This beneficial fungus enhances plant roots and aids in nutrient uptake.
What is mycorrhizae?
Most toxic chemicals in soil come from these 2 sources.
What is industrial waste and pesticide use?
Certified organic livestock must always have access to _______________________.
What is the outdoors and a grazing pasture?
Soil testing should be done at this depth for farms and gardens.
What is 6 in to 8 in?
Soil is composed of these 3 mineral textures.
What is sand, silt, and clay?
This is the biggest challenge farmers face when transitioning from conventional to organic farming.
What is pest control?
This % of waste generated worldwide is organic in nature.
What is 70%?
This type of landfill relies on soil to filter water that infiltrates it.
This type of landfill relies on soil to filter water that infiltrates it.
This is 1 environmental concern associated with landfills.
What is water pollution,
unstable land due to "settling" of compostable materials,
or contribution to greenhouse gases?
These large channels are formed by rapid water erosion and can damage entire landscapes.
What are gullies / gully?
Soil erosion is the movement of soil particles by these 3 factors.
What is water, wind, or tillage?
This is how often farmers and gardeners should test their soil.
What is every 3-5 years?
This is one reason temperatures in urban areas are higher than temperatures in rural areas.
What is increased pavement, decreased vegetation, decreased water supply in soil?
These 2 essential plant nutrients are only available to plants for a short period of time when applied to the soil.
What is Phosphorus (P) and Potassium (K)?
These are the 3 steps in soil erosion by wind or water.
What is
1. Detachment of soil particles.
2. Transportation of detached soil particles.
3. Deposit of transported soil particles.
?
These 2 common practices help reduce the amount of waste that reaches landfills.
What is recycling and composting?
This is one characteristic of urban soils.
What is compaction, highly contrasting soil layers, and contamination?
This is one environmental impact of Nitrogen or Phosphorus overfertilization.
What is eutrophication or dead zones / loss of aquatic life?
This is about how long it takes for a landfill to reach capacity.
What is 30 - 40 years?
This is the purpose of a buffer zone or riparian area near urban waterways.
What is reducing contamination + sediment deposit in urban rivers and streams?
In the U.S., most of the soil erosion takes place in these areas.
What is crop land, construction sites, desert regions, and cleared forests?
These types of plants are typically used in rain gardens.
What are native grasses, perennials, and deep rooted plants?
These are the 6 roles of soil.
What is
1. Support plant growth
2. Regulate water supplies
3. Modify the atmosphere
4. Recycle waste/OM
5. Habitat for organisms
6. Engineering medium
This type of tillage reduces erosion, improves OM content, increases soil biodiversity, and leaves crop residues on the soil surface.
What is conservation tillage?
These soil colors indicate good airflow.
What is red / yellow / orange?