Support Strawberry Center, Cal Poly

4-Row Spray Rig Recommendation (Santa Maria & Oxnard) 

Our recommended manifold design is 8 nozzles per bed, spraying at a pressure of 108 psi. The recommended nozzle is Teejet Conejet Green TXR80036VK or an Albuz ATR80 Green with a hollow cone spray pattern. We evaluated this manifold design at a rate of 150 gpa and tractor speed of 2.88 mph. Results (n=25) show that using hollow cone Conejet nozzles, minimizing spray overlap, and positioning the nozzle closer to the canopy level can significantly increase coverage.

*Please note, proper maintenance, calibration, and spraying at canopy level ensures improved distribution uniformity and overall spray coverage. 

Continue reading for details on the design. 

Building a 4-Row Spray Rig

Components (Single Bed) 

Video: How to attach a spray manifold onto a tractor


Video: How to assemble a nozzle drop 


Video: How to attach a nozzle drop to a spray manifold 


Drawings & Downloads: 


Manifold Drawings: 

Design Schematic: 


Andrew Molinar 

  • California Strawberry Commission 
  • p. 805.340.8373

Caleb Fink 

  • California Strawberry Commission 
  • p. 805.471.2278



Related Content

Field Day 2024

Cal Poly Strawberry Field Day to be held August 8, 2024

Cal Poly Strawberry Field Day to be held August 8, 2024

Learn more


Learn about working at the Center, and more!

For students

Strawberry Disease Info Form

Form available in Español

Form and Info here

Follow our Blog

Cal Poly Strawberry Center research blog

Stay up-to-date with our research activities and findings

Subscribe here!