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Horticulture: Soils Unit
Terms in this set (23)
The substance a soil is created from
the removal of a soil, with wind and water
The mineral and organic surface of the earth capable of supporting plants.
Rich, fertile soil that is made up of about equal parts of clay, sand, and silt.
Second largest soil particle. Adds space and air to the soil, but reduces the soil's ability to hold onto water
Second-smallest soil particle. Helps the soil hold on to water. Feels smooth
Smallest soil particle. Fills up spaces in the soil, and holds on to water so tightly that plants can't use it. Feels sticky.
Water holding capacity
The amount of water held in the soil particles.
This soil horizon is an organic layer of partially decayed plant and animal debris on the top of the soil.
This soil horizon is the topsoil: where organic material accumulates, where animals live and where most plant growth happens
This soil horizon is the zone where most nutrients are leached from, light in color.
This soil horizon is full of clay and silt, and most chemicals and nutrients build up here.
This soil horizon is the deepest layer of the soil profile that is still considered to be a part of the soil--made up of broken up parent material
This soil horizon is the deepest: it's the underlying bedrock, such as limestone, sandstone, or granite
This primary nutrient is an important part of chlorophyll, it helps build proteins, and improves the quality of leaves and stems.
This primary nutrient helps the plant make and use energy, develop healthy roots, reproduce, mature, and resist stress.
This primary nutrient helps build proteins, improves quality of fruits, and helps the plant resists diseases.
This secondary nutrient is an essential part of cell wall structure. It helps the plant transport and retain other nutrients.
This secondary nutrient is a part of chlorophyll, and essential to photosynthesis: it activates growth
This secondary nutrient is essential for activity and development of enzymes and proteins. It helps plants make chlorophyll, as well as plant growth and cold tolerance
The measure of acidity or alkalinity in the soil. the pH level determines whether certain nutrients will be available to the plant.
The largest soil particle, clearly visible as small rocks in the soil
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