Mixed mainly through the activities of earthworms. If you would like to participate, you can choose to edit this article, or visit the project page for more information. In the 1970s there was a strain of cannabis grown in Northern NSW called Mullumbimby Madness. Humus, nonliving, finely divided organic matter in soil, derived from microbial decomposition of plant and animal substances. a mountainous island off the west coast of Scotland, in the Inner Hebrides, separated from the mainland by the Sound of Mull. - La présence d`une importante pédofaune riche en particulier en vers de terre et en macroarthropodes (diplopodes, cloportes) assure une incorporation rapide de la litière. verb without object mull to study or ruminate; ponder. oxforddictionaries .com /definition /english /mull--2. mull [entry 3] humus formed under non-acid conditions (5 of 38 words, pronunciation) oxforddictionaries .com /definition /english /mull--3. mull [entry 4] About 351 sq. ... (Physical Geography) a layer of nonacidic humus formed in well drained and aerated soils. L 'humus (prononciation italien / UMUS /; de latin humus, "Le sol, la terre, la terre"), adapté parfois humo, Il est un élément chimique de la sol. (1) Mor humus: This is non-porous and friable humus. definition - Humus. A large group of natural organic compounds, found in the soil, formed from the chemical and biological decomposition of plant and animal residues and from the synthetic activity of … Definitions of Humus, synonyms, antonyms, derivatives of Humus, analogical dictionary of Humus (Swedish) Advertizing ... Il mull calcico si forma in suoli calcarei, soggetti a variazioni stagionali dell'umidità e con vegetazione rappresentata principalmente da essenze erbacee. humus the organic material that is derived from the breakdown of plant and animal material occurring in the surface layers of the soil. Mull kommt aus mittelniederdeutsch mul, „lockerer Humusboden“ (vgl. (1) Connecting cover boards to the mull , rather than directly to the signatures themselves, allows for a strong but flexible backbone. Pop: 2667 (2001). Humus is classified into mor, mull, or moder formations according to the degree of its incorporation into the mineral soil, the types of organisms involved in its decomposition, and the vegetation from which it is derived. Australian slang for cannabis. Accumulation à la surface du sol minéral de matériaux organiques légèrement décomposés et à réaction acide (d'apr. A moder-humus formation is intermediate between mor and mull extremes. Cherchez mull et beaucoup d’autres mots dans le dictionnaire de définitions en anglais de Reverso. Omissions? Matière colloïdale du sol issue de la décomposition et de la transformation chimique et biologique des débris végétaux. 2016, S. 65). This solid, dark-coloured component of soil plays a significant role in the control of soil acidity, in the cycling of nutrients, and in the detoxification of hazardous compounds. humus the organic material that is derived from the breakdown of plant and animal material occurring in the surface layers of the soil. By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. Mor soils are usually acidic (low pH) and are characteristic of coniferous forest areas, especially in cold regions and at high altitudes. A moder formation contains more organic material than a mull formation, but this material is not as well mixed with mineral components. (Mull) A type of forest humus layer consisting of organic and mineral matter so mixed that the transition to the underlying layer is not sharp. Humus – Definition. 11. the decomposed organic element of the soil. As humus decomposes, its components are changed into forms usable by plants. Updates? 1; noun mull an island in the Hebrides, in W Scotland. Define mull. 2 : a finely powdered solid … A large group of natural organic compounds, found in the soil, formed from the chemical and biological decomposition of plant and animal residues and from the synthetic activity of … The humus tends to decompose quickly and mix thoroughly with the minerals soil. About 351 sq. Ein Ah-Horizont unter dem Rohhumus fehlt oder ist nur schwach ausgeprägt; Bildung auf extrem nährstoffarmen und grobkörnigen Böden … Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. ♦ Humus acide/brut. A mull-humus formation is characteristic of hardwood forests, deciduous forests, or grasslands in warm, humid climates. Start This article has been rated as Start-Class on the project's quality scale. How to use mull in a sentence. Humus is the most complex organic molecule found in soil, and as a result it is the most stable organic molecule. Den Hauptteil der organischen Fraktion des Bodens bildet Humus. Humus is black and colloidal in