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“Low-Dust” Harvesters (Code 376)

The Natural Resources Conservation Service is offering conservation assistance by encouraging California growers to use new and innovative agricultural emission reduction practices and technologies that provide significant environmental benefits to our natural resources.

The Field Operations Emissions Reduction practice standard improves air quality by implementing field operations and technologies from land preparation, planting, harvesting, and other field operations for reducing particulate matter (PM) emissions.  Improved surface harvesting equipment, referred to as “low-dust” harvesters or “clean harvest” pick-up machines, utilize designs and technologies that demonstrate PM reductions without causing negative impacts to product quality.

The Environmental Quality Incentive Program (EQIP) applies this practice towards the use of “low-dust” harvester equipment designed to reduce PM10 emissions by at least 30 percent over conventional surface harvesters, as demonstrated by available peer-reviewed information.  Each eligible application undergoes a screening and ranking process to consider the air quality benefits of any planned conservation practice, as identified by local, state and national priorities.  Offered statewide, proposals for using “low-dust” harvesters within any PM designated nonattainment area of California will receive a higher priority.

Program Guidelines:  376 – Field Operations Emissions Reduction

California growers must meet EQIP eligibility requirements to qualify for payments.  “Low-Dust” harvesters currently include the following makes and models:






Exact Corporation    


Pull-behind PTO

Reduced discharge air speed, and water misting and brush system at the separation fan discharge.


Pull-behind PTO

E-7000 SP    


Flory Industries    

Model 860    

Pull-behind PTO

Reduced fan speed, increased cleaning chain length, and relocation of dust discharge.

Model 8550


Model 8600    


Model 8700    


Model 8770    




Pull-behind PTO

“Constant Race” disk-based cleaning section.


9800 California Special   

Pull-behind PTO

Reduced fan speed, fan location, enlarged vacuum and separation chambers, and cleaning chain design.

9810 Harvester   

Pull-behind PTO

Magnum X  



This list is not in any way an endorsement by the USDA NRCS.  These manufacturers have demonstrated that their designs and technologies will reduce PM10 emissions by at least 30 percent over conventional surface-harvester machines.  Some in-use models may no longer be available from the manufacturer.  Any modifications or changes to the equipment are discouraged, as they could adversely impact the integrity of the PM control technology.  This list is subject to change as new designs, technology and information comes available.

  • Through a conservation plan, EQIP contracts and annual payments may be available for up to three years.
  • Because this treatment is a management practice, not available are payments for replacing conventional or purchasing new “low-dust” harvesters.  
  • This practice treatment applies to the surface harvesting of nut crops (e.g. almonds, walnuts and pecans).  Not applicable are “Conditioners” or other types of equipment associated with pre-harvest activities.
  • As deliverables, the producer provides NRCS with an annual report of all contracted “low-dust” harvester activities over the season.
  • The practice lifespan is one year.

For More Information

For more information about the Environmental Quality Incentives Program (EQIP), please contact your local USDA Service Center listed in the government section of the phone book under U.S. Department of Agriculture. Information is also available on the Internet at


Updated: 02/25/2019