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The term “lichen” is used to describe the symbiosis between a fungus and an alga. The fine fungal threads weave around the algae or penetrate them. This enables the exchange of substances between the two life partners. The alga uses sunlight and chlorophyll to produce starch, which is the basis of life for the fungus. […]
This distinction is a subdivision according to the nutrient requirements of plants. This distinction is important when creating crop rotation beds. Heavy feeders (e.g., brassicas) need an extraordinary amount of nutrients for good growth. Therefore, they are the first to be grown in a crop rotation. Average feeders (e.g., carrots) require significantly fewer nutrients. Weak
Organisms that live on animal excrement, dead plants and dead animals (carrion). They break up and transport organic material in the soil. This is then broken down by secondary decomposers into inorganic substances. Important primary decomposers are earthworms, enchytraea, soil mites, fly larvae, isopods and snails.
Boards planed on the front, levelled on the back and edged on the sides, which have tongue and groove joints.
Soil degradation describes the destruction or permanent change of the natural characteristics of a soil. This can be caused, among other things, by anthropogenic influences or climate changes.
The troposphere is the layer of the earth’s atmosphere closest to the ground. Most of the weather occurs in this layer.
Carbon monoxide is a chemical compound made up of carbon and oxygen. The molecular formula is CO. Carbon monoxide is odourless and colourless and very toxic. It is formed during the incomplete combustion of carbon-containing substances.
A microclimate denotes local atmospheric conditions that differ from those in the surrounding areas. Often it differs only slightly, but sometimes there is a significant difference. The term can refer to areas as small as a few square meters (e.g., a garden bed or a den) or many square kilometres.
The goal of green manure is to improve the soil. Certain plants are left in the field or planted for this purpose and then incorporated into the surface of the soil or used for mulching. This improves soil life, builds up humus, protects the soil from erosion, improves the supply of nitrogen to the following
This term describes chemical agents for the destruction of plant and animal pests of all kinds.
A plant species is referred to as a “pioneer plant” in that it can adapt well to the colonisation of new areas that are still bare of vegetation.
Humic acids are mainly found in nutrient-rich, slightly acidic to neutral soils. They belong to the humic substances. Humic substances are formed from fragments and residues that are difficult to convert, such as spruce needles. They form organic-mineral complexes that contribute to structural stability and are very rich in nutrients. However, the nutrients are only
“Land grabbing” is a term for the (often illegal) appropriation of land, mostly by governments or corporations.