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Codacide Oil Reduces Drift:
Water has a tendency to produce a wide range of droplet sizes.
Small droplets are prone to drift,
and large droplets are prone to bounce and target run-off.
Codacide provides the ability to attain
more uniform optimum droplet sizes, that reduces the number of driftable fines (small droplets
under 100 um) and the number of run-off prone large droplets (over 200 um).
By improving the
quality of the spray produced by agricultural nozzles, Codacide has important consequences for
optimising pesticide inputs and minimising off-target contamination (Butler Ellis and Tuck, 1999).
From standard flat fan (Butler Ellis
et al,
1997; Miller, 2006), pre-orifice, hollow cone (Butler Ellis and
Tuck 1999) to low pressure, air assisted, mist blowers (Bateman
et al
, 2005; Bateman and Alves,
2000), even spray (Hollaway
et al
2000) to Ultra Low Volume (ULV) and Controlled Droplet
Application (CDA) (Alves
et al
, 2000; Leemon and Jonsson, 2008; Bateman
et al
2000; Dobson, 1986),
Codacide improves droplet uniformity, Volume Median Diameter (VMD) and reduces driftable fines
and the creation of large run off prone droplets.
Fig. 1:
Spray Sheet Length with Standard Flat Fan Nozzle.
Butler Ellis and Tuck (1999) investigated the influence of seven spray liquids (water alone and water
plus one of six adjuvants) on five different hydraulic nozzles (standard flat fan, pre-orifice, hollow
cone, low pressure and evenspray nozzles).
Codacide significantly reduced the liquid sheet length as
compared to water alone and water plus the other six adjuvants (
fig 1,2 & 3
Fig 2:
Spray Sheet Length with Hollow Cone Nozzle.
Standard flat fan nozzle spraying 0.5%
Ethokem at 1.0 bar
Standard flat fan nozzle spraying Water
at 1.0 bar
Standard flat fan nozzle spraying 1.0%
Codacide at 1.0 bar
Hollow cone nozzle spraying 0.5%
at 1.5 bar
Hollow cone nozzle spraying water at
1.5 bar
Hollow cone nozzle spraying 1%
Codacide at 1.5 bar