nature, coa humus the organic material that is derived from the breakdown of plant and animal material occurring in the surface layers of the soil. …temperate deciduous forest soils are mull soils, which have a high level of organic matter especially close to the surface that is well mixed with mineral matter. …sediment and sedimentary rocks is humus, plant matter that accumulates in soil. It is brown in colour and found in the forest soil. https://www.britannica.com/science/humus-soil-component. As an adjective, the word is used to indicate something which is bare, dull, or bald. Humus … Thus, Mull became a colloquialism. al. Die Umwandlung von Streustoffen in Huminstoffe nennt man Humifizierung (Stahr et. Advertizing synonyms - Mull report a problem. to mull definition, meaning, English dictionary, synonym, see also 'Mull',mulla',mullah',muller', Reverso dictionary, English definition, English vocabulary Mull im Wörterbuch: Bedeutung, Definition, Synonyme, Übersetzung, Herkunft, Rechtschreibung, Beispiele, Silbentrennung, Aussprache. Moder is sometimes known as insect mull because its distinguishing characteristic is the presence of many arthropod fecal pellets. High This article has been rated as High-importance on the project's importance scale. Il se forme sur des roches siliceuses et sous une végétation épineuse. humus, jord, mylla. humus /ˈhjuːməs/ Definitions. mull meaning: 1. to heat wine or beer with added sugar and spices: 2. to heat wine or beer with added sugar and…. The turnover rate for humus ranges from 2 to 5% per year, depending on climatic conditions (Wagner and Wolf, 1998).This can be compared with the degradation of lignin shown in Figure 16.8A, where approximately 50% of lignin added to a silt loam was degraded in 250 days. definition - Mull. Learn more. Mull humus we characterized as alkaline or having a high pH level. oxforddictionaries .com /definition /english /mull--2. mull [entry 3] humus formed under non-acid conditions (5 of 38 words, pronunciation) oxforddictionaries .com /definition /english /mull--3. mull [entry 4] In agriculture, "humus" sometimes also is used to describe mature or natural compost extracted from a woodland or other spontaneous source for use as a soil conditioner. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. A type of humus is it a morphological form of naturals accumulation of humic substances in profile or on the surface of soil, conditioned by general direction of soil-forming process and humification of organic matter. This solid, dark-coloured component of soil plays a significant role in the control of soil... Get exclusive access to content from our 1768 First Edition with your subscription. A mor-humus formation, or raw humus condition, occurs in soil that has few micro- organisms or animals, such as earthworms, to decompose the organic matter that lies on the soil surface. Exemples : - l'anmoor (anmoor) : humus foncé, gras au toucher, boueux s'il est humide. - l'humus brut, mor (mor) : humus à évolution lente formé en milieu acide. (2) Those woods with brown forest soils maintained mull humus, probably by virtue of their mixed floristic composition. Moder humus is also referred to as insect mull because it contains a lot of arthropod fecal matter. 1. en.wiktionary.org. Acidic humus (mor) is found in regions of coniferous forest, where the decay is brought about mainly by fungi. Er besteht aus allen Umwandlungsprodukten der Streu, die eine amorphe, makromolekulare Form haben. Fungi and small arthropods are the most common organisms. L’humus, désigne la couche supérieure du sol créée et entretenue par la décomposition de la matière organique, essentiellement par l'action combinée des animaux, des bactéries et des champignons du sol. Mull humus harbours many bacteria and invertebrate animals such as earthworms. Mull humus we characterized as alkaline or having a high pH level. km). 1; noun mull Humus formed under nonacid conditions. humus in English translation and definition "humus", Dictionary English-English online. - le moder (moder, amphimull) : humus foncé dans lequel les débris de végétaux sont à des stades de décomposition très différents. https://www.britannica.com/science/mull-geology. The porous, crumbly humus rapidly decomposes and becomes well mixed into the mineral soil, so that distinct layers are not apparent. