UVU is very different from most universities as we do not teach from a textbook. Most instructors have a PhD in engineering and 20-40 years of experience. Course content is developed from scratch and is based on the instructorâs experience. The textbook serves as a reference and some reading assignments are made.
Deionization (DI Water or Demineralization) simply means the removal of ions. Ions are electrically charged atoms or molecules found in water that have either a net negative or positive charge.
Urea is decomposed by the enzyme urease or chemically hydrolyzed into ammonia and CO 2. In the ammonification step, ammonia is converted by ammonium-oxidizing bacteria into ammonium. In a next step, ammonium is converted by nitrifying bacteria into nitrate (nitrification).The nitrogen conversion rate depends on the conditions, present in the soil for nitrifying bacteria. Nitrates can be readily absorbed by the plant and do not need to undergo any further conversion, as is the case with urea and ammonium, before plant uptake. 2  No acidification of the soil if all the nitrogen is applied as nitrate-nitrogen.