c
hemical
d
ilution
(
for
f
umiGation
)
"UlV" - s
Ummary
ULV
(Ultra Low Volume) refers to the amount of water needed to mix and disperse chemical solution evenly.
Typical sprayers use small water droplets to carry the chemical solution to its intended source. That spraying
process requires much more water than a ULV method to treat an equal amount of area.
CRSM's
atomization process produces billions of tiny fog particles laced with chemical. These fog particles are
propelled with great force and quickly evaporate out most of their water content, leaving behind small particles
of pure chemical residue. These airborne micro-sized particles of residue will float in all directions until eventu-
ally making contact and coating most surfaces evenly.
Conventional spraying requires:
about 3.5 gallons of water / every 1,000 square feet of greenhouse.
Low-Volume application requires:
about 0.25 gallons of water / every 1,000 square feet.
crsm D
ilUtion
7
1.
Determine the square footage of the area to be treated.
2.
Refer to the chemical's label to determine its dilution formula:
(A)
Pounds of chemical needed per acre
(B)
Ounces of chemical per 100 gallons of water applied by conventional spray nozzles
If (A)
Convert the pounds into ounces. Divide the ounces by 4.36 [43,560 sq. ft. per acre].
This will determine the amount of chemical needed to cover 10,000 square feet.
Example:
A chemical labeled at 2 pounds per acre.
2 lbs. x 16 ozs. = 32 ozs. ÷ 4.36 = 7.33 ozs. per 10,000 square feet of greenhouse OR
2 lbs. x 16 ozs. = 32 ozs. ÷ 43.6 = .73 ozs. per 1,000 square feet of greenhouse
If (B)
Multiply the number of ounces by .035. This equals amount needed to treat 1,000 square feet.
For example, if treating 8,000 square feet:
12 ozs per /100 gals x .035 = .42 ozs x 8 = 3.36 ozs. (amount of chemical needed in just
a few gallons of water)
- This is based on average use of 3.5 gallons for every 1,000 square feet using conventional spray nozzles.
Bottom Line and Rule of Thumb
Regardless of the application method, you will need the same amount of chemical.
The difference is:
Conventional spray nozzles require lots of water.
(because the spray is being used to carry the chemical to the product)
CRSMs need only a few gallons of water.
(because 1 hour is generally enough time to fumigate the chemical mixture into the atmosphere)
WEAR GOGGLES & RUBBER GLOVES WHEN
HANDLING CHEMICALS.
CAUTION
