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Breeding without soil

28.08.2015

Gericke originally defined hydroponics as crop growth in mineral nutrient solutions without a solid medium for the roots. He disagreed in written form with other people who used the word “hydroponics” for other breeding techniques without soil like sand culture or gravel culture. The boundaries between hydroponics and a plant culture without soil often had been blurred. Plant culture without soil is a broadly defined term as hydroponics, and the term only implies that no type of soil with clay is used.

Hydrokultur in Mineralnährstofflösungen

It must be kept in mind that sand, indeed, is a type of soil. Nevertheless, the sand culture is seen as plant culture without soil. Hydroponics is a subgroup of the plant culture without soil. Most types of plant culture without soil don’t use the mineral nutrient solutions that are required for hydroponics.

Billions of container plants are produced every year, including fruit trees, shade-giving trees, bushes seedlings for woods, vegetable seedlings, beet plants, perennial plants, and vine stocks. Most container plants are produced according to plant culture that forgoes without the medium soil. Most plants though aren’t raised according to the method of hydroponics because the soil-free medium often provides some of the mineral nutrients through fertilizer cation exchange and decomposition of the organic medium.

Most soil-free mediums for container plants also contain organic materials like peat or composted bark which supplies the plant with nitrogen. The greenhouse-breeding of plants in peat-bags is also known as hydroponics; in a strict sense though this is not the case, because the medium supplies some of the mineral nutrients.

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