Physical Properties of Soil

Roll it into a ball

Drainage of excess water, air movement, root growth, water retention

Cementation

<p>Formation of negative charges on soil colloids, cations attachment, absorption, linking by polarized water</p> Signup and view all the answers

<p>Amount of soil pores and their content of air or water</p> Signup and view all the answers

<p>Less oxygen, more carbon</p> Signup and view all the answers

<p>Avoid poaching, add farmyard manure, add lime</p> Signup and view all the answers

<p>Large pores in sandy soil</p> Signup and view all the answers

<p>Small pores in clay soil</p> Signup and view all the answers

<p>gravel, coarse sand, fine sand, silt, clay</p> Signup and view all the answers

<p>humus</p> Signup and view all the answers

<p>texture, structure, porosity, chemistry, and colour</p> Signup and view all the answers

<p>by the amount of sand, silt, and clay present</p> Signup and view all the answers

<p>a soil with equal amounts of sand, silt, and clay</p> Signup and view all the answers

<p>by calculating the percentage of sand, silt, and clay</p> Signup and view all the answers

<p>Micro-pore</p> Signup and view all the answers

<p>when silt, sand, and clay are held together by colloidal particles</p> Signup and view all the answers

<p>by taking a handful of dry soil and adding water to it</p> Signup and view all the answers

<p>Humus is the breakdown of dead plants and animals in soil when it decomposes.</p> Signup and view all the answers

<p>The soil triangle is used to calculate the percentage of sand, silt, and clay in a soil sample, which helps determine the soil texture.</p> Signup and view all the answers

<p>Flocculation is when silt, sand, and clay are held together by colloidal particles, forming aggregates.</p> Signup and view all the answers

<p>Micro-pores are the pore spaces within aggregates that affect drainage and aeration in the soil.</p> Signup and view all the answers

<p>The amount of sand, silt, and clay determines the soil texture, which in turn influences the drainage capacity of the soil.</p> Signup and view all the answers

<p>Mineral matter comes from parent rock material and is broken down into different-sized particles like gravel, sand, silt, and clay.</p> Signup and view all the answers

<p>The main properties of soil are structure, porosity, chemistry, and color, in addition to texture.</p> Signup and view all the answers

<p>Adding water to dry soil and observing how it behaves can give insights into the soil's texture based on how it clumps together or disintegrates.</p> Signup and view all the answers

<p>Loam soil contains equal amounts of sand, silt, and clay, making it a balanced soil type.</p> Signup and view all the answers

<p>Good soil structure is necessary for drainage, air movement, root growth, and water retention.</p> Signup and view all the answers

<p>Cementation is the binding of soil particles, which helps in creating stable aggregates.</p> Signup and view all the answers

<p>Flocculation occurs when soil colloids are linked together by polarized water.</p> Signup and view all the answers

<p>Soil porosity determines the amount of air and water available to plant roots.</p> Signup and view all the answers

<p>Soil aeration can be enhanced by avoiding land poaching, adding farmyard manure, and lime. It is vital for root respiration and microbial activity.</p> Signup and view all the answers

<p>Soil with large pores drains excess water, while small pores retain water needed for plant growth.</p> Signup and view all the answers

<p>Dark soil indicates more sunlight exposure and likely high humus content, while red soil may suggest leaching.</p> Signup and view all the answers

<p>Sandy soil with large pores causes rapid drainage, leading to drought conditions during good weather.</p> Signup and view all the answers

<p>Earthworms and roots absorb oxygen and release carbon, affecting the oxygen-to-carbon ratio in soil air.</p> Signup and view all the answers