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Coalition for Urban/Rural Environmental StewardshipCoalition for Urban/Rural Environmental Stewardship • Non-profit organization: agricultural, urban projectsNon-profit organization: agricultural, urban projects• Promote stewardship, proper use of pesticides, nutrientsPromote stewardship, proper use of pesticides, nutrients• Parry Klassen, Executive DirectorParry Klassen, Executive Director• Tamara Taliaferro, Projects CoordinatorTamara Taliaferro, Projects Coordinator• Robert McMurry, Sprayer Calibration TechnicianRobert McMurry, Sprayer Calibration Technician• www.curesworks.orgwww.curesworks.org
Butte County Resource Conservation DistrictButte County Resource Conservation District Pia Sevelius, District ManagerPia Sevelius, District Manager Larry Lloyd, Resource TechnicianLarry Lloyd, Resource Technician www.buttecountyrcd.orgwww.buttecountyrcd.org
Schedule On-Farm Schedule On-Farm Sprayer CalibrationsSprayer Calibrations Equipment and technician come Equipment and technician come
Potential Practices Potential Practices (need more research)(need more research)
Let grass grow in Let grass grow in drainage ditchesdrainage ditches
Circulate drain Circulate drain water through water through vegetated ditches vegetated ditches or field areasor field areas
Circulate drain Circulate drain water through water through constructed constructed wetlandswetlands
Integrated Pest Management: Integrated Pest Management: OrchardsOrchards
Determine need to dormant sprayDetermine need to dormant spray Selection of dormant season pest Selection of dormant season pest
management strategiesmanagement strategies No dormant spray, in-season spray as needed No dormant spray, in-season spray as needed OP dormant applications with BMPsOP dormant applications with BMPs Alternate year dormant applications: a 50% reduction?Alternate year dormant applications: a 50% reduction? Bt sprays at bloomBt sprays at bloom Spinosad + oil as dormant spraySpinosad + oil as dormant spray Non-OP pesticides as dormant sprays (pyrethroids)Non-OP pesticides as dormant sprays (pyrethroids) Pheromone mating disruptionPheromone mating disruption www.ipm.ucdavis.edu : On-line calculatorwww.ipm.ucdavis.edu : On-line calculator
FREE FILTER STRIPS!FREE FILTER STRIPS!
Butte County Resource Conservation Butte County Resource Conservation District is offering to install filter strips for District is offering to install filter strips for FREE.FREE.
Scheduling appointments with interested Scheduling appointments with interested growers in Novembergrowers in November
Please call:Please call:
(530) 534-0112 ext. 124(530) 534-0112 ext. 124
Orchard Filter Orchard Filter StripsStrips
Water Board grants in Butte-Yuba-Sutter counties
Study orchard vegetation effectiveness
Install free filter strips
Cooperators
Sutter County Resource Conservation District
Coalition for Urban/Rural Environmental Stewardship
Butte County Resource Conservation District
What are “Filter Strips”What are “Filter Strips”
Strips or areas of herbaceous vegetation Strips or areas of herbaceous vegetation situated between orchard and …situated between orchard and … Environmentally Sensitive areas (steams, rivers, Environmentally Sensitive areas (steams, rivers,
wetlands, riparian areas, etc.) wetlands, riparian areas, etc.) Other croplandOther cropland grazing landgrazing land forestlandforestland disturbed landdisturbed land
Biggest benefit to orchard growers:Biggest benefit to orchard growers:
from orchards from orchards Reduce erosionReduce erosion Improve water penetration into soilImprove water penetration into soil Habitat biodiversity for beneficial insects Habitat biodiversity for beneficial insects
Other Benefits of Filter StripsOther Benefits of Filter Strips Improve water quality by removing… Improve water quality by removing…
75% or more of sediment75% or more of sediment 50% or more of nutrients & pesticides 50% or more of nutrients & pesticides 60% or more of certain pathogens60% or more of certain pathogens
Provide habitat for wildlife & beneficial Provide habitat for wildlife & beneficial insectsinsects
Maintain or enhance watershed functions Maintain or enhance watershed functions & values& values
Ideal LocationsIdeal Locations-- Lower edges (down-gradient edge) of orchards or crop fields where runoff occurs-- Lower edges (down-gradient edge) of orchards or crop fields where runoff occurs-- Above conservation practices, such as ponds, drainageways, and terraces-- Above conservation practices, such as ponds, drainageways, and terraces
equipment does not damage sensitive areasequipment does not damage sensitive areas agrichemicals and manure can be safely agrichemicals and manure can be safely
applied without affecting sensitive areasapplied without affecting sensitive areas
Filter Strip VegetationFilter Strip Vegetation
Desirable VegetationDesirable Vegetation Plants with dense top-growth and a Plants with dense top-growth and a
Filter Strip MaintenanceFilter Strip MaintenanceNecessary for long-term effectiveness and durabilityNecessary for long-term effectiveness and durability
Mow and remove excessive vegetation regularly Mow and remove excessive vegetation regularly 2-3 times per year if growth is vigorous2-3 times per year if growth is vigorous Mow to 6-inchesMow to 6-inches Control unwanted trees, brush and noxious weedsControl unwanted trees, brush and noxious weeds
Inspect after major stormsInspect after major storms Remove trapped sedimentRemove trapped sediment Repair eroding areasRepair eroding areas Minimize development of erosion channelsMinimize development of erosion channels
Shut off pesticide sprayers when on filter stripShut off pesticide sprayers when on filter strip
FREE FILTER STRIPS!FREE FILTER STRIPS!
Butte County Resource Conservation Butte County Resource Conservation District is offering to install filter strips for District is offering to install filter strips for FREE.FREE.
Scheduling appointments with interested Scheduling appointments with interested growers in Novembergrowers in November
Goal: Study impact of orchard floor Goal: Study impact of orchard floor management practices on diazinon and management practices on diazinon and esfenvalerate runoff during major stormesfenvalerate runoff during major storm
3 test orchards draining into Gilsizer 3 test orchards draining into Gilsizer Slough in Sutter CountySlough in Sutter County One with vegetated cover cropOne with vegetated cover crop One with bare groundOne with bare ground One disked with native vegetationOne disked with native vegetation
Cover Crop Effectiveness Study Cover Crop Effectiveness Study Overall ResultsOverall Results
Ground cover and soil type affected the Ground cover and soil type affected the loads of diazinon and esfenvalerate in loads of diazinon and esfenvalerate in runoffrunoff Orchard with planted cover had far less water Orchard with planted cover had far less water
runoff than orchard with bare ground.runoff than orchard with bare ground. Vegetation reduced the concentration of Vegetation reduced the concentration of
esfenvalerate in runoff.esfenvalerate in runoff.
Study ResultsStudy Results
Runoff From Rainfall Event in Three Orchards
0
20000
40000
60000
80000
100000
120000
140000
160000
180000
Planted Cover Crop Bare Ground Disked Plot
Orchard Floor
Ru
no
ff (L
iters
/Hec
tare
)
Average Diazinon Load in Runoff From Rainfall Event
0
1000000
2000000
3000000
4000000
5000000
6000000
Planted Cover Crop Bare Ground Disked Plot
Orchard Floor
Dia
zin
on
Lo
ad (
µg D
iazi
no
n/H
ecta
re)
Average Esfenvalerate Load in Runoff From Rainfall Event