What are 5 of the factors to evaluate when land judging?
Determine proper use and treatment. Determine soil texture, permeability, depth, slope, surface runoff, erosion, and sink-swell. Determine if there is a flood hazard. Determine if drainage is a problem.
How do you determine erosion in land judging?
The fraction you make by putting current topsoil over original topsoil will determine which box you check on your land card. If the fraction is 3/4 or greater erosion is none-to-slight. If the fraction is between 1/4 and 3/4 erosion is moderate. If the fraction is less than 1/4 the erosion is severe.
How do you judge soil?
Texture is determined by taking a sample of soil (a ball about 1 inch in diameter), moistening it (if necessary), rubbing a small amount between the thumb and forefinger, and determining how it feels. The proper moisture content is important because it makes it easier to feel the mineral particles.
How many points is the homesite evaluation contest worth?
Points are awarded for each factor and practice. Each site (or soil pit) has a possible 112-point value. The cards are scored as follows: 36 points for Part I (4 points for each of the nine factors) and 76 points for Part II (20 points for foundations, 20 for lawns, 20 for septic systems, and 16 for lagoons).
How many Land Capability Classes are recognized in land judging?
eight recognized classes
Land Capability Classes The soil features of a particular area are all considered when determining the land capability class. There are eight recognized classes of land. They are divided into cultivated and non-cultivated.
Is clay smaller than silt?
Starting with the finest, clay particles are smaller than 0.002 mm in diameter. Some clay particles are so small that ordinary microscopes do not show them. Silt particles are from 0.002 to 0.05 mm in diameter. Sand ranges from 0.05 to 2.0 mm.
What is slope in land judging?
It is expressed as a percent, and is defined as the number of feet that the land rises or falls in a 100-foot horizontal distance. For example, a slope between two points which are 100 feet apart with a difference in elevation of 5 feet would have a 5% slope (Figure 3).
How many slope classifications are there within the land judging system?
These three are: coarse, medium and fine. SOil texture can be estimated by rubbing a moist sample of soil between the thumb and finger. Wet a sample of soil until it has the consistency of putty or modeling clay. Make a ball of the wetted soil about 1/2 to 3/4 inch in diameter.
Why is soil judging important?
Soil judging is the field component of soil science, a diverse discipline that combines geology, chemistry, physics, and biology. The study of soils helps us to better understand and protect the natural resource that sustains us all.
What is homesite evaluation?
Purpose. The purpose of the homesite judging contest is to increase awareness of the importance of our soil resources and educate students on the diversity of soils. The contest will introduce them to the basics of soil assessment and proper management for agricultural and urban land uses.
What are the 7 factors that determine land capability class land use?
Limitations that cannot be corrected may result from the effects of one or more of the following: (1) Erosion or erosion hazard, (2) severe climate, (3) wet soil, (4) stones, (5) low-moisture capacity, and (6) salinity or sodium.
What are the classes of land?
A Strata-based Land Classifications
| Land Classification | Subclass | Area (acres) |
|---|---|---|
| Noncommercial timber production | Isolated patches of forests | 9,908 |
| Crest Zone | 21,889 | |
| Travel-water influence | 53,324 | |
| Other conflicts | 52,350 |
What is slope soil?
Slope: Slope refers to the extent that a soil surface has an incline relative to the horizontal. In percentage terms, slope represents the elevation that occurs between two different points.
What is homesite evaluation in FFA?
The purpose of the homesite judging contest is to increase awareness of the importance of our soil resources and educate students on the diversity of soils. The contest will introduce them to the basics of soil assessment and proper management for agricultural and urban land uses.
What is a soil contest?
National Collegiate Soils Judging Contest Soil contestants arrive at various soil pits and are expected to correctly identify, evaluate, classify, and describe the four soil profiles. Learn more about our soil judging contest.
Which horizon is known as the zone of accumulation?
The E horizon is not present in all soil profiles and can be found on sites with a high temporary water table or forest soils. The B horizon, or subsoil, is referred to as the zone of accumulation due to buildup of minerals leached out of the A and E horizons.