Soil: a colloidal system

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Soil Science Research - Federal University of São Carlos

Published on Mar 26, 2021
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The soil's ability to retain nutrients or provide them to plants is directly related to its behavior as a colonial system. This behavior is responsible for a series of characteristics and chemical properties that a soil can present. In this class, we will better understand how it works and why soil is seen as a colloidal system. In addition, we will learn about the main characteristics of a colloid in the soil and which soil components are considered colloids. Want to understand this subject better? Keep reading! If you have any questions, leave them in the comments so we can help you! Don't forget to visit our website! There, you will find all of our YouTube content organized in a super didactic way and in the best study sequence for you: https://portalgepes.com/ Become a member of our channel and get benefits: / @gepes.soilscience Follow us on Instagram: / gepes.soilscience Want to suggest new content? Click here: https://forms.office.com/r/bdZ8cNvRVX 00:00 Introduction 01:44 Concept of colloidal system 03:56 Soil colloids 04:58 Types of soil colloids Main characteristics 07:56 Tiny size 09:00 High specific surface area 16:49 Presence of charges 19:25 Types of soil electrical charges according to origin 20:07 Permanent, structural or constant charges 23:38 Variable or pH-dependent charges 31:23 Permanent charges x Variable charges

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