TREATED HECTARES VS FIELD HECTARES -
Determining the nozzle-tip flow rate.
From the previous post about treated
hectares we determined the amount of spray-mix per square metre and
we established the speed at which the operation was being undertaken.
To reiterate: For every
field hectare the actual usage - haf
= 12ml x 1500 m2
= 18'000 ml or 18 litres.
SPEED.
The operator walking at 3 km/hr or 50 m/minute (m/min =3000m/60min
= 50m/min) covers 10 m2
/ minute.
The usage of
spray-mix is therefore 12ml x 10m2
= 120ml/minute.
To obtain
thorough coverage of the Tobacco seedling crown you need a
nozzle-tip delivering 0.12 litres per minute producing a solid cone
pattern. Does it exist? Take a
look in TeeJet catalogue 51-M and see if you can find a nozzle - tip
matching the specification.
What about
pressure? Can you find a knapsack that maintains constant pressure?
Is it possible
to find a reliable pressure regulating valve that can be fitted
in-line to ensure a constant pressure at the nozzle?
Is it
practicable to treat each individual tobacco seedling?
This picture I took many years ago in Malawi. Immaculately maintained. Want to know why?
Contact
CHEMICON if you need help.
chemicon@multispray.com
Tel
Intl: +27 83 289 0327
Tel
Natl: 083 289 0327
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