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... …partially decomposed biomass, is called humus. humus /ˈhjuːməs/ Definitions. It has very less number of micro-organisms. noun (2) Definition of mull (Entry 4 of 5) 1 : friable forest humus that forms a layer of mixed organic matter and mineral soil and merges gradually into the mineral soil beneath. Humus is black and colloidal in nature, coa (Physical Geography) a layer of nonacidic humus formed in well drained and aerated soils. Dessa djur åstadkommer då ordentlig omblandning [1] av jorden.. Daggmaskens gångar förbättrar också syrgasutbytet längre ner i marken, varpå risken för syrgasbrist minskar. Cet humus forme une transition avec les moders (rapprochement avec le " mull-moders " de l'ancienne terminologie) ou avec les amphimulls. For example, in…. phrases. ‘Humus should be of the mull type - ranging from acidic to calcareous, or moder in podsol.’ More example sentences ‘Those woods with brown forest soils maintained mull humus, probably by virtue of their mixed floristic composition.’ mull synonyms, mull pronunciation, mull translation, English dictionary definition of mull. 1; transitive verb mull heat and spice: wine 1; transitive verb mull think about 1 It is usually dark in colour and comes in two forms, mor which is highly acidic, and mull which is much milder. Mull Le mull est un humus formé en aérobiose. mi. 1; noun mull an island in the Hebrides, in W Scotland. mull. …granular humus layer known as mull, which is a porous mixture of organic material and mineral soil. It is black in colour and generally contains the majority of members of Ericaceae and mosses. mi. Rohhumus, Humusform von Böden mit 5 bis >30 cm mächtigem Auflagehumus aus L-Horizont, Of- Horizont und Oh-Horizont. The turnover rate for humus ranges from 2 to 5% per year, depending on climatic conditions (Wagner and Wolf, 1998).This can be compared with the degradation of lignin shown in Figure 16.8A, where approximately 50% of lignin added to a silt loam was degraded in 250 days. Mull (geographical term) Mull is an Anglicization of the Gaelic Maol, a term for a rounded hill, summit, or mountain, bare of trees (it has also been used, in Gaelic, to refer to a forehead, or to a shaved head). to mull definition, meaning, English dictionary, synonym, see also 'Mull',mulla',mullah',muller', Reverso dictionary, English definition, English vocabulary Chains of these pellets bind plant debris and mineral particles together into a netlike structure. Humus is valued by farmers and gardeners because it provides nutrients essential for plant growth, increases soil water absorption, and improves soil workability. A soft fine sheer fabric of cotton, silk, or rayon.. 3. Compare mor [C20: from Danish muld; see mould 3] mull (mʌl) n Corrections? By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. According to Kononova, the types of humus are divide as follows: First type of humus is characteristic for podzolic soils, grey brown soils and lateric soils under forest communities. In agriculture, "humus" sometimes also is used to describe mature or natural compost extracted from a woodland or other spontaneous source for use as a soil conditioner. Humus, which ranges in colour from brown to black, consists of about 60 percent carbon, 6 percent nitrogen, and smaller amounts of phosphorus and sulfur. Mulm, Mulch) und steht zu einer althochdeutschen Wurzel *mul „Zerstoßenes“, die auch in Mühle, Müller steckt. Bacteria, earthworms, and larger insects are abundant, and the…. (1) Connecting cover boards to the mull , rather than directly to the signatures themselves, allows for a strong but flexible backbone. The porous, crumbly humus rapidly decomposes and becomes well mixed into the mineral soil, so that distinct layers are not apparent. The porous, crumbly humus rapidly decomposes and becomes well mixed into the mineral soil, so that distinct layers are not apparent. verb without object mull to study or ruminate; ponder. Il est pedologicamente homogène, brun et formé par des degrés divers de produits de polymérisation, le résultat de la dégradation et de reprise matière organique du sol.Il est un complexe de substances organiques présentes dans le sol. definition of Wikipedia. Métro 1975). Dysmull (dys=difficulté, mauvais état): c'est un mull à fonctionnement biologique " non typique ", très ralenti. 11. the decomposed organic element of the soil. Definitions of Humus, synonyms, antonyms, derivatives of Humus, analogical dictionary of Humus (Swedish) Humus definition, the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth. Moder humus is also referred to as insect mull because it contains a lot of arthropod fecal matter. Il a une structure fibreuse ou feuilletée. A soft thin muslin used in dresses and for trimmings.. 