For the nitrogen in the oat straw in question 15 describe the 5 steps that the nitrogen would go through before the N would be released back to the atmosphere as N2 gas. Describe the measures needed to halt the decline and in fact reverse the trend. 1. will allow water to percolate faster through the soil. 2. will increase the amount of oxygen passing through the soil to the roots. 4. needs the addition of sand and organic matter to increase the pore space.
Bulk density describes the soils weight to volume ratio.
Moisture regimes are used to place soils in suborders and great groups. Aquic, Udic, Ustic, Aridic 2. Udic, Ustic, Xeric, Aridic 3. Aquic, Ustic, Aridic, Udic 4. Boric, Udic, Ustic, Aridic 4.