Agriculture sciences

Whether in food processing or agriculture, residues such as cereal straw, leaves or vegetable stalks usually end up as animal feed in troughs or fields. In Baden-Württemberg alone, this amounts to around 7.7 million tonnes per year. For the bioeconomy, these previously underutilised agricultural side streams can be a source of raw materials for new bio-based products and pave the way for a resource-efficient circular economy.

Soil is a vital resource, but is increasingly under threat. According to the European Soil Observatory (EUSO), around 76% of soils in Germany alone are degraded. Soil degradation has many causes: Erosion, intensive agriculture, monocultures, chemical fertilizers, pesticides and urbanization have all contributed to upsetting the balance in the soil - with serious consequences for agriculture, climate and nature.

Producing food on agricultural land and generating electricity at the same time - this concept is not new. So-called agri-photovoltaic systems (agri-PV systems) are already being tested at various locations across Germany. One advantage is that the dual use of agricultural land creates new sources of income for farmers. The MoorPower project is now investigating whether such a concept can also make the rewetting of degraded moorland more attractive for farms.

Catch crops such as field mustard or legumes are small all-rounders for agriculture: they serve as animal feed or remain on the field as green manure to prepare or improve the soil for the next main crop. In this way, plants are supplied with nutrients, humus formation is promoted, the water, nutrient and carbon balance in the soil is stabilized and erosion is prevented. However, their potential as pollutant removers has so far been underestimated. 

Extreme weather conditions such as heat, drought and heavy rain are putting increasing pressure on winegrowing. Soil erosion is a major problem for winegrowers. Vineyards on slopes such as the Moselle, Rhine or Elbe are particularly affected by this. Soil is eroded or washed away by wind and rain, leaving the vines without a basis for growth.

Traditionally, the Federal Ministry of Food and Agriculture (BMEL) organises the World Food Conference in Berlin at the start of the Green Week to kick off the year. This year, around 2,000 representatives from politics, business, science and civil society will once again discuss global agricultural and food policy issues in the CityCube from 15 to 18 January. The 17th edition of the Global Forum for Food and Agriculture (GFFA) will focus on the topic of ‘Shaping a sustainable bioeconomy’.

Potting soils usually contain peat, which is formed from dead plant remains in bogs. However, peat extraction destroys the habitats of many plants and animals as well as a valuable carbon store. There are now alternative plant substrates such as coconut pulp and fibres. However, the raw materials have to be imported from India or Sri Lanka. In the TOPKO project, researchers at Oldenburg University of Applied Sciences and industrial partners now want to prove that regional raw materials are also suitable as a peat substitute for plant substrates.

Land, moor and sea are the three areas of expertise that Mecklenburg-Vorpommern (MV) can rely on for bio-based structural change. The focus is on the high-quality refinement of plant-based raw materials such as arable crops, reeds and algae. By 2030, these renewable raw materials are to be turned into products that will help the region to achieve an economic upturn and make it a model region for the bioeconomy. Peatlands play an important role in structural change. They currently make up around 13% of the total area of the federal state.