Read the detailed step-by-step instructions at the bottom of the page to help you use the three calculators:

Each calculator is designed to work independently, so you can use any of them based on your specific needs.

1. Tree Row Volume & Water Calculator

This calculator helps estimate the Tree Row Volume (TRV) and the water volume required based on tree dimensions, spacing, shape, and density.

Steps:

• Enter Tree Height (in meters):
  • Input the height of a single tree. Make sure the value is in meters.
• Enter Tree Width (in meters):
  • Input the width of a single tree, again in meters.
• Enter Tree Spacing (in meters):
  • This is the distance between trees in the same row, in meters.
• Enter Row Spacing (in meters):
  • This is the distance between rows of trees, in meters.
• Select Tree Shape:
  • Choose the shape that best represents your trees.
  • Options include:
    • Block: For block-shaped trees. (This is the default tree height x tree width x tree spacing x number of trees per hectare. 
    • Cylinder/Dome: For trees shaped like a cylinder with a dome on top.
    • Dome: For dome-shaped trees.
    • Sphere: For spherical trees.
    • Cone: For cone-shaped trees.
• Select Tree Density:
  • Choose the density of the trees, which affects how much of the row is covered by the tree canopy:
    • Very Dense (1.0): For fully covered rows.
    • Dense (0.8): For denser tree rows.
    • Moderate (0.6): For moderately dense rows.
    • Sparse (0.4): For sparsely populated rows.
• Click “Calculate” to see the results:
  • Tree Row Volume (TRV): The calculated volume in cubic meters (m³).
  • Water Volume Required: The amount of water needed per hectare, in litres.
  • Click Calculate to see the TRV and Water Volume Required.

2. Water Volume Calculator for Airblast Sprayers

This calculator estimates the water discharge per hectare for airblast sprayers based on nozzle configurations, speed, and row spacing.

Steps:

• Build the Nozzle Discharge Table (Step 1):
  • Enter Nozzle ID: Provide a unique identifier for the nozzle type.
  • Enter Pressure (in bars): Input the spray pressure in bars.
  • Enter Discharge Rate (L/min): Input the discharge rate at this pressure, in liters per minute. (Determine the discharge rate for pressures 6-15 bars by placing a hose over a nozzle and collecting the water that discharges in one minute).
  • Click Add Nozzle to save this data. Repeat to add multiple nozzles, which will be listed in the table below.
• Calculate Water Discharge per Hectare (Step 2):
  • Enter Speed (seconds per 100 m): Enter the time in seconds it takes for the sprayer to cover 100 meters.
  • Enter Row Spacing (meters): Input the distance between rows in meters.
  • Enter Number of Nozzles per Side: Specify how many nozzles are on each side of the sprayer.
  • Select Number of Sides: Choose whether you’re spraying one side or both sides of the row.
  • Enter Nozzle ID (for calculation): Enter the ID of the nozzle you previously saved in Step 1.
  • Enter Pressure (bars) (for calculation): Input the pressure in bars at which you’ll use the selected nozzle.
  • Click Calculate Volume to display the water discharge per hectare (L/ha).
  • Change the pressure, nozzle ID, or speed to adjust the water discharge per hectare up or down to match the Water Volume Required.

3. Spray Mixture Calculator

This calculator helps determine how much product to add to a spray tank based on tank capacity, product rate, and spray volume required.

Steps:

• Enter Tank Capacity (litres):
  • Input the total volume of the spray tank in litres.
• Enter Product Name: (Optional)
  • Type the name of the product you’re using. This field is mainly for labelling purposes.
• Enter Product Rate (litres per hectare):
  • Specify how many litres of the product are recommended per hectare.
• Enter Spray Volume (litres per hectare):
  • Input the total spray volume required in litres per hectare that you intend to apply. This is determined in the previous step.
• Click “Calculate” to see the results:
  • The calculator will display the amount of product (in litres) you need to add to the tank based on the entered values.

By following these instructions, you’ll be able to effectively use each calculator to obtain accurate values for tree volume, water requirements, and spray mixture ratios tailored to your specific agricultural needs.