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CROP PROTECTION - The Science of Air Assisted Spraying

Objective

Really successful spray applications depend on the operator being in control of the spray mixes getting to the target, using a generated air column to carry the spray mist.  This can only be achieved by using sprayers of superior basic design, which have been developed over time, to meet a wide range of plant types and structures.  In the process providing cutting edge coverage of any type of water borne chemicals for the control of plant pests and essential growth elements (as listed in the 39^th edition of the Dept. of Agricultural guide, last published in 2002).

One of the leading range of machines covering all aspects of spraying different (vegetables, fruits, vines, olives, nuts, hops, flowers, citrus, bananas, avocados etc.) is the VICAR TURBINE RANGE, created originally in Bolognia, Italy in the early 1980s by Turbine Engineer Vincencio Carero, using a unique mix of high speed air at low volumes of air.

This combination differs radically from the conventional Air characterises produced by multi bladed Axcal Flow Fans.  The stainless steel turbine, which is driven by a two speed gearbox come in different sizes with corresponding sized outlets to match the production of the consistent and equal volumes of air and velocity to any outlets all the time.  The smallest diameter of turbine is 40 cm and produces 6-8000 m3/hr at 2-3000 rpm at 70 – 80 m/sec at 540 pto speed, in a range of 5 basic models, mounted on 3 point or trailed combinations.  By comparison the most powerful model available uses a double sided 50 cm turbine, which produces 16-18500 m3/hr at 2-2750 rpm and 70 – 80 m/sec at 540.

The practical reasons for VICARs superior penetration and coverage on both sides of leaves, branches and fruits, is due to the “SHEARING” action of the wind as it parts the foliage and penetrates right through the whole canopy, from one side passing.  It then repeats from the other side and with the benefit of a reverse angle of entry.

The other, also unique action, which only VICAR can promise, is the same volume and velocity enters the whole vine, tree or plant from bottom to the very top and inside with the same force of “SHEARING” action.  (Each spray head gets the same).  Ultimately the operator, from his driving position, can instantly adjust the upper spray heads hydraulically, to ensure the spray stays in the canopy, on ridges, slopes and uneven rows etc.

In summary it must also be known that the spray booms are attached to each spray head separately and then ensure the spray mist if following the air all the time.  The number and quality of spray droplets or high volume wetting is perfectly done using Ceramic Albury Nozzles carefully calibrated.

 See for yourself at a demo, book one by contacting Mike Heath at 082 378 2411.