Over the years, Vicar has perfected the radial blower!
With five basic models and 15 different turbine layouts, these blowers are able meet a wide variety of crop requirements ranging from narrow, 1 m beds in vegetable production all the way to tree-lined roads with trees up to 45 m in height and width.
Over the years, Vicar has perfected the radial blower to make it suitable for many different applications, from vineyards, orchards and hop cultivation to nurseries and specialty crops. With five basic models and 15 different turbine layouts, these blowers are able meet a wide variety of crop requirements ranging from narrow, 1 m beds in vegetable production all the way to tree-lined roads with trees up to 45 m in height and width. Especially when pest pressures and infection rates are high, it is crucial that the applied pesticide penetrates the entire leaf structure, which in turn requires an even coating not only to the top but also to the underside of each leaf as well as the entire fruit. Compared to other blower types, that is exactly what Vicar radial blowers excel at by using higher air speeds at lower air volumes. The advantage of the lower air flow is that the air is easier to direct and airflow can thus be tailored to your crops‘ individual needs. That results in a more precise application while saving resources at the same time. It‘s important to understand that the airflow itself carries the liquids, while the spray nozzle and pressure only regulate the amount of pesticide as well as the spray characteristics (large/fine). The high-quality materials used to manufacture our equipment ensure a long life: the turbines‘ heart is made from stainless steel, the casing from cast aluminum.
This is how the patented system works
Each of the turbine‘s air outlets receives air from a certain section – a partial spiral – of the turbine wheel. If the outlets are closed-off on one side via the hydraulically adjustable air-flow valves, for example in a water protection area or at the edge of a forest, the air intake is automatically adjusted to the required volume, in this case by half. This guarantees both consistent air flow and air symmetry at all outlets. To avoid frictional losses between the turbine wheel and the air outlets, the curved ducts are equipped with special directional fins that stabilize the air flow. To achieve either a more targeted application – for example when spraying young shoots, for Botrytis treatment, in nursery operations, for soil treatment in vineyards, etc – or a longer range, the individual air flows can be bundled. In optimum wind conditions, this allows for a targeted, horizontal application in the growth zone all the way to the third row, without any significant drift. In unilateral orchard applications, the same model is thus able to achieve twice the range. With only one blower, you can therefore cultivate crops not only in vineyards, but also in orchards and for vegetable production – and that saves you costs by not having to acquire multiple pesticide applicators.
Hands-on example: achieving greater penetration with higher air speeds
When working down only every other row in a vineyard, Vicar‘s radial blowers with their higher air speeds have a great advantage: not only do they achieve much greater penetration of the plants, especially in the first row, but also better adsorption of the pesticide in the second row. This is the requirement for a thorough coating of all plant material, both the leaves’ upper and under sides as well as the entire grapevine structure. Depending on the width of application and the resulting speed losses over distance, the average coating rate is about 40% for the first and up to 60% for the second row. Thus, if you work down only every other row, the reverse effect allows you to achieve a nearly 100% application rate on each side of each grapevine. Not only does this save the expense of acquiring multi-row pesticide applicators, but it also saves time and fuel yielding lower labor and operating costs.