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Unformatted text preview: York State, approximately 60—80 lbs of N
per acre is mineralized on average from soil
organic matter each year.
microorganisms convert ammonium to nitrate to
obtain energy. Nitrate is the most plant available
form of N, but is also highly susceptible to leaching
ammonium NO2nitrite NO3nitrate Nitrification is most rapid when soil is warm (6786°F), moist and well-aerated, but is virtually
halted below 41°F and above 122°F.
Department of Crop and Soil Sciences 1 College of Agriculture and Life Sciences high N inputs (especially outside of the growing
season) and high rainfall are all conditions that
increase the potential for nitrate leaching. Denitrification occurs when N is lost through the
conversion of nitrate to gaseous forms of N, such as
nitric oxide, nitrous oxide and dinitrogen gas. This...
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This note was uploaded on 10/12/2012 for the course BIOTECH BT101 taught by Professor Gardy during the Spring '12 term at Indian Institute of Technology, Chennai.
- Spring '12