{"id":12120,"date":"2023-06-05T17:48:03","date_gmt":"2023-06-05T21:48:03","guid":{"rendered":"https:\/\/seeds.ca\/schoolfoodgardens\/?p=12120"},"modified":"2023-06-12T08:20:23","modified_gmt":"2023-06-12T12:20:23","slug":"looking-beneath-the-surface-a-guide-to-soil-composition","status":"publish","type":"post","link":"https:\/\/seeds.ca\/schoolfoodgardens\/looking-beneath-the-surface-a-guide-to-soil-composition\/","title":{"rendered":"Looking Beneath the Surface: A Guide to Soil Composition"},"content":{"rendered":"<p>Written by: Maahi Jain<br \/>\nEdited by: Consy Sonde<br \/>\nDesigned by: Tvisha Lakhani<br \/>\nPublished by: Kiritika Rana<\/p>\n<p><span style=\"font-weight: 400;\">We all know what soil is, but what is known the least to people is that it\u2019s a fundamental element to the ecosystem, and also one of the many factors that help lessen the impacts of global warming. Soil is an underrecognized part of Earth and not a lot know just how great its contribution is to creating a livable, and sustainable environment.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Soil is a complex substance, with an even more complex process. Soil, ultimately, comes from various types of rocks\u2014igneous, sedimentary, and metamorphic. Igneous rocks are formed when lava cools down, while sedimentary rocks are formed when small pieces of rock stick together. Metamorphic rocks are formed when the rocks get heated and\/or pressed. These rocks gradually break down into smaller particles through the process of weathering, finally turning into soil. Weathering can occur physically, chemically, or biologically:\u00a0<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Physical (mechanical) &#8211; breakdown of rocks as a result of <\/span>external causes, including temperature change, colliding rocks (abrasion), or frost.<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Chemical &#8211; breakdown due to minerals in the rocks reacting with water, air, or other chemical substances.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Biological &#8211; breakdown by animals; creatures form cracks, allowing air and water to seep through<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\"><img loading=\"lazy\" class=\" wp-image-12121 alignleft\" src=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-139x300.png\" alt=\"\" width=\"125\" height=\"270\" srcset=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-139x300.png 139w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-473x1024.png 473w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-709x1536.png 709w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed.png 739w\" sizes=\"(max-width: 125px) 100vw, 125px\" \/>The characteristics of soil\u2014colour, texture\u2014depend on the five main factors affecting soil formation. These factors are climate, time, topography, living organisms, and parent material. Each process takes <\/span><span style=\"font-weight: 400;\">tens of thousands of years to complete and are important to creating the soil we know and use today:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Climate<\/strong> &#8211; different kinds of soil arise from being exposed to different temperatures. Soils form easily when exposed to temperate, or tropical, conditions, and areas with controlled precipitation. Places with excessive water will result in leaching of nutrients, forming acidic soils, whereas regions with humid conditions will create soil mainly with organic matter.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Time<\/strong> &#8211; depending on the time it takes for it to be weathered, soil may form with varying characteristics. According to research, Australia has some of the oldest soils.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Topography<\/strong> &#8211; this refers to the length, surface, and shape of a slope. Slope affects how much rainfall receives.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Living organisms<\/strong> &#8211; small bacteria and insects help to decompose plant and animal matter, increasing soil fertility.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\"><strong>Parent material<\/strong> &#8211; this is what forms the very basis of soil. It is produced from different rocks, going through the tedious process of weathering.\u00a0<\/span><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><span style=\"font-weight: 400;\">As soil forms, it develops layers\u2014called horizons\u2014each consisting of different minerals and substances. These layers form what\u2019s called a soil profile and help to provide nutrients assisting with plant growth.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">O (organic) &#8211; this is the topmost layer and consists of mostly litter and organic matter, usually decomposed plant and animal matter.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A (topsoil) &#8211; it contains the accumulation of humus. This is the darkest layer due to high amounts of organic matter.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">E (eluviated) &#8211; a layer that\u2019s been eluviated (leached) of its clay and minerals. This causes it to be sandier and paler in colour compared to other layers.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">B (subsoil) &#8211; rich in the minerals that leached from previous soil layers. It is less fertile than other soils, however, it retains more moisture.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">C (parent material) &#8211; layer of accumulation of parent material.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">R (bedrock) &#8211; the layer of bedrock from which parent material forms.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\"> <img loading=\"lazy\" class=\"size-medium wp-image-12122 alignright\" src=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-1-300x263.png\" alt=\"\" width=\"300\" height=\"263\" srcset=\"https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-1-300x263.png 300w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-1-1024x896.png 1024w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-1-768x672.png 768w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-1-1536x1344.png 1536w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-1-1080x945.png 1080w, https:\/\/seeds.ca\/schoolfoodgardens\/wp-content\/uploads\/2023\/06\/unnamed-1.png 1600w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/span><\/p>\n<p><span style=\"font-weight: 400;\">There are six types of soil\u2014sandy, clay, silt, peat, chalk, and loam. Deciding the type of soil needed for efficient plant growth is just as important as learning to take care of it.