Technique

Wingssprayer spraying technique with the Single Wing, for speeds up to a maximum of 12 km/hour

By improving the traditional on crucial, patented points, the famous cloth drag technique came about. With this renewed way of spraying, the wind is stopped by means of a wing, the crop is slightly opened and the product is sprayed right in the inside of the opened crop, using finer drops. Because of the wind drifting over the wing, the small drops are pushed into the crops. With these fine drops, the spray coverage will be ten times higher than with the large drops. This increases the effectiveness of the products. Because of this effect, fewer products are necessary, whereby a lot of money is saved. The achieved results are considerably better and the environment is harmed less.

Traditional spraying technique for responsible spraying up to a maximum of 7 km/hour

The traditional way of spraying had and has a lot of disadvantages. Especially the limited driving speed of four to seven km/hour. The crops are often sprayed from a relatively high altitude, whereby the pesticides can be blown away and the drops have no chance of penetrating deep into the crops. To prevent drift emission (drops drifting off), larger drops were used. However, these drops only ended up on the upper leafs. This causes an overdose with the risk of drops rolling off at the leaf ends.

Wingssprayer spraying technique with the Double Wing for speeds up to a maximum of 18 km/hour

The cloth drag technique is further improved and developed into a completely new concept. The wish and necessity to be able to work fast when spraying agricultural crops, demands much more from the spraying technique. With the new Wingssprayer Double Wing, a double wing construction has been brought about. This construction uses the cost-free aerodynamics, the air streams that arise because of the higher driving speed of the spraying machine. The newest spraying system works as a reversed airplane wing and uses the downward power of the air streams, the down force. The wing makes sure the very fine drops containing the pesticide can be lead straight to the crop and end up penetrating right inside the crops. With the Wingssprayer Double Wing it is possible to spray crops at much higher driving speeds. Also, the spray boom is more stabile because of the contact of the wing with the crop; this decreases the differences in dosage that otherwise occur by sweeping or unbalance.

The Wingssprayer with the Double Wing

Small drops: more effective

Spraying with larger drops would have enough effect, because a re-division would occur on the leaf. This re-division on the leaf however is has been established in an incubator, under certain conditioned circumstances. These specific circumstances almost never occur on the field. If those perfect climate conditions do exist in the field, small drops would also provide that same re-division of the pesticide on the leafs. Therefore it is more efficient to always spray with small drops and prevent them from drifting off into the environment. 

Product sticks to the leafs

Drops with a size larger than 350 Mu always run of the crops, even if one sprays only 100 litre per Ha, those drops are too heavy. From tests with fluorescent spraying liquid (250 litres of water) sprayed with fine drops it appears that on dry crops the first canals to the lowest point arise. At 300 litres, there are drops even hanging underneath the leafs, resulting into a bad division of the product on the leaf. Spraying more than 300 litres of fluid works contrarily because of loss of the product. When the larger drops have dried, one sees white stains on the leafs. These stains show that the pesticide is badly spread over the crop. 

Small drops remain on the crops

It is not advisable to spray when dew has arisen early in the morning or in the evening; dew makes the spraying fluid simply roll off. The product ends up on the moist leafs and can stick itself to the leafs less well or doesn't even stick at all. In this situation, easy flowing products or products with a spreader almost always run off the crops. If a crop is wet with dew, or in other words, is filled with water, one only has to walk 5 meters through the crops to get wet trousers. This proofs that microscopic small (dew) drops do remain on the crops. This effect also arises by being able to spray with very small drops using the Zero Emission spraying technique. The Wingssprayer technique is the spraying system that makes it possible to penetrate deep into the crops with small drops. It is the only technique that can control diseases and plagues even at the base of the crops.

Increase in scale and consequences

Extension of an agricultural company means an increase in scale. This increase in scale leads

to larger ground surfaces per cultivation and crops and often less time to spray. Faster driving speeds (up to 20 km p/hour or more) are a common solution. However, this always has consequences for the penetration in the crops as well as for the drift (blowing away) of the pesticide. When increasing the driving speed, the spraying pressure increases as well, but the part of the pesticides that evaporates or drifts off in the process increases to a square. The product is unable to penetrate deep into the crop and only works shallow, on the surface, on top of the crops. The danger in this is that one doesn't discover the diseases until a later time, because they stay present at the base of the crops. Often one has to perform a second spraying to control these left-over pathogenic organisms or plagues. This causes unpleasant surprises later, for example in the storage of products or during the harvest because the crops appeared to be clean and free of diseases from above. With the Wingssprayer crop-opening technique one also reaches all the pathogenic organisms and small weeds, even under dense foliage.

Air in spraying drops causes more drift

Drops mixed with air are relatively light with regard to drops of the same section, without air.  These drops with air have a relatively larger surface and catch more wind (drift). For a good division oblique on the driving direction, these caps have to be held 70 to 80 cm above the crops or the ground, whereby they cause much more drift than is actually allowed. In closed spaces such as greenhouses, one sprays with microscopic small drops for an effective result. This technique with, for example, 100 bar of spraying pressure cannot be used outside in the field. The even smaller drops would then already evaporate or drift off during the spraying. This also shows that the in general very expensive greenhouse cultivations such as flowers or tomatoes also have better experiences with effective small drops. With a fine stream of drops that is lead directly into the crops, one brings about the highest, most effective working action of the pesticides and therefore one can use fewer products.

Blown air

The Wingssprayer Zero Emission spraying technique with the Single Wing and the Double Wing uses the airstreams that arise by driving the spraying machine through the crops. These cost-free aerodynamic air streams are used to lead the fine drops towards the goal. Spraying machines that work with blown air have a very negative drift effect in all situations where there are no crops or where the crops are very small and the bottom of the field isn't completely covered. To open up crops with spraying machines using blown air and spray with less drift one has to have very dense crops and not drive any faster than 4 km per hour. Even if the driving speed becomes higher than 5 km per hour, spraying machines with blown air are unable to open these crops and even push the upper leafs closer together. Using a spray of 30 meters bout width, with blown air at 20 Km per hour to open up the crops would call for a ventilator with a diesel engine of about 400 horse power. Spraying machines with blown air work well for 30% of the sprayings at lower driving speeds, to limit enough emission one has to use larger, less effective drops.

Sunlight

New pesticides more and more work on the bases of photosynthesis (sunlight). For the best working action the product always has to be sprayed during the day. Spraying in the evening or at night therefore isn't an option and during the day, the wind can be too strong for the traditional spraying technique. The Wingssprayer technique makes it possible to spray during the day, even at stronger winds. With the right dosage, the fine drops provide numerous contact points on the leafs. The combination of day- or sunlight and the new Wingssprayer spraying technique makes sure the product works perfectly. The Single Wing can be used responsibly during the day or at night up to 12 km per hour and the Double Wing enables even higher driving speeds for very effective sprayings without burdening the environment.

Systemic products

Pesticides that work by absorption via the green parts of the plant, the so-called systemic products, work faster and more complete when they end up well divided over the crops. At coverage of 30% of the leaf surface with larger drops, fewer products are absorbed and the products are absorbed slower than with coverage of 90% with small drops. One has to take into account that there is as much pesticide and water in one drop of 800 Mu as in eight drops of 400 Mu. Of one 800Mu drop, one can make 64 drops with an average of 200 Mu. 80% of the drops with 800Mu roll off the leafs. Only 40% of the 400Mu drops roll off the leafs and drops of 200 Mu or smaller remain on the leaf as little dew drops, even at the bottom of the leafs.