![]() Humus - Wikipedia. This article is about the organic matter in soil. For the band, see Humus (band). For the food, see Hummus. Sense Of Humus 3-10-2016 2/2 Sense Of Humus Other Files Available to Download Humus is an essential component of soil. With more humus, more nutrient and moisture is available for plants and growth increases. The three major horizons are: (A) surface horizon, (B) subsoil and (C) substratum. Some soils have an organic horizon (O) on the surface. Hard bedrock, which is not soil, uses the letter R. In soil science, humus (coined 1. Soil formation begins with the weathering of humus. In agriculture, humus is sometimes also used to describe mature, or natural compost extracted from a forest or other spontaneous source for use to amend soil. Humus contains many useful nutrients for healthy soil, nitrogen being the most important of all. Nature of humus. In this way the nitrogen (nitrogen cycle) and the other nutrients (nutrient cycle) are recycled. This process is called mineralization. Depending on the conditions in which the break down is carried out, a fraction of the organic matter does not continue into mineralization, but instead goes in the contrary direction, forming new organic chains (polymers). ![]() Frito-Lay develops sense of hummus By Neil Merrett, 10-Dec-2007 Related tags: Helathier snacks, Strauss Group, Frito-Lay Frito-lay, the snack arm of beverage group PepsiCo hopes to extend its presence in the market for healthier snacks, announcing.![]() These organic polymers are stable, that is resistant to the action of microorganisms, and constitute humus. This stability implies that once formed humus integrates the permanent structure of soil, contributing to its improvement. Humus should be differentiated from decomposing organic matter. The latter is rough- looking material and remains of the original plant are still visible. Fully humified organic matter, on the other hand, has a uniform dark, spongy, jelly- like appearance, and is amorphous. It may remain like this for millennia or more. ![]() However, humified organic matter, when examined under the microscope may reveal tiny plant, animal or microbial remains that have been mechanically, but not chemically, degraded. In most literature, humus is considered an integral part of soil organic matter. The importance of chemically stable humus is thought by some to be the fertility it provides to soils in both a physical and chemical sense. The process of organic matter decay in the soil begins with the decomposition of sugars and starches from carbohydrates, which break down easily as detritivores initially invade the dead plant organs, while the remaining cellulose and lignin break down more slowly. Lignin, which is quickly transformed by white- rotfungi. The end- product of this process, the humus, is thus a mixture of compounds and complex life chemicals of plant, animal, or microbial origin that has many functions and benefits in the soil. 21-09-2016 1/2 Sense Of Humus Sense Of Humus by Phillipp Bergmann Click here for Free Registration of Sense Of Humus Book Rated from 74 votes Book ID: D0CCBF5EE17BF5F0A7DA44E4F438D70C Date of publishing: September 14th, 2016 Number of. Sense Of Humus 30-09-2016 2/2 Sense Of Humus Other Files Available to Download Let's pay homage to humus. As the garden gets into full swing, it's a good time for such tribute, because enthusiasm can be parlayed into action. No one can say exactly what humus (pronounced HUE-mus) is because it's a witch's brew of thousands of organic compounds that result from the decomposition. The latest Tweets from Sense of humus (@SenseOfHumus). Sense of humus is a Dutch initiative to aiming to conserve and restore natural fertility of our soils. Humus-rich garden soil is valued for the presence of microbial “glues.” These are good glues that allow the nutrition inherent in good soil to attach themselves to clay particles in your existing soil to create a larger aggregate of soil. These have generous spaces. Sense Of Humus 10-09-2016 2/2 Sense Of Humus Other Files Available to Download 2 Responses to ““A Sense of Humus ”” Katie February 22, 2012 1:48 pm Reply # Great post! We’re in the market for a compost bin and this is helpful info to start narrowing down our options. Bonnie June 18, 2013 12:43 pm. Earthworm humus (vermicompost) is considered by some to be the best organic manure there is. Thus stable humus contributes little to the pool of plant- available nutrients in the soil, but it does play a part in maintaining its physical structure. This process is thought to have been important in the formation of the fertile Amazonian dark earths or Terra preta do Indio. Soil scientists use the capital letters O, A, B, C, and E to identify the master horizons, and lowercase letters for distinctions of these horizons. Most soils have three major horizons. Some soils have an organic horizon (O) on the surface, but this horizon can also be buried. The master horizon, E, is used for subsurface horizons that have a significant loss of minerals (eluviation). Hard bedrock, which is not soil, uses the letter R. Criticism of humification theory. Products of a humification process have not been observed in soil. Although 'humification' theory is unsupported by evidence, . There has been a long debate about the ability of plants to uptake humic substances from their root systems and to metabolize them. There is now a consensus about how humus plays a hormonal role rather than simply a nutritional role in plant physiology. ![]() While these nutrient cations are accessible to plants, they are held in the soil safe from being leached by rain or irrigation. Dictionary. com http: //dictionary. Whitehead, D. Journal of the Science of Food and Agriculture. Retrieved 2. 6 July 2. Humus forms in forests of the northern German lowlands. Schweizerbart, Stuttgart, Germany, 1. The nature and properties of soils. Upper Saddle River, N. J.: Prentice Hall, Inc. Comptes Rendus de l'Acad. Soil Biology and Biochemistry. Landscape and Urban Planning. Annual Review of Phytopathology. Encyclopedia of Earth. National Council for Science and the Environment. Archived 8 June 2. Wayback Machine. Washington DC^De Macedo, J. R.; Do Amaral, Meneguelli; Ottoni, T. B.; Araujo, Jorge Ara. Communications in Soil Science and Plant Analysis. Journal of Analytical and Applied Pyrolysis. Geochimica et Cosmochimica Acta. FEMS Microbiology Ecology. Soil Biology and Biochemistry. Plant litter: decomposition, humus formation, carbon sequestration, 2nd ed. Springer, 3. 38 pp., ISBN 3- 5. Levin, L., Forchiassin, F., Ramos, A. M., 2. 00. 2. Copper induction of lignin- modifying enzymes in the white- rot fungus Trametes trogii. Soil Biology and Biochemistry. Global Change Biology. Retrieved 3. 0 August 2. Retrieved 3. 0 August 2. Amazonian Dark Earths: origin, properties, management. ISBN 9. 78- 1- 4. Lehmann, J.; Kleber, M. Bioresource Technology. Theoretical and Experimental Plant Physiology. Retrieved 3. 0 August 2. Environmental Science and Technology. Bibcode: 2. 00. 8En. ST.. 4. 2. 4. 94. Sense of humus (@Sense. Of. Humus) on Twitter.
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