However, where soil has been compacted the most effective way of boosting soil water holding capacity is to create a favourable structure by loosening the soil. Soil water holding capacity tends to improve as clay content increases. A. B. Soil water holding capacity is the amount of water that a given soil can hold against the force of gravity. Raising Soil Organic Matter Content to Improve Water Holding Capacity 4 The Importance of Soil Water Holding Capacity The natural WHC of Florida’s mineral soils is low due to their sandy nature and low OM content. What is the water holding capacity of soil? how to increase the water‐holding capacity has been one major issue in that area. Soil water holding capacity is a term that all farms should know to optimize crop production. The Amount of water retained and stored in a soil after watering and subsequent drainage is important in plant growth and hydrological studies. The amount of water in a plow layer (8 inches) of the compost-amended soil increased to 1.9 inches compared with 1.3 inches in unamended soil. In other words, a soil with a high percentage of silt and clay particles, which describes fine soil, has a higher water-holding capacity. Soil water holding capacity is controlled primarily by the soil texture and the soil organic matter content. Well structured soil can have double the water holding capacity of a poorly structured soil with a similar texture. Soils with smaller particle sizes, such as silt and clay have larger surface area can hold more water compared to sand which has large particle sizes which results in smaller surface area. The water holding capacity of a soil is calculated by summing the capacity of each layer in the root zone. D. As the average size of the soil particles decreases, nutrient-holding capacity decreases. The objective of the study is to conduct a series of experiments by various treatments of the soils, as well as various irrigation schemes, in order to improve the water‐holding capacity in sandy lands. C. As the average size of the soil particles decreases, aeration decreases. In a 2000 study, Maynard found that increasing the water-holding capacity of the soil by adding compost helped all crops during summer droughts by reducing periods of water stress. This storage capacity of the soil is called its water holding capacity. As the average size of the soil particles decreases, water infiltration increases. Fine sandy loam, silt loam and silty clay loam soil store the largest amount of water, whereas sand, loamy sand and sandy loam have limited water storage capacity. Secondly, use Figure 3 to calculate the water holding capacity of each soil layer in the root zone. For example, 25cm of clay loam with an available water of 1.8mm water per cm of soil, can store 45mm of available water. Water holding capacity of the soil is the amount of water held by the capillary spaces of the soil after the percolation of gravitational water into the deeper layers. The table illustrates water-holding-capacity differences as influenced by texture. Soil texture is a reflection of the particle size distribution of a soil. Organic matter percentage also influences water-holding capacity. Secondly, use Figure 2 to calculate the water holding capacity of each soil layer in the root zone. Soil experiment is used to test the water holding capacity of soil. For example, 25cm of clay loam with an available water of 1.8mm water per cm of soil, can store 45mm of available water. Simply defined soil water holding capacity is the amount of water that a given soil can hold for crop use. As the average size of the soil particles decreases, water-holding capacity decreases. 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