Humus is dark, organic material that forms in soil when plant and animal matter decays. Diane Boudreau Tara Ramroop Agriculture depends on nitrogen and other nutrients found in humus. noun the dark organic material in soils, produced by the decomposition of vegetable or animal matter and essential to the fertility of the earth. Humus is one of the most nutritious planting materials around and is used for planting as well as for treating soil. Humus significantly affects the bulk density of soil and contributes to its retention of moisture and nutrients. Chemistry, Earth Science, Geology, Geography, Physical Geography, This lists the logos of programs or partners of NG Education which have provided or contributed the content on this page. They discover how soil is formed and explore how plants get nutrients from topsoil. © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins What does hummus mean? 1 of 3, Northern Nut Growers Association Thirty-Fourth Annual Report 1943. When plants drop leaves, twigs, and other material to the ground, it piles up. Humus is one of the most abundant forms of organic matter present on the Earth’s surface (Anderson, 1979) and it consists of a complex mixture of many different compounds of difficult definition, characterized by molecular weights ranging from 700 to 300,000 Da. The word humus is used incorrectly in a lot of places. What’s The Difference Between “Yule” And “Christmas”? Learn more about biotic factors with this curated resource collection. chemical element with the symbol N, whose gas form is 78% of the Earth's atmosphere. Soil Biology and Biochemistry 26:183–220 doi : 10.1016/0038-0717(94)90161-9 ^ Humintech® | Definition Of Soil Organic Matter & Humic Acids Based Products The People’s Choice 2020 Word Of The Year: 2020 Was A $#@#%%$@! This leaf litter will eventually decompose and become nutrient-rich humus. 1790–1800;
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