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Witterra is a joint venture between Witte Lastrup GmbH and rovi energie AG. Our common goal is to establish the humus plant as a holistic solution for the refinement of liquid residues from agriculture and industry.


By producing high-quality humus fertilizer, we want to help close nutrient cycles and sustainably promote the build-up of humus in soils as the largest CO2 reservoir.


As WITTERRA, we combine our many years of experience in plant construction for the agricultural and waste disposal sectors. Our principle is to satisfy our customers with the best quality. Therefore, we pay special attention to durable machine technology and reliable customer service.

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