Unit 3 APES Studying

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Last updated: October 26, 2025

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Hint	Answer
The ideal ratio of soil	LOAM
__% Clay	20
__% Silt	40
__% Sand	40
The biggest thing in soil	Sand
The mediumist thing in soil	Silt
The smallest thing in soil	Clay
Crop that depletes nitrogen from the soil	Corn
Crops that restores nitrogen into the soil	Legumes
Three nutrient elements	Nitrogen, Potassium, Phosphorus
Dead organic material found on the top of soil. Nutrients are released slowly during decomposition.	Humus
Soil is 45% _____	Elements
Soil is 5% ______	Organic matter
The other two components of soil that fluctuate	Air and water

Hint	Answer
When minerals get removed from soil	Leaching
When the soil gets very saturated with water	Waterlogging
The space in between the soil particles	Pore space
(Big/small?) particles have greaster pore space	Big
Total amount of pore space	Porosity
Clay has (most/least?) porosity	Most
The amount of water a type of soil can hold	Water holding capacity
What type of soil needs more irrigation?	Sandy
The ability of water/other stuff to percolate	Permeability
Greater pore space = (greater/less?) permeability	Less
Heavy equipment and overgrazing cause problems to?	Permeability
Compaction of soil due to above?	Cattlepaths
Cattlepaths cause ______	Erosion
When holes are poked into the ground, helps with compaction	Aeration

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