Lee County: Soil Ratings for Selecting Pesticides¹

G.W. Hurt and T.A. Obreza²

RATINGS FOR LEE COUNTY SOILS FOR PESTICIDE SELECTION

Resource soil scientists with the Florida USDA Natural Resources Conservation Service have rated the soils that are delineated by map units in the Lee County Soil Survey Report¹ 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 959², 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 report¹. 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

Henderson, W.G. Jr. 1984. Soil Survey of Lee County Area, 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.
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.

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 Lee County (see footnotes for explanations of column headings).

MUID	SYS NUM	MUSYM	SOIL NAME	SOIL LEACH	SOIL RUNOFF
71002	1	2	CANAVERAL	High	Medium
71004	1	4	CANAVERAL	High	Medium
71004	2	4	URBAN LAND	High	Medium
71005	1	5	CAPTIVA	High	High
71006	1	6	HALLANDALE	Medium	High
71007	1	7	MATLACHA	Medium	Medium
71007	2	7	URBAN LAND	Medium	High
71008	1	8	HALLANDALE	Medium	High
71009	1	9	EAUGALLIE	Low	High
71010	1	10	POMPANO	High	High
71011	1	11	MYAKKA	Medium	High
71012	1	12	FELDA	Medium	High
71013	1	13	BOCA	Low	High
71014	1	14	VALKARIA	High	High
71015	1	15	ESTERO	Low	High
71016	1	16	PECKISH	High	High
71017	1	17	DAYTONA	Low	Low
71018	1	18	MATLACA	Low	Medium
71019	1	19	GATOR	Low	High
71020	1	20	TERRA CEIA	Low	High
71022	1	22	BEACHES	High	High
71023	1	23	WULFERT	Low	High
71024	1	24	KESSON	Low	High
71025	1	25	ST. AUGUSTINE	High	Low
71025	2	25	URBAN LAND	High	High
71026	1	26	PINEDA	Low	High
71027	1	27	POMPANO	Medium	High
71028	1	28	IMMOKALEE	Medium	High
71029	1	29	PUNTA	Medium	High
71033	1	33	OLDSMAR	Low	High
71034	1	34	MALABAR	Low	High
71035	1	35	WABASSO	Low	High
71036	1	36	IMMOKALEE	Medium	High
71036	2	36	URBAN LAND	Medium	High
71037	1	37	SATELLITE	High	Low
71038	1	38	ISLES	Medium	High
71039	1	39	ISLES	Medium	High
71040	1	40	ANCLOTE	High	High
71041	1	41	VALKARIA	High	High
71042	1	42	WABASSO	Low	High
71043	1	43	SMYRNA	Medium	High
71044	1	44	MALABAR	Low	High
71045	1	45	COPELAND	Medium	High
71048	1	48	ST. AUGUSTINE	High	Medium
71049	1	49	FELDA	Medium	High
71050	1	50	OLDSMAR	Low	High
71051	1	51	FLORIDANA	Low	High
71053	1	53	MYAKKA	Medium	High
71055	1	55	COCOA	High	Low
71056	1	56	ISLES	Medium	High
71057	1	57	BOCA	Low	High
71059	1	59	URBAN LAND	Medium	High
71061	1	61	ORSINO	High	Low
71062	1	62	WINDER	Low	High
71063	1	63	MALABAR	Low	High
71064	1	64	HALLANDALE	Medium	High
71064	2	64	URBAN LAND	Medium	High
71066	1	66	CALOOSA	Low	Medium
71067	1	67	SMYRNA	Medium	High
71067	2	67	URBAN LAND	Medium	High
71069	1	69	MATLACHA	Medium	Medium
71070	1	70	HEIGHTS	Low	High
71072	1	72	BRADENTON	Low	High
71073	1	73	PINEDA	Low	High
71074	1	74	BOCA	Low	High
71075	1	75	HALLANDALE	High	High
71076	1	76	ELECTRA	Low	Medium
71077	1	77	PINEDA	Low	High
71078	1	78	CHOBEE	Low	High
71079	1	79	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 Lee County, Florida. Note that if a MUSYM appears more than once in this list it signifies that two or more soils are co-dominant that map unit, and each such soil is rated separately here.
SOIL NAME = Name of soil or other landscape component (urban land, beaches, 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

This document is SL84, 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. Reviewed September 2009. Please visit the EDIS Web site at http://edis.ifas.ufl.edu.

G.W. Hurt, National Leader for Hydric Soils, Natural Resources Conservation Service, USDA; T.A. Obreza, Professor, Soil and Water Science Department, 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. Nick T. Place, Dean.