Exam 2 Flashcards
(46 cards)
Formula for neutralizing power of agricultural lime (Calcium carbonate)?
CCE x Fineness x Dryness
What soil texture holds water the best?
Clay
What type of soils have more organic matter buildup?
Wet and cold
What does a decreasing pH do?
It increases hydrogen and decrease hydroxide
What is pH resistance?
Buffering
What farm animal produces the most nitrogen?
Poultry
What climates tend to have more acidic soils?
Hot and wet
What does dolomite contain?
Magnesium and calcium
What does agricultural lime contain and do?
It raises pH and contains calcium
When is soil buffering more likely?
When large amounts of clay is present
What rate should biosolids be applied?
It should be applied at the same time that nitrogen fertilizer is applied
What is the definition for the biogeochemical pathway?
Molecules move through both abiotic and biotic compartments of the earth
What is leaching?
Movement of water out of soil, taking nutrients with it
What is preferential flow?
Non-uniform flow of water through soil
What are the 17 essential elements?
Nitrogen
Phosphorus
Potassium
Calcium
Magnesium
Sulfur
Boron
Chlorine
Copper
Iron
Nickel
Zinc
Manganese
Molybdenum
Carbon
Oxygen
Hydrogen
Essential elements from atmosphere?
Carbon
Oxygen
Hydrogen
What is transpiration?
Evaporation through leaves
What is percolation?
The movement of water through the soil profile
How does water move?
From high to low potential
What is the ‘green’ element?
Nitrogen
What is calcium necessary for?
Cell wall structure
What is nitrogen necessary for?
Leaf and stem growth
What is phosphorus necessary for?
Energy
What is potassium necessary for?
Osmosis regulation