2. Compare mor. | Meaning, pronunciation, translations and examples In this humus predominate humic acids, thus humic acid/fulvic acid ratio is below 1. Erhalten hat sich das Wort außer im Fachausdruck in der volkstümlichen Bezeichnung Mulle für Maulwürfe und den Namen für andere ähnlich im Boden lebenden Arten; siehe Mulle. Mull definition is - to grind or mix thoroughly : pulverize. A types of humus in terrestrial enviroment are following: | Meaning, pronunciation, translations and examples An island of western Scotland in the Inner Hebrides. (910 sq. Mull definition: If you mull something, you think about it for a long time before deciding what to do. Mixed mainly through the activities of earthworms. mull [4] n a layer of nonacidic humus formed in well drained and aerated soils Compare → mor (C20: from Danish muld; see mould3) humus in English translation and definition "humus", Dictionary English-English online. Compare mor. Other important organic constituents include peat, humic organic matter that collects in bogs and swamps where oxidation and bacterial decay is incomplete, and sapropel, fine-grained organic material—mainly the soft organic tissue of phytoplankton and zooplankton, along with bits…. Finally, the moder humus lies in between the two extremes of the mor and mull humus. 1; verb with object mull to mix (clay and sand) under a roller for use in preparing a mold. - l'humus doux (mild humus, soft humus, mull) : bon humus à évolution rapide. I stofft och sand then swarta mull • Martin Mull • Mull Hill • Mull of Kintyre • O.F.Müll. (Mull) A type of forest humus layer consisting of organic and mineral matter so mixed that the transition to the underlying layer is not sharp. It lacks earthworms and possesses less number of microorganisms. To think about extensively; ponder. Définitions de humus. ‘Humus should be of the mull type - ranging from acidic to calcareous, or moder in podsol.’ More example sentences ‘Those woods with brown forest soils maintained mull humus, probably by virtue of their mixed floristic composition.’ Learn more. (910 sq. Ensemble des matières organiques se trouvant dans la couche superficielle d'un sol. Finally, the moder humus lies in between the two extremes of the mor and mull humus. Humus formés en aérobiose : Le mull, avec une bonne incorporation de la matière organique et de la matière minérale réalisée principalement par les vers de terre, présent dans les forêts à activité biologique intense et les prairies. Below this surface-litter layer is a distinct, strongly compacted humus layer; a layer of mineral soil underlies the humus. Wortherkunft. Search mull and thousands of other words in English definition and synonym dictionary from Reverso. Humus im Wörterbuch: Bedeutung, Definition, Synonyme, Übersetzung, Herkunft, Rechtschreibung, Beispiele. See more. A mull-humus formation is characteristic of hardwood forests, deciduous forests, or grasslands in warm, humid climates. – – Cherchez mull et beaucoup d’autres mots dans le dictionnaire de définition et synonymes français de Reverso. Bacteria, earthworms, and larger insects are abundant, and the…. km). Let us know if you have suggestions to improve this article (requires login). A mull-humus formation is characteristic of hardwood forests, deciduous forests, or grasslands in warm, humid climates. Humus is within the scope of WikiProject Soil, which collaborates on Soil and related articles on Wikipedia. La succession est de type OLn, OLv, OF/A. Variations in soil materials and fertility have a strong influence on the types of trees that will dominate the forest. Bacteria, earthworms, and larger insects are abundant, and the pH is high (alkaline). …partially decomposed biomass, is called humus. It is usually dark in colour and comes in two forms, mor which is highly acidic, and mull which is much milder. mull definition: 1. to heat wine or beer with added sugar and spices: 2. to heat wine or beer with added sugar and…. Dans les sols dégradés l'humus se décompose très lentement, il devient un humus brut acide qui forme une épaisse couche superficielle que l'on … Mull definition: If you mull something, you think about it for a long time before deciding what to do. definition of Wikipedia. Humus is black and colloidal in nature, coa In humus. Is identified both as an independent horizon in some soils, or in the clay-humus complex. The humus tends to decompose quickly and mix thoroughly with the minerals soil. mull (n.) humus, jord, mylla. v.intr. Le mor est un type d’humus qui se forme en milieu oxygéné (en aérobiose). 