October 2019 - 24

RESEARCH
Figure 10. Three peat sources: coarse (left), medium (middle), or fine (right) compared with a wood fiber product (far right).
have as many small pores as peat, have a more even range of pore sizes,
and water is easily available for root uptake because water is not held as
tightly as peat. This means that water and air is more evenly distributed
in peat from the bottom to top of a container, whereas Oasis and
rockwool have a saturated zone at the bottom of a container but have
less water and more air at the top of the container.
PARTICLE AND PORE SIZE WITHIN A SUBSTRATE TYPE
Within any component, such as peat, there can be a wide range in
particle and resulting pore size (Figure 10). You may ask if adding a
component such as wood fiber to your peat substrate will make it a
" wetter " or " drier " mix. Figure 10 clearly shows the answer will depend
on the particle size and porosity of the wood component compared with
the specific peat source. Each component is like an ingredient in a pie,
and you can achieve similar air and water porosity characteristics by
understanding and blending the correct materials.
Acknowledgements: We thank our industry partners in the Floriculture
Research Alliance (floriculturealliance.org), Specialty Crops Research
Initiative, and Clean WateR3 from NIFA-USDA ARSfor supporting this
research and extension program. Imaging instrumentation was provided
by the University of Florida Herbert Wertheim College of Engineering's
Research Service Centers (RSC).
Paul Fisher is professor and Extension specialist, Erin Yafuso is Ph.D. research
assistant and Ana Bohorquez is postdoctoral associate at University of Florida.
Fisher can be reached at pfisher@ufl.edu.
My Passion. My Journey.
MY RIMOL
GREENHOUSE
Troy Miller, Troy's Landscape Supply
Over the past 26 years, Troy Miller has
watched his business grow into an iconic
landmark with a solid reputation as far as
50 miles in every direction. Troy's 12 bay
Matterhorn greenhouse, along with his freestanding
greenhouses and shade structures
are the foundation of his thriving, NY-based
landscaping supply and garden center.
READ MORE ABOUT TROY'S STORY AT
RIMOL.COM/TROYS
Matterhorn Greenhouse

http://www.floriculturealliance.org http://www.RIMOL.COM/TROYS

October 2019

Table of Contents for the Digital Edition of October 2019

October 2019 - 1
October 2019 - 2
October 2019 - 3
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October 2019 - 52
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