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• Windy conditions

Do you know that....

- with HARDI TWIN you can spray under sub-optimal wind conditions and still get an optimal result?

In most cases wind and rain are the limiting factors for spraying. Rain is difficult to handle - but with the HARDI TWIN sprayer you can spray under windy conditions - and by that increase the number of hours available for optimal plant protection.

The normal guide-line for conventional sprayers is that you have to stop spraying if the wind speed is higher than 4 m/s. This makes perfect sense if you look in the graph below. At 1.5 and 3 m/s the amount of drift is relatively constant, but when the wind gets higher than the 4 m/s the drift curve rapidly increases.

Taylor et al. 1989 Air borne drift - TWIN and conventional Water volume:   100 l/ha Driving speed:    7.7 km/h Spray pressure:     2 bar Nozzle:               ISO F-110 - 02

With the HARDI TWIN sprayer this development in the drift curve seems to be delayed - and at 8 m/s there is not more drift than with 1.5 and 3 m/s for the conventional. It is therefore possible to spray at much higher wind speeds and still get the same good result.