Category: Soil science

What is Soil Solarization? |

Soil Solarization Soil solarization is a broad-spectrum control method, simple, economically feasible and environmentally friendly. It is an effective method for the control of many weeds. It does not affect soil properties and usually produces higher yields. There are also some disadvantages in its implementation. For example, previous irrigation is a requirement, (or frequent and abundant rain) and the soil must be kept solarized (non-producing) for a period of at least one month. Results are […]

What is Infiltration?


What is Infiltration? What is infiltration? The process of entry of water into the soil by downward flow through all or part of the soil surface is termed as infiltration It is the entry of fluid from one medium to another What is infiltration rate? It is defined as the volume of water flowing into the profile per unit of soil surface area per unit time It is not constant over time. Generally, it is […]

Adhesion, Cohesion and Soil Moisture tension |

Adhesion and cohesion

Adhesion Cohesion and Soil Moisture tension What are the forces responsible for water retention in Soil? Hydrogen bonding accounts for two basic forces responsible for water retention and movement in soils These are Adhesion and Cohesion The forces of adhesion and cohesion make it possible for the soil solids to retain water and control its movement and use What is Adhesion? Adhesion besically is the force of attraction between the two dissimilar molecules Eg – […]

Soil Bulk Density, Particle Density and Porosity |

Particle density

Soil Bulk density, particle density and Porosity What is soil made up of? Soil is made up of 4 components 1. Soil Solids containing minerals and other solid particles that constitute 45 percent 2. Soil Water constitutes 25 percent 3. Soil Air constitutes porespaces i.e. part not occupied by water or solids 4. Organic matter constitutes 5 percent What is Particle Density? It is the ratio of a given mass (or weight) of soil solids […]

Soil structure |

Soil structure

What is Soil structure? The structure of a soil refers to the arrangement of the soil particles and the adhesion of smaller particles to form large ones or aggregates According to Marshall and Holmes, It is the arrangement of the solid parts of the soil and of the pore spaces located between them You may also like to read – What is Soil texture? | Soil structure is associated with the tilth of the […]

Soil texture |

Soil textural classes

What is Soil texture? It refers to the relative proportion of mineral particles of various sizes in the given soil i.e., the proportions of coarse (sand), medium (Silt) and fine particles (clay) What is the size of mineral particles present in the soil? The mineral particles are classified into 4 groups as follows Course sand These particles have a size between 2 mm to 0.2 mm Fine sand These particles have a size between 0.2 […]

Soil Depth |

Soil depth

What is Soil Depth? Soil depth refers to the thickness of soil cover over hard rock or hard substratum below which roots cannot penetrate It is directly related to 1. development of root system 2. water storage capacity 3. nutrient supply 4. feasibility for land leveling and land shaping Classification of Soil depth According to the Soil Conservation Division, New Delhi, following categories of soil have been mentioned on the basis of its depth Very […]

Soil Air |

Is air present only in atmosphere?…No..! Air is also present in soil which is known as soil air What is soil composed of? Soil is composed of solid, liquid and gaseous constituents in various proportions. Also read our various other related articles under Soil science Category Soil Temperature – Comprehensive Overview Soil science – studying soil Soil health card (SHC) Soil groups of India Classification of soils Soil texture – importance and textural classes What […]

Soil Temperature |

Soil temperature

Soil temperature is an important growth factor not only for crops but also for the soil microbial population. Keep on reading and try to answer an MCQ at the end of this article…! What is soil temperature? Temperature is actually the measure of heat. What is heat in relation to soil temperature? The heat means the energy obtained from random motion i.e. vibration of molecules of a substance. The speed of vibration of moleciles present […]

Nutrient contents in fertilizers |

Nutrient content of fertilizers

Introduction There are various fertilizers used in agriculture. All fertilizers contain various nutrients out of which Nitrogen, potassium and phosphorus are considered major nutrients for plants. Fertilizers are classified on the basis of nutrients they supply such as nitrogenous, phosphatic, potassic fertilizers etc. Also read our other related articles under AGRICULTURE – AT A GLANCE SERIES Plant growth regulators and functions at a Glance Instruments used in Agriculture and their uses at a glance Disorders […]

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