Nitrogen Nitrogen fertilizersfertilizers

Nitrogen fertilizersNitrogen fertilizers• Nitrogen is necessary for strong leaf

growth and good fruit set. Nitrogen is Nitrogen is a macro element, nutrients that a macro element, nutrients that plants require large amounts of. plants require large amounts of. Nitrogen is taken up by the soil in Nitrogen is taken up by the soil in from of nitrate ions. from of nitrate ions. Nitrogen fertilizer is a compound that Nitrogen fertilizer is a compound that is added to plants or lawns to is added to plants or lawns to stimulate growth. stimulate growth.

The nitrogen  The nitrogen  stimulates stimulates 

chloroplasts in chloroplasts in plants, which are plants, which are responsible for the responsible for the process of process of photosynthesis. photosynthesis. Plants that do not Plants that do not have have enough nitrogen will enough nitrogen will turn yellow and turn yellow and eventually perish eventually perish from a lack of food. from a lack of food.

Uses of nitrogen fertilizersUses 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 .

Quantity :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.

Comparison between a healthy and an unhealthy plant lacking nitrogen

A healthy plant Plant lacking nitrogen

Disadvantages Disadvantages

 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 .

Dead Fishes due to excess amount of nitrogen

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?