Land Judging
What is the point of Land Judging?
To determine what the soil should be used for.
What are classes 1-4 used for?
Farming/ Crops
What are the three types of soil particles?
Sand, Silt, Clay
What three nutrients do we apply in our fertility treatments?
Nitrogen, Phosphorus, and Potassium
What is the side view or vertical cross-section of the soil that allows the topsoil and subsoil can be examined?
What is the Soil Profile?
100 ft
What vegetative treatments should all classes 1-4 have?
What is: # 5 Return crop residue to soil, and
# 6 Practice conservation tillage
What are the 5 texture groups?
Fine, Moderately Fine, Medium, Moderately Coarse, Coarse
What nutrient can we NOT over apply?
What is Nitrogen?
The wearing away of the land surface by wind, water, ice or other geologic agents.
Erosion
What method (name) do we use to determine the soil texture & then explain how you do it?
What is Ribboning; you pinch the soil between your thumb and pointer finger to see how long of a ribbon you can create.
Name two limitations that make Class V land unsuitable for cultivation? These will be given in "other factors".
What are very poor surface and internal drainage or frequent flooding.
The soil texture /particle that feels sticky and like plastic, which soil particle is it?
What is Clay ?
What are the minimum Potassium and Phosphorus levels needed for a field score to be determined "adequate"?
What are 300 lbs/acre of potassium and 60 lbs/acre of phosphorus?
The 2 soil horizon layers we are most concerned with during the competition.
What are Horizon level A -top soil, and Horizon level B - subsoil?
Calculate the Erosion:
Original Top Soil: 10 inches
Current Top Soil: 5 inches
5/10: .50 or 50%
Name two Soil Factors that move the land use automatically into Class VI.
What are slope and erosion ?
What is a soil texture group that is "about" equally influenced by sand, silt, and clay?
What are Loamy soils.
What is the pH range for determining if we need soil amendments?
What is pH range of 6.3 - 8.
What is the solid rock that underlies the soil and other unconsolidated material, or that is exposed at the Earth's surface?
What is Bedrock or Parent material?
Calculate the Erosion:
Original Top Soil: 9 inches
Current Top Soil: 6 inches
What is 3/9 or .33 or 33% erosion?
Class VI land is generally limited to pasture, woodland, or wildlife food and cover. What vegetative checks are marked for class VI land?
What are 7, 8, 9 and 10?
You create a ribbon that is about one inch long and breaks easily if it is shaken. What soil texture is it?
Medium
If you have soil test levels of pH 6.4, 50P, 185K and adequate Nitrogen and you will be growing corn. What fertilizers and soil amendments are needed?
What are Phosphorus and Potassium.
Name three of the ways the soil horizon layers differ?
What is color, physical properties, chemical properties and biological characteristics?