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Dynamic Accumulators

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Consoude de Russie au jardin. Retour à l'accueil Sommaire de cette page : Un petit coin de jardin réservé à la Consoude de Russie peut être récolté plusieurs fois par an (mensuellement et jusqu'à 6 fois), procurant une quantité abondante et renouvelable de matériaux verts riches en matières minérales utilisables de diverses manières pour accroître la fertilité du sol et la croissance des plantes.

Ses racines profondes puisent profondément dans le sol les précieux éléments nutritifs (dont, entre autres, la potasse) qui sont stockés dans les feuilles. Ces dernières sont utilisées dans les trous de plantation, comme activateur de compost, mulch nourricier, terreau , purin ou engrais liquide extrait à sec (plus riche que ceux à base d'algues marines) utilisables en fertilisation foliaire. Le purin est un engrais liquide fabriqué en faisant mariner 1 kg de feuilles dans 10 litres d'eau pendant 4-6 semaines.

Il est recommandé de planter une dizaine de plants dans un petit jardin familial. Retour à l'index Haut de page ). Les plantes indicatrices du sol - NB Corp. What is Comfrey Herb Good For? History of Use - Herbal Encyclopedia. Bee pollinating a Comfrey leaf flower Botanical Name Family BoraginaceaeSymphytum officinale Common Names Ass Ear, Black Root, Blackwort, Boneset, Bruisewort, Consound, Gum Plant, Healing Herb, Knitback, Knitbone, Salsify, Slippery Root, WallwortSpanish: Sueldo, Consueldo, Cardo Santo Cautions Do not use comfrey on dirty wounds as rapid healing can trap the dirt or pus. The use of comfrey is restricted in Australia, New Zealand, Canada, and Germany because of the toxic alkaloids, mainly pyrrolizidine.

Two species, S. asperum (prickly comfrey) and S. uplandicum (Russian comfrey) contain very high levels of echimidine, one of the more potent alkaloids. Description Indigenous to Europe, comfrey now grows in all temperate regions of the world, including western Asia, North America, and Australia. History Long used to heal wounds, the comfrey leaves and roots have been used to cure ailments ranging from stubborn leg ulcers to broken bones, and hence its common name of “boneset” or “knitbone”. The Wonderful Multi-Purpose Comfrey Plant Permaculture Courses, Information, Forums, News. Comfrey (Symphytum spp.) has been cultivated and valued by many cultures for almost 2500 years. A native to Europe and Asia, the comfrey plant with which most are familiar, Symphytum officinale, has been used as a blood coagulant, a treatment for maladies of the lung, and as a poultice to aid in the healing of wounds and broken bones. Consumed as a tea, comfrey is said to treat a variety of internal ailments by various folk medicine traditions.

The word comfrey is Latin in origin and means "to grow together”. Though research has recently linked the consumption of comfrey with liver damage in mice, thus halting the development of comfrey as a modern food crop, the plant was once widely grown for its medicinal, food and forage value. Today it is still valued for its use in salves and other topical skin preparations and for its use as animal fodder and fertilizer. Comfrey is hardy from zones 4 – 9, and will grow in full or partial sun. You can't have your cover crop and eat it too. You can't have your cover crop and eat it too By Drew LyonExtension dryland cropping systems specialist and Paul Burgener,ag economics research analyst University of Nebraska Panhandle Research and Extension Center Cover crops are getting a good deal of attention in the media and at various educational events this season.

Frequently mentioned benefits include improved soil quality (such as increased soil organic matter, improved water infiltration, and reduced soil erosion), reduced need for external inputs such as nitrogen fertilizer and herbicides, and providing grazing opportunities for livestock. This last benefit does not strictly fit with the definition of cover crops. It may be feasible to manage a forage crop to get some of the benefits of a cover crop--for example, by grazing less intensely or swathing at a greater height above the ground.

The question arises: How do you value a cover crop? Erigeron canadensis. Dynamic accumulator. Dynamic accumulators are plants that gather certain micronutrients, macronutrients, or minerals from the soil through their roots, as opposed to from the air, and store them in their leaves. These plants can be used either for detoxifying soil or for gathering a certain nutrient or mineral from an area. For instance, clovers will mine great quantities of nitrogen out of the air via a symbiotic relationship with bacteria. These bacteria convert gaseous nitrogen into a form available to the clover, and exchange this nitrogen for exudates/sugars given by the clover. When the clover dies or is cut down, the green matter breaks down and releases the nitrogen into the soil. These plants become rich in a certain substance and can then be cut down. This can be used as a fertilizer or as part of a fertilizer mix for other plants that may be deficient in those particular nutrients.

The plants with function as dynamic accumulators are often traditionally regarded as companion plants.