Liquid manure technology - from the rotary lobe pump to the Strip Till device

Efficient liquid manure spreading and liquid manure management

Liquid manure is an important resource for agriculture. Used correctly, it brings with it distinct economic benefits. Though improved liquid manure technology comes at a price, it enables huge savings. Why? The more uniformly liquid manure is deposited on or in the ground, the better the nutrients it contains can be utilized since emissions are minimized. Farmers, corporate contractors and machine syndicates can significantly reduce outlay on mineral fertilizer using this natural source of nutrients. Using the full range of agricultural technology by Vogelsang will ensure low-emission application of liquid manure is more successful even under the most demanding conditions.

For several decades now, Vogelsang GmbH & Co. KG has been committed to the topic of liquid manure technology. Time and time again we have set new benchmarks for low-emission spreading, thereby enabling our customers to use the nutrients contained in the liquid manure efficiently and hence optimize their operating costs. Consequently, we have contributed considerably to their economic success. Incorporating ongoing further developments and innovations in our techniques means we are in a position to act as your professional partner – from tanking to spreading. For we know only too well that efficient liquid manure management with ground level spreading saves costs while at the same time preserving the environment. In order to support our customers in achieving their economic goals as best as possible, we offer a broad portfolio of products in the areas of pump, shredding and spreading technology.

Focus Box

Pumps for Life - Quality pays off

Vogelsang's promise for economicals and optimal liquid manure management

Would you like to find out more about our rotary lobe pumps? We shall demonstrate why our VX series pumps have minimal operating costs throughout their life cycle and are the most economical option for your manure management.

On to Pumps for Life

Applications in modern agriculture

For more efficient spreading of liquid manure, it generally first needs to be pumped from a deep sump into a tanker or into another container on the yard. Farmers and corporate contractors require efficient pumping technology for this that is geared precisely to their requirements. At the same time questions like "How do I best pump liquid manure?", "How can I pump large quantities in a short time?" or "Which pump is suitable for mobile use?“ play an important role here.

Rotary lobe pumps - the basis of spreading technology

Rotary lobe pumps have become an essential liquid manure technology due to their fundamental characteristics and are the basis of spreading technology. As the inventor of this technology, Vogelsang is further optimizing its various pump series on an ongoing basis to ensure our products meet the daily requirements of our customers.

Vogelsang pumps are self-priming up to a depth of nine meters so that liquid manure can also be pumped out of deep sumps to a container or tanker. Together with their high performance, they make the tanker filling process simple and fast.

The pump process can on the one hand, be performed using a stationary solution with a liquid manure pump installed on a fixed-position or three-point stand or else at the tank. The different drive options (mechanical, electrical, hydraulic) which each farmer can select as they choose are also a relevant aspect here.

Use of the liquid manure pump at the tanker

Rotary lobe pumps for tankers being self-priming and high-performance does not suffice alone however. Compact, having no dependency on direction of rotation and insensitivity to foreign matter are further key features that make rotary lobe pumps the optimal solution. The compactness and low dead weight of the Vogelsang liquid manure pump enables a greater useful load at the tanker while at the same time, the tank is filled more quickly and fully. In this way storage capacities are utilized optimally and transport is as efficient as possible. Vacuum systems arrive at their physical limitations very quickly e.g. due to formation of foam in the tanker. In addition, rotary lobe pumps can fill tanks up to 30 percent more quickly.

And the filling technique at the tanker can also be used for draining too. The rotary lobe pump spreads the liquid manure constantly and evenly, regardless of the liquid or pressure level in the tank. This is a basic prerequisite in order use liquid manure as a natural and organic fertilizer. Simple and fast servicing of the pump is also important to ensure downtimes are kept as short and rare as possible. Our QuickService concept means Vogelsang liquid manure pumps can be repaired without dismounting and have a high maintainability.

Support of the vacuum tank with filling aids

A further variant for tank filling is the vacuum system. When filling with a vacuum pump, the basic problem is foam formation while at the same time this filling process also requires more time than other techniques. Yet an auxiliary filling aid will enable you to lessen both disadvantages of this technique however. The Vogelsang PowerFill enables this power at a significantly lower speed due to its generously sized housing, ensuring less formation of foam overall with significantly faster filling. The PowerFill can be inserted both on the suction but also on the discharge side and can be retrofitted easily using a flange connection.

Stationary and mobile filling stations

Use of tank filling stations is one option for stationary tanking for example with tanks or terminal storage on a biogas plant. These remove the need for inconvenient, time-consuming coupling and decoupling of hoses since they are equipped with a T-System column including filling nozzle enabling the tank to be filled quickly via the dome. At the same there are also mobile filling stations for comfortable and rapid filling on the edge of a lagoon for example. Vogelsang offers two different options for filling tanks quickly and conveniently with the FillMaster S for stationary tanking and the FillMaster M for mobile tanking.

