9
Fig. 3 – Coverage of Sprayer
3.Calculate the area treated by the sprayer per minute. Fig. 3 shows the sprayer being operated over a field crop.
If the operator is walking at S Km/Hr this corresponds to 1000 x S metres/hour:
Distance travelled | = | 1000 x S | metres/minute |
|
| 60 |
|
If the width of the swath is W metres, then the area treated per minute is:
Area treated | = | 1000 x S x W |
| sq metres/minute | |
|
| 60 |
|
|
|
This is converted to hectares by dividing by 10,000: |
| ||||
Area treated | = | 1000 x S x W | = | S x W | ha/minute |
|
| 60 x 10,000 |
| 600 |
|
This gives the standard formula for calculating the coverage of a sprayer:
Area/min | = | Swath Width (m) x Speed (Km/Hr) | ha/min |
|
| 600 |
|
