2. NitrogeN fertilizers
• Nitrogen is necessary for strong leaf growth
and good fruit set. Nitrogen is a macro
element, nutrients that plants require large
amounts of. Nitrogen is taken up by the
soil in from of nitrate ions.
Nitrogen fertilizer is a compound that is
added to plants or lawns to stimulate
growth.
3. The nitrogen stimulates
chloroplasts in plants,
which are responsible for
the process of
photosynthesis. Plants
that do not have
enough nitrogen will
turn yellow and
eventually perish from a
lack of food.
4. Uses of NitrogeN
fertilizers
• Nitrogen fertilizers enable farmers to achieve the
high yields that drive modern agriculture. Fertilizers
are effective in driving crop yield improvements .
Without nitrogen, green plants are weak and
smaller than they should be .
5. QUaNtity :
• If it is lacking, plants will be pale
and sickly-looking, and the oldest
leaves will look worse than the
newer ones. Too much nitrogen can
cause plants to put all of their
energy into developing greenery, and
they will fail to bloom or produce
fruit.
6. Comparison between a healthy and
an unhealthy plant lacking nitrogen
A healthy plant Plant lacking nitrogen
7. DisaDvaNtag
es
The extra nitrogen fertilizer
supplied, leaches into the
air, soil and water and
pollutes lakes, rivers,
aquifers and oceans.
When the nitrogen fertilizers
goes in the lakes, rivers,
oceans many plants start
growing which cause the
oxygen level to decrease in
water and marine life will
be highly affected by this .
9. QUestioNs
• The lack of nitrogen leads to?
• Overuse of nitrogen fertilizers?
• How will extra nitrogen cause problems to marine
life?
• Why is nitrogen not taken from the air?
• How is nitrogen taken up by the plants and in
which form?
• What do you mean by macro element?
• Is nitrogen a macro element and what do you
mean by that?
