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Publication #SL 93

Pinellas County: Soil Ratings for Selecting Pesticides 1

G.W. Hurt A.G. Horsby, R.B. Brown,2

Resource soil scientists with the U. S. Soil Conservation Service have rated the soils that are delineated by map units in the Pinellas County Soil Survey Report for their potential for leaching and runoff of pesticides. The rating criteria are given in a companion EDIS publication Circular 959 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 959, 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 report. 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 the list below (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 Soil Conservation Service office should be contacted to perform an on-site evaluation of the land in question.

REFERENCES

Brown, R.B., A.G. Hornsby and G. W. Hurt. 1991. Soil Ratings For Selecting Pesticides For Water Quality Goals. Extension Circular 959, Cooperative Extension Service, Soil and Water Science Department, University of Florida, Gainesville, Florida, 32611. 5pp.

Vanatta, E.S., L.T. Stem, W.H. Wittstruck, D.E. Pettry and J.W. Spieth. 1972. Soil Survey of Pinellas County, Florida. USDA/NRCS in cooperation with University of Florida Agricultural Experiment Stations.

ACKNOWLEDGEMENTS

The development of this document was supported by the USDA/ES Water Quality Initiative Project # 89EWQI-1-9134.

Tables

Table 1. 

Soil ratings for Pinellas County.

MUID1

SYS NUM2

MUSYM3

SOIL NAME4

SOIL LEACH5

SOIL RUNOFF6

103Ad

1

Ad

ADAMSVILLE

High

Medium

103AfB

1

AfB

ASTATULA

High

Low

103AfC

1

AfC

ASTATULA

High

Low

103As

1

As

ASTATULA

High

Low

103At

1

At

ASTOR

Low

High

103Au

1

Au

ASTOR

Low

High

103Ch

1

Ch

CHARLOTTE

High

High

103Co

1

Co

COASTAL BEACHES

High

High

103Ed

1

Fd

ELRED

Low

High

103Fd

1

Fd

FELDA

Low

High

103Fe

1

Fe

FELDA

Low

High

103Fh

1

Fh

FELLOWSHIP

Low

High

103Im

1

Im

IMMOKALEE

Medium

High

103Ma

1

Ma

MADE LAND

Medium

Medium

103Md

1

Md

MADE LAND

High

High

103Mn

1

Mn

MANATEE

Low

High

103My

1

My

MYAKKA

Medium

High

103Ok

1

Ok

OKEECHOBEE

Medium

High

103Om

1

Om

OLDSMAR

Low

High

103Or

1

Or

ORLANDO VARIANT

High

Medium

103Pa

1

Pa

PALM BEACH

High

Low

103Pc

1

Pc

PAMLICO

Medium

High

103Pc

2

Pc

SAMSULA

Medium

High

103PdB

1

PdB

PAOLA

High

Low

103Pf

1

Pf

PINELLAS

Low

High

103Pn

1

Pn

PLACID

High

High

103Po

1

Po

POMELLO

Medium

Medium

103Pp

1

Pp

POMPANO

Medium

High

103Ps

1

Ps

POMPANO

Medium

High

103Sp

1

Sp

SPOIL BANK

Medium

Medium

103StB

1

StB

ST. LUCIE

High

Low

103StC

1

StC

ST. LUCIE

High

Low

103Su

1

Su

ST. LUCIE

High

Low

103Tc

1

Tc

TERRA CEIA

Medium

High

103Td

1

Td

TIDAL MARSH

Medium

High

103Ts

1

Ts

TIDAL SWAMP

Medium

High

103Ub

1

Ub

URBAN LAND

Medium

High

103Uc

1

Uc

URBAN LAND

High

High

103Uc

2

Uc

ASTATULA

High

High

103Uk

1

Uk

URBAN LAND

Medium

High

103Uk

2

Uk

IMMOKALEE

Medium

High

103Um

1

Um

URBAN LAND

Medium

High

103Um

2

Um

MYAKKA

Medium

High

103Up

1

Up

URBAN LAND

Medium

High

103Up

2

Up

POMELLO

Medium

Medium

103Uw

1

Uw

URBAN LAND

Low

High

103Uw

2

Uw

WABASSO

Low

High

103Wa

1

Wa

WABASSO

Low

High

103Wc

1

Wc

WAUCHULA

Low

High

1MUID = Natural Resources Conservation Service's map unit identifier.

2SEQ NUM = Sequence Number, indicating a particular soil name among one or more names constituting a map unit name.

3MUSYM = Map Unit Symbol from the soil map and legend in the Soil Survey of Pinellas 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.

4SOIL NAME = Name of soil or other landscape component (urban land, coastal beaches, made land, tidal marsh, tidal swamp, spoil bank, etc.).

5SOIL LEACH = The rating of the soil for leaching of pesticides through the soil profile.

6SOIL 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 Fact Sheet SL-93, a series 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 April 2000. Reviewed June 2013. Please visit the EDIS website at http://edis.ifas.ufl.edu

2.

G.W. Hurt, National Leader for Hydric Soils, Natural Resources Conservation Service, U.S. Department of Agriculture; A.G. Horsby, professor, and R.B. Brown, professor, Soil and Water Science Department, 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 UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.