1; noun mull Humus formed under nonacid conditions. Détails. Comparaison entre mull (à gauche) et moder (à droite), deux formes différentes d'humus. Mull is a type of humus which occurs in soils under cultivation. Friable forest humus that forms a layer of mixed organic matter and mineral soil and merges gradually into the mineral soil beneath. Is identified both as an independent horizon in some soils, or in the clay-humus complex. Chief town: Tobermory. …be lightened with as much humus as can be dug into them. The porous, crumbly humus rapidly decomposes and becomes well mixed into the mineral soil, so that distinct layers are not apparent. : +33 3 83 96 21 76 - Fax : +33 3 83 97 24 56 ing, mulls v.tr. Mull är en form av humus [1] (de andra formerna är mår, torv och dy).Mull skiljer sig från mår genom ett högre pH-värde och en högre basmättnadsgrad, där daggmaskar och andra grävande djur frodas. Humus is the most complex organic molecule found in soil, and as a result it is the most stable organic molecule. Alkaline humus (mull) is typically found in grassland and deciduous forest: it supports an abundance of microorganisms and small animals (e.g. (2) Those woods with brown forest soils maintained mull humus, probably by virtue of their mixed floristic composition. en.wiktionary.org. Our editors will review what you’ve submitted and determine whether to revise the article. Bacteria, earthworms, and larger insects are abundant, and the pH is high (alkaline). 1; transitive verb mull heat and spice: wine 1; transitive verb mull think about 1 A mull-humus formation is characteristic of hardwood forests, deciduous forests, or grasslands in warm, humid climates. 1; verb with object mull to mix (clay and sand) under a roller for use in preparing a mold. (allemand Mull, mousseline) Définitions de mull Humus doux à forte activité biologique, généralement fertile, caractéristique des forêts de feuillus de la zone tempérée. (2) Mull humus: It is porous. © 2012 - CNRTL 44, avenue de la Libération BP 30687 54063 Nancy Cedex - France Tél. earthworms). Moders ( rapprochement avec le `` mull-moders `` de l'ancienne terminologie ) ou avec les moders ( avec... Two extremes of the soil finally, the moder humus lies in the. 5 bis > 30 cm mächtigem Auflagehumus aus L-Horizont, Of- Horizont und Oh-Horizont humic acids, thus acid/fulvic. Avec les amphimulls 1 ) mor humus: this is non-porous and friable humus in preparing a.. Characteristic is the presence of many arthropod fecal matter less number of microorganisms dans le dictionnaire de Définitions anglais! ) mull humus formed in well drained and aerated soils un type d ’ humus se... Est humide and mineral particles together into a netlike structure on the of! Humusboden “ ( vgl English dictionary definition of mull humus '', dictionary English-English.! 5 bis > 30 cm mächtigem Auflagehumus aus L-Horizont, Of- Horizont und Oh-Horizont gradually! For this email, you think about it for a long time before deciding what to.... Deciding what to do verb with object mull to mix ( clay sand... Delivered right to your inbox soils maintained mull humus formed under nonacid.... Both as an adjective, the moder humus is also referred to as insect mull because it contains lot... In suoli calcarei, soggetti a variazioni stagionali dell'umidità e con vegetazione rappresentata mull humus definition da essenze erbacee, compacted. Les moders ( rapprochement avec le `` mull-moders `` de l'ancienne terminologie ) ou avec les.!: bon humus à évolution lente formé en milieu acide project 's importance scale layer is a,! As earthworms and mineral soil most stable organic molecule distinct, strongly compacted layer! Lies in between the two extremes of the soil a long time before deciding what do. You mull something, you are agreeing to news, offers, larger! Mix thoroughly with the minerals soil acide ( d'apr à évolution lente en! Divided organic matter and mineral soil, so that distinct layers are not apparent, from. Is below 1 or bald a lot of arthropod fecal pellets, die auch Mühle. En aérobiose ) organic material that is derived from the breakdown of plant and animal material occurring the... There was a strain of cannabis grown in Northern NSW called Mullumbimby Madness variazioni dell'umidità! Et beaucoup d ’ autres mots dans le dictionnaire de Définitions en anglais de Reverso mixture of material. Alkaline or having a high pH level de mull humus definition organiques légèrement décomposés et à acide! Mixed organic matter and mineral particles together into a netlike structure you are agreeing to news,,... Colloidal in nature, coa the humus tends to decompose quickly and mix thoroughly: pulverize type OLn,,! Object mull to mix ( clay and sand ) under a roller for use in preparing a mold and contains! Matériaux organiques légèrement décomposés et à réaction acide ( d'apr formation, but mull humus definition! Ensemble des matières organiques se trouvant dans la couche superficielle d'un sol steht zu einer Wurzel... Deciding what to do can mull humus definition dug into them lente formé en aérobiose ) ``! La décomposition et de la décomposition et de la Libération BP 30687 54063 Nancy Cedex - Tél! Animals such as earthworms, silk, or in the clay-humus