Water infiltration rate
Water infiltration rate is a measurement of the amount of water which is able to pass through a material or surface, such as soil. It is commonly used in agriculture and earth sciences to assess the rate at which water can enter the ground and infiltrate down into the soil.
The infiltration rate is influenced by a variety of factors including soil texture, the presence of organic matter and the rate of water flow at the surface. Generally, infiltration rates are considered to be low if slower rates of water entry are observed, often due to a higher amount of impermeable and compacted layers within the soil. Low water infiltration can have a number of detrimental effects including a decrease in crop production, leaching of contaminants in the soil, and a decrease in stream flow and water supply.
In agriculture, the infiltration rate of a soil type is an important indicator of its suitability for agriculture and crop production. Poor saturation of a soil type can lead to waterlogging, anaerobic conditions and salinization. The infiltration rate is also important in order to understand the potential of a soil type to act as a reservoir for water, and how it will affect water availability in the future.
In order to improve the infiltration rate of a soil type, a variety of methods can be implemented. Incorporation of organic matter into the soil can be beneficial as it can improve the water holding capacity of a soil and increase the rate of water infiltration. Cover crops, mulches and plastic mulches can also be used to increase the infiltration rate of a soil, as they reduce runoff and transpire more water back into the soil.
The infiltration rate can also be increased in constructed soil environments, such as gardens, parks, and sports fields. Here, various soil amendments can be used to increase the rate of water infiltration, such as gravel, sand and compost. Practicing deep water and controlled drainage practices can also help to increase the infiltration rate of a constructed soil as it decreases the amount of impermeable layers of soil.
Overall, measuring the infiltration rate of a soil is an important practice as it can provide insight into the physical, chemical and biological health of the soil and its potential fertility. By improving the infiltration rate of soil, it is then possible to improve crop production and water availability in the area.