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Flowrate conversion charts are available in the Nufarm
SprayWise Horticultural application handbook and the
Croplands Optima spray range buyers guide.
Example 1
(as per Tier 1 example)
Using the chart above, 300 Lt / ha x 3m rows correlates to
9 litres per 100 metres of row.
STEP 10 - COVERAGE ASSESSMENT
Operate your sprayer in the required orchard or vineyard
to check the actual spray coverage achieved on foliage.
This is important because it is the only real measure you
have of actual coverage and effective penetration of
your sprayer.
Coverage checks can be done using:
• Water Sensitive Papers (as pictured) and available
through Croplands dealers – see Croplands Optima
Buyers guide for further details.
• Clay Markers as available through Croplands
dealers – see Croplands Optima Buyers guide for
further details.
• Fluorescent Dye system as available through
Croplands dealers – see Croplands Optima Buyers
guide for further details.
It is recommended to test the unit using water only as a test
run, and again when applying your chemical mixture.
Ensure water sensitive papers are strategically placed on
both upper and lower surfaces.
Spraying testing, evaluation and adjustment to the
sprayer (say fan positions) or spray settings (say nozzles,
pressures and rates) should be done in conjunction with
an agronomist / spray manager / someone skilled in the
art of spraying. The best setup might vary significantly from
crop to crop, season to season etc.
STEP 11 - ADD THE CORRECT AMOUNT OF
CHEMICAL TO THE TANK
For land area rates (Litres or kg per hectare)
Use the following formula:
Chemical required
(Litres) =
Tank volume (Litres) x
recommended chemical rate (L/ha)
÷ spray application rate (L/ha)
For example;
2000 (litre tank) x 2.0 (chemical rate L/ha)
÷ 50 (spray application rate L/ha)
= 80 litres of chemical
If the chemical recommendation is given in
water volume rates
Use the following formula:
Chemical required
(Litres) =
Tank volume (Litres) x
recommended chemical rate (L/100 litres)
÷ 100
For example;
2000 (litre tank) x 4 (chemical rate L/100 litres)
÷ 100 = 80 litres of chemical
For tank volume required,
Use the following formula:
Tank volume required
(Litres) =
Area (ha) x spray application rate (L/ha)
SECTION 7
SPRAYING INFORMATION
