Definitions
the small-scale climate conditions within a localized area that can differ significantly from the surrounding regional climate
micro climate
What % of the world's land is currently desertifying?
a. 1/3
b. 2/3
c. 1/2
B. 2/3
What type of soil has the finest particle size, slow drainage, poor aeration, and is easily compacted?
Clay
Soil __ is a measure of how acidic or alkaline the soil is
What is the water holding capacity of sandy soils?
a. high
b. medium
c. low
C. Low
A modern farming method that relies on large-scale production, chemical fertilizers, and pesticides to maximize crop yields
Industrial Agriculture
What historical event is mentioned as a significant example of soil erosion?
The Dust Bowl
Water content after drainage:
a. gravitational water
b. field capacity
c. permanent wilting point
b. Field capacity
What is the ideal pH range for most plants?
6.0-7.0
How did the video suggest we improve our agriculture practices?
a. farm more naturally
b. increase fertilizer use
c. reduce crop diversity
A. farm more naturally
Gases such as carbon dioxide, methane, and nitrous oxide that trap heat in the atmosphere, contributing to the greenhouse effect and global warming
Greenhouse Gases
What nutrient do plants provide to soil microbes?
Carbon
what are the 3 soil textures?
Sand, Silt, and Clay
What is the term for the total amount of pore space in soil?
Porosity
What management practice involves planting non-cash crops to prevent soil erosion and increase soil health?
Cover Crops
refers to the diverse community of microorganisms living in the soil, including bacteria, fungi, archaea, protozoa, and viruses
Soil microbiome
What is the number one role soil plays in combating climate change?
Carbon Sequestration
what are the 4 main soil components?
water, air, minerals, organic matter
Which nutrient is most commonly deficient in soils worldwide?
Nitrogen
what is the top layer of the soil primarily made of?
organic matter
The process of capturing and storing atmospheric carbon dioxide in plants, soils, and other carbon sinks to help mitigate climate change
Carbon Sequestration
What chemical is mentioned as being harmful and commonly found in ag practices?
Glyphosate (round up)
What are the 5 soil forming factors?
climate, organisms, parent material, topography, and time
Which soil horizon is typically the most fertile?
O horizon (topsoil layer)
What type of soil mixture is a loamy soil?
a. even mixture of sand, silt, and clay
b. half sand and half silt
c. half silt and half clay
A. even mixture