RIVIERA Low High 109062 1 62 FLORIDANA Low High 109063 1 63 PLACID High High 109064 1 64 ELLZEY Medium High 109065 1 65 RIVIERA Medium High 109066 1 66 TERRA CEIA Medium High 109067 1 67 TISONIA Low High 109068 1 68 WINDER Low Medium 109069 1 69 BAKERSVILLE Medium High 109072 1 72 WATER Footnotes: MUID = Natural Resources Conservation Service's map unit identifier. SEQ NUM = Sequence Number, indicating a particular soil name among one or more names constituting a map unit name. MUSYM = Map Unit Symbol from the soil map and legend in the Soil Survey of St. Johns County, Florida. Note that if a MUSYM appears more than once in this list it signifies that two or more soils are co-dominant in that map unit, and each such soil is rated separately here. SOIL NAME = Name of soil or other landscape component (urban land, beaches, pits, water, etc.). SOIL LEACH = The rating of the soil for leaching of pesticides through the soil profile. SOIL RUNOFF = The rating of the soil for runoff of pesticides from the soil surface. NOTE: See "Soil Ratings for Selecting Pesticides for Water Quality Goals" (IFAS Extension Circular 959) for explanations of the criteria used to develop soil ratings presented in the right-hand four columns of this list.
Footnotes
1. This document is SL95, a fact sheet of the Soil and Water Science Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: April 1991, revised September 2006. Please visit the EDIS Web site at http://edis.ifas.ufl.edu.2. G.W. Hurt, National Leader for Hydric Soils, Natural Resources Conservation Service, USDA; T.A. Obreza, Professor, Soil and Water Science Department, University of Florida, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611.
The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other extension publications, contact your county Cooperative Extension service.
U.S. Department of Agriculture, Cooperative Extension Service, University of Florida, IFAS, Florida A. & M. University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Larry Arrington, Dean.
Copyright Information
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