Note the various forms of N
-:- 1. Ammonium (NH4+) cation in the soil solution and fixed in secondary clays
2. Nitrate (NO3-) anion in the soil solution
3. Organic N in the soil
4. Ammonia (NH3) gas (released to atmosphere)
5. NO, N2O, N2 gases (released to atmosphere)
anion- nitrogen
-:- ...
NH4 and NO3 in soil solution constitute about 1% of N in the soil. Again most of the N in
soils is in organic forms.
Due to rapid nitrification in soils, plants absorb predominately NO3.
Some plants prefer N in the NH4 form for example rice. Other plans that grow under acidic
conditions seem to prefer NH4 too.
ATP
✓ -:- adenosine triphosphate (drives most energy-requiring biochemical processes ex
uptake of nutrient)
3|Page | Grade A+| 2024/2025
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller TestTrackers. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