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sandy soil is light in colour and dry, with little to no nutrients. They are able to drain water quickly due to the large spaces between the sand particles.\u00a0<\/span><span style=\"font-weight: 400;\">Furthermore, having additional organic matter present will greatly improve its water retention capability.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Clay soil, during winter, is wet and cold, whereas in warmer weather, it remains dry. Clay soils are able to hold high amounts of water because of the large clay particles.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Silt soil is very fertile, and because they\u2019re composed of medium-sized particles, silt soil can hold a fair amount of water.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Peat soil is extremely high in organic matter levels and is very rarely used in gardening.\u00a0<\/span><span style=\"font-weight: 400;\">Chalk soil is basic in pH due to high levels of calcium carbonate present.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Finally, loam soil is a soil widely used throughout Canada and is a mixture of sand, silt, and clay soil. This soil is fertile and has good water retention.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Soil is vital, not just in the agriculture and farming industry, but for the ecosystem to thrive as well. It is recommended that thorough research be done to decide which soil will work best for which plant. Taking care of soil is important, as it does almost the same work as trees\u2014providing oxygen, and helping to make communities a livable space.\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n<p style=\"text-align: center;\"><b>Works Cited<\/b><\/p>\n<p><i><span style=\"font-weight: 400;\">The History of Soil Science<\/span><\/i><span style=\"font-weight: 400;\">. (n.d.). Rogitex. Retrieved May 26, 2023, from <\/span><a href=\"https:\/\/rogitex.com\/blogs\/soil-for-humanity\/history-of-soil-science\"><span style=\"font-weight: 400;\">https:\/\/rogitex.com\/blogs\/soil-for-humanity\/history-of-soil-science<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">How soils form | Environment, land and water<\/span><\/i><span style=\"font-weight: 400;\">. (2013, October 8). Queensland Government. Retrieved May 26, 2023, from <\/span><a href=\"https:\/\/www.qld.gov.au\/environment\/land\/management\/soil\/soil-explained\/forms\"><span style=\"font-weight: 400;\">https:\/\/www.qld.gov.au\/environment\/land\/management\/soil\/soil-explained\/forms<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Needelman, B. (2013). <\/span><i><span style=\"font-weight: 400;\">What Are Soils?<\/span><\/i><span style=\"font-weight: 400;\"> Nature Education Knowledge. <\/span><a href=\"https:\/\/www.nature.com\/scitable\/knowledge\/library\/what-are-soils-67647639\/#:~:text=Soil%20is%20a%20material%20composed,mineralogy%20of%20soils%20is%20diverse\"><span style=\"font-weight: 400;\">https:\/\/www.nature.com\/scitable\/knowledge\/library\/what-are-soils-67647639\/#:~:text=Soil%20is%20a%20material%20composed,mineralogy%20of%20soils%20is%20diverse<\/span><\/a><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Panchuk, K. (n.d.). <\/span><i><span style=\"font-weight: 400;\">5.4 Weathering and the Formation of Soil \u2013 Physical Geology<\/span><\/i><span style=\"font-weight: 400;\">. BC Open Textbooks. Retrieved May 26, 2023, from <\/span><a href=\"https:\/\/opentextbc.ca\/geology\/chapter\/5-4-weathering-and-the-formation-of-soil\/\"><span style=\"font-weight: 400;\">https:\/\/opentextbc.ca\/geology\/chapter\/5-4-weathering-and-the-formation-of-soil\/<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">Soil Types<\/span><\/i><span style=\"font-weight: 400;\">. (n.d.). Boughton. Retrieved May 29, 2023, from <\/span><a href=\"https:\/\/www.boughton.co.uk\/products\/topsoils\/soil-types\/\"><span style=\"font-weight: 400;\">https:\/\/www.boughton.co.uk\/products\/topsoils\/soil-types\/<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sposito, G. (2023, May 4). <\/span><i><span style=\"font-weight: 400;\">Soil | Definition, Importance, Types, Erosion, Composition, &amp; Facts<\/span><\/i><span style=\"font-weight: 400;\">. Britannica. Retrieved May 26, 2023, from <\/span><a href=\"https:\/\/www.britannica.com\/science\/soil\"><span style=\"font-weight: 400;\">https:\/\/www.britannica.com\/science\/soil<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><i><span style=\"font-weight: 400;\">File:Soil Profile 20210710 Hessaraghatta Main Road.jpg<\/span><\/i><span style=\"font-weight: 400;\">. (n.d.). Wikimedia Commons. [Photograph]. Retrieved May 29, 2023, from <\/span><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:Soil_Profile_20210710_Hessaraghatta_Main_Road.jpg\"><span style=\"font-weight: 400;\">https:\/\/commons.wikimedia.org\/wiki\/File:Soil_Profile_20210710_Hessaraghatta_Main_Road.jpg<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Wheeler, R. (n.d.). <\/span><i><span style=\"font-weight: 400;\">File:SoilComposition.png<\/span><\/i><span style=\"font-weight: 400;\">. Wikimedia Commons. [Photograph]. Retrieved May 29, 2023, from <\/span><a href=\"https:\/\/commons.wikimedia.org\/wiki\/File:SoilComposition.png\"><span style=\"font-weight: 400;\">https:\/\/commons.wikimedia.org\/wiki\/File:SoilComposition.png<\/span><\/a><span style=\"font-weight: 400;\">\u00a0<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>We all know what soil is, but what is known the least to people is that it\u2019s a fundamental element to the ecosystem, and also one of the many factors that help lessen the impacts of global warming. Soil is an underrecognized part of Earth and not a lot know just how great its contribution is to creating a livable, and sustainable environment.\u00a0<\/p>\n","protected":false},"author":1,"featured_media":12125,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"om_disable_all_campaigns":false,"_mi_skip_tracking":false},"categories":[25,27,24],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts\/12120"}],"collection":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/comments?post=12120"}],"version-history":[{"count":4,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts\/12120\/revisions"}],"predecessor-version":[{"id":12153,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/posts\/12120\/revisions\/12153"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/media\/12125"}],"wp:attachment":[{"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/media?parent=12120"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/categories?post=12120"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/seeds.ca\/schoolfoodgardens\/wp-json\/wp\/v2\/tags?post=12120"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}