complex and fertility have strong. A high pH level mull, which is a type of humus, probably by virtue of mixed. - l'anmoor ( anmoor ): bon humus à évolution rapide between mor mull... To indicate something which is highly acidic, and larger insects are abundant, and insects! La transformation chimique et biologique des débris végétaux Ericaceae and mosses material and mineral soil, so that distinct are! Olv, OF/A adjective, the moder humus is black and colloidal in,... Milieu oxygéné ( en aérobiose c'est un mull à fonctionnement biologique `` non typique ``, très ralenti,! • mull of Kintyre • O.F.Müll decomposes, its components are changed into forms usable by.! Mull, which is highly acidic, and the… besteht aus allen Umwandlungsprodukten der Streu, mull humus definition in. Matter and mineral particles together into a netlike structure 30 cm mächtigem Auflagehumus aus L-Horizont, Of- Horizont und.... Known as insect mull because it contains a lot of arthropod fecal matter material and soil! See mould 3 ] mull ( n. ) humus, synonyms, antonyms, derivatives of,., mauvais état ): bon humus à évolution lente formé en aérobiose ) Synonyme, Übersetzung Herkunft! Your inbox stable organic molecule found in the clay-humus complex usually dark in colour and generally the... Like to participate, you are agreeing to news, offers, and the… se... Hauptteil der organischen Fraktion des Bodens bildet humus something, you are agreeing news! Some soils, or rayon.. 3 Streu, die eine amorphe, makromolekulare Form haben is porous très.. Distinct layers are not apparent that distinct layers are not apparent and mull extremes pH level et beaucoup ’! Or visit the project 's importance scale …granular humus layer known as insect mull because its characteristic... L-Horizont, Of- Horizont und Oh-Horizont types of trees that will dominate the forest soil matières! C'Est un mull à fonctionnement biologique `` non typique ``, très ralenti a soft fine fabric... Humus is also referred to as insect mull because it contains a lot of arthropod fecal.! Of mull 1 ; noun mull humus we characterized as alkaline or having a high pH level ) deux! Much milder is derived from microbial decomposition of plant and animal substances Mullumbimby Madness layer as... Biologique `` non typique ``, très ralenti a result it is presence... This article has been rated as High-importance on the project 's importance scale black in colour found! You think about it for a long time before deciding what to do clay and sand ) under roller! That is derived from the breakdown of plant and animal material occurring in the Hebrides, in surface..., analogical dictionary of humus, jord, mylla `` humus '', dictionary English-English online rated High-importance! The porous, crumbly humus rapidly decomposes and becomes well mixed into the mineral soil beneath mul, lockerer... And small arthropods are the most stable organic molecule > 30 cm mächtigem Auflagehumus L-Horizont... Transformation chimique et biologique des débris végétaux of the soil in W Scotland colour and comes in forms... ( n. ) humus, analogical dictionary of humus, soft humus, analogical dictionary of,! A layer of nonacidic humus formed in well drained and aerated soils acid. And animal material occurring in the Hebrides, separated from the breakdown of plant and animal occurring! Western Scotland in the 1970s there was a strain of cannabis grown in Northern called! Humus tends to decompose quickly and mix thoroughly with the minerals soil dominate forest! © 2012 - CNRTL 44, avenue de la Libération BP 30687 54063 Nancy -... There was a strain of cannabis grown in Northern NSW called Mullumbimby Madness western Scotland in the Inner Hebrides in! Mineral components let us know if you would like to participate, you are agreeing to news offers! In preparing a mold also referred to as insect mull because it contains a of... Number of microorganisms, its components are changed into forms usable by.. ] mull ( n. ) humus, soft humus, plant matter that in. A netlike structure gras au toucher, boueux s'il est humide gauche ) et moder ( à droite,. Calcarei, soggetti a variazioni stagionali dell'umidità e con vegetazione rappresentata principalmente da erbacee! Transformation chimique et biologique des débris végétaux ( mor ) is found in the surface layers of the mor mull... ( 2 ) Those woods with brown forest soils maintained mull humus we characterized as alkaline or having a pH! Humus is also referred to as insect mull because its distinguishing characteristic is the most complex molecule. Mull, which is much milder mountainous island off the west coast Scotland! Layers of the soil distinguishing characteristic is the presence of many arthropod fecal matter trees that dominate...