Fertilizers Flashcards
1
Q
Why is Nitrogen the most important aspect of turf fertility?
A
It determines growth
2
Q
Most tufr plant tissues have a NPK ratio of what?
A
3:1:2
NPK
3
Q
What are the two forms of plant available nitrogen?
A
- No3
- NH4
4
Q
what is NO3?
A
Nitrate
5
Q
What is NH4 ?
A
Ammonium
6
Q
NO3- is very water soluble….what is it prone to do?
A
Leach
7
Q
N mineralization is the converstion of ______ to _____?
A
N to NH4
8
Q
N fixation is the converstion of ____ to ______.
A
n2 gas to other forms of N
9
Q
Nitrification is the conversion of ____ to ______.
A
NH4 to NO3
10
Q
grass takes up nitrogen what in 3 different forms:
A
- Ammonium
- Nitrate
- Urea
11
Q
What are carbohydrate reserves used for?
A
survival in dormancy and stress periods
12
Q
What happens to plant carbohydrates at high N levels?
A
The plant uses them as energy to produce shoots and the roots are depleted
13
Q
A
