State Folk Song. State Fossil. State Fruit. State Furbearer Animal. State Game Animal. State Game Bird. State Gospel Song. State Grass. State Insect. State Meal. State Monument. State Motto. State Musical Instrument. State Name Origin. State Nickname. Whether you live in Noble, Norman, Yukon, Shawnee or Stillwater you likely have also had to try and clean the enduring stains out of your carpets. The color in the soil is caused by the breakdown of the rock or strata beneath the topsoil layers.
Oxidation from water or air can create a breakdown effect we are use to seeing on an old chain or a corroded water pipe. The soil beneath our PORT soil is the clay rich strata that breaks down through weatherization, heat, compression and it is full of iron. Using an aerator decreases compaction and can help increase air and water flow. To dig in and learn more about your soil check out the Improving Soil Quality Leaflet.
Adding organic matter effectively improves soil quality. It can be incorporated into the soil or spread on the soil surface. Organic matter supplies plant nutrients, improves soil structure and aeration and increases water and nutrient holding capacity, as well as decomposition. Types of organic matter include:. That is not the case in places where the soil has little or no plant cover. The Grand Canyon is a very familiar example of erosion by water.
Most of the erosion there was the work of nature rather than humans. In that part of the country the hot, dry climate makes it difficult for plants to grow. The soil is sandy. Sand particles don't stick together very well, so they wash away easily. The land around the Grand Canyon slopes into the Colorado river, and that also makes erosion more likely.
Heavy rains cause soils to erode away in many parts of Oklahoma where the land slopes and the soil is unprotected. Windy conditions, sandy soils and sparse vegetation are the cause of the erosion there.
Keeping soil healthy is very important to farmers. For that reason, careful farmers do their best to protect their soil. The best way for farmers to do this is to keep their fields covered with vegetation at all times. Plant cover provides a cushion against the beating force of the rain and also slows the wind at the soil's surface.
Some farmers protect their soil by leaving stubble or residue in their fields after they have harvested their crops. Other farmers plant their fields with grass or cover crops during seasons when they are not growing their main crop.
Alfalfa, clover and field peas send roots deep into the soil and help hold it in place. Those crops also fix nitrogen from the air and make it available to the soil. When it is time to plant, the farmer will turn the stubble or cover crops under to add extra organic matter to the soil.
The organic matter, in turn, helps the soil hold together and soak up moisture rather than wash away. Soil Science "The nation that destroys its soil destroys itself. Roosevelt Good Earth, lithograph, by Olinka Hrdy. Background and Vocabulary. Students conduct experiments with soil, explore the different colors and textures found in the soil and use soils of different colors to create art.
Dirty Pictures Kahoot! Students will learn about the distribution of agricultural land through a demonstration with an apple representing the earth. Students will discuss the impacts of land development. Students will make land use decisions for a variety of situations and justify their decisions. Students will answer questions from a chart showing land use and ecosystem types in select countries from different regions.
Students will create a worm habitat and keep a journal to monitor changes. They will observe the worms and measure them. Students will learn about the layers of soil and use various materials for building models of soil profiles. Students will experiment with growing beans in various layers of soil. Students will conduct experiments to demonstrate soil compaction.
Students will experiment with the extraction of mineral.
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