Spraying on time is the safest and most effective way to reduce chemical dose rates. Whether it is about weed, fungus or insect attacks, the point is to hit the infestant at its most vulnerable stage.This timeliness is the key to using the lowest dose rate possible. When, for instance, spraying against weed is carried out, dose rates of crop protection chemicals may usually be reduced considerably, if only spraying is carried out at the seed leaf stage. Thus the optimum spraying time is only available for a very short lapse of time, often only a few days. If large areas have to be sprayed, the possibility of treating the total area in an optimum way is increased considerably with a TWIN sprayer which may spray more acres per hour, and which is furthermore less dependent on wind conditions than a conventional sprayer, offering more possible spraying hours per day.
A high spraying capacity offers not only a lower time consumption but also a reduction of chemical use.
Uniform liquid distribution is an important condition for successful reduction of the chemical dose rate. The TWIN sprayers have been developed through air assistance to lock the spray picture and to maintain a uniform spray pattern, even when the wind is blowing.
Improved deposit: With TWIN air assistance it is possible to increase spray deposits on the most effective target site. This is seen on deposit tests - and indirectly through a better effect with TWIN compared to conventional spray technique.
With the TWIN principle the direction of the droplets may be controlled (angling of nozzles and air), and the foliar parts of plants are moved. In this way the crop will act as a drop filter, the deposit is increased, is more goal directed, and less liquid is lost on the ground.
As an example of better biological effect due to increased deposit, a test from insecticide spraying in cotton is shown. Successful spraying of this crop is extremely demanding for it has a very dense leaf mass. The test has been carried out with two replicates, both of them show a doubling of the effect when adding air and angling forwards compared to conventional spraying.
Less waste: An efficient reduction of the drift is increasingly important when the question is about the airborne drift and potential contamination of neighbouring crops, ditches or streams. To avoid pollution with chemicals, the rules for the use of field sprayers are constantly intensified - in some countries TWIN has already been especially approved to drive closer to sensitive buffer zones. This enormous and responsible benefit to farmers and growers are all derived from the unprecedented drop control of the TWIN FORCE that produces less waste out of the sprayed area.