Shredding technology is often required to protect pumps from foreign matter and heavy material. This can also be carried out either as a stationary technique or at the tanker. The primary goal here is to prevent clogging, blockages and damage due to fibrous matter or foreign matter contained in the liquid, which can often be found in liquid manure. This might be stones, hoof blocks or earmarks for example.

Use of shredding technology has another key advantage however. The more flowable and homogeneous the liquid manure is, the more effectively it can be used as organic fertilizer. Particularly on tankers, the use of such technology ensures homogeneous but also easily doseable liquid manure suspension.

As a partner for agriculture, Vogelsang also offers tailor-made solutions in this area for relevant customer problems. In this way the RotaCut macerator can be installed as a stationary technology on the yard or in the form of the RotaCut MXL as a mobile solution at the tankers. Fibers are likewise cut and foreign matter separated reliably. Users can rest assured that their pump and downstream systems will be reliably protected. Integration of a macerator therefore has a positive effect on time management and reduces operating costs due to less servicing of the liquid manure pump and the spreading technology. The generously-sized opening is also very maintainable.

The key factor of efficient liquid manure management is precise spreading of this medium to ensure optimal utilization of the natural nutrients. But how can I spread liquid manure while keeping emissions low? What do I need to observe with this in order to be able to use liquid manure optimally as organic fertilizer?

The basis here are a homogeneous suspension and a filling system for the tanker that also ensures constant spreading. At the same time the spreading technique itself must be precise, exact and above all clean. This is the only way to be sure nutrients are spread uniformly.

Wide spreading – the spreading technique of the past

It is well documented that the wide spreading method results in very little spreading accuracy. For this reason, it is widely known as "the spreading system of the past". It is wind-sensitive and above all disperses the nutrients onto the leaves of crops and not on the soil where the nutrients are required. Another key factor was its poor average distribution. With the amendment to the Fertilization Ordinance this procedure will no longer be permitted from 2020 or 2025 onwards. From this point on, spreading will only be permitted in strips.

Precise liquid manure spreading with ExaCuts

The hydraulically powered precision distributor is at the center of strip-based spreading technology, a basic prerequisite of which is the precise and reliable spreading to each individual flow. At the same time fibrous matter and foreign objects are reliably cut by the cutting blades. Vogelsang can offer three different variants here: the DosiMat LVX, the ExaCut ECL or the ExaCut ETX. We can therefore offer you the optimal solution for all requirements and spreading application areas. Examples of application areas are dribble bar linkage, trailing skid linkage, cultivators, disc harrows and slit devices. To summarize briefly, the Vogelsang ExaCut is ideal for all spreading techniques.

Low-emission spreading with the dribble bar system

The dribble bar system ensures low-level, virtually odorless spreading. This technique is the future of spreading and will remain so too because it

  • guarantees low levels of nutrient losses without contaminating crops
  • is insensitive to wind and
  • environmentally friendly.

Vogelsang builds dribble bar systems for all drawn and self-propelled vehicles regardless of manufacturer, capacity, type of tires, materials and pump systems up to a working width of 36 meters.

The trailing shoe system for nutrient efficient liquid manure spreading

As a further liquid manure technique variant, the trailing shoe system is an optimal solution for pasture land for example. The crops are parted using a skid so that the liquid manure can be spread directly beneath them. The result is even more efficient spreading in existing grass and crops, thus ensuring compliance with requirements of many subsidy programs at the same time. With the SwingUp Slide and SwingMax Slide Vogelsang offers two trailing shoe systems with working widths of up to 30 meters. This achieves a level of effectiveness never before seen in trailing shoe technology.

Whole area or strip-based - liquid manure is introduced directly into the soil

To be able to utilize nutrients in the liquid manure optimally, it is important to keep emissions as low as possible. If the liquid manure is introduced directly, these nutrient losses, which occur due to evaporation for example, are prevented. This is the best solution for arable land for optimal use of nutrients. At the same time it also saves you time and money, and reduces the number of passes across the field. The method enables compliance with the four-hour rule for introduction. Direct introduction of the liquid manure is enabled on the one hand with our equipment set for cultivators and short harrows, the SynCult. For area-based introduction, the SynCult offers a professional solution for simple and quick equipping of a tillage device. Alongside our previous partners Amazone, Väderstad, Köckerling, Horsch, Pöttinger and Farmet we can also offer individual kits for upgrading of devices by other manufacturers too.

The Strip Tillage method however also offers a further option for direct introduction of liquid manure with its optional liquid manure underfoot fertilization. For decades, this method has proven highly successful in dry regions or areas that suffer from drought or erosion problems as it combines the benefits of no-till and conventional soil cultivation systems. The soil is worked in strips while at the same time the liquid manure is deposited under foot enabling several processes to be completed efficiently in one single work step. This means, using this method, nutrients are placed exactly where plants need them: around the roots Two different series are available with the Vogelsang XTill: the robust XTill ProTerra has a fixed row width of 70 or 75 cm while the XTill VarioCrop can be used with any crops since row spacing can be freely adjusted from 45 to 75 cm.


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