Plants and Nitrogen Cycle

The Nitrogen Cycle is the process by which nitrogen is converted into different forms in the environment, making it available for plants to use. This process involves various steps such as nitrogen fixation, ammonification, nitrification, and denitrification.

1. Nitrogen Fixation

Nitrogen fixation is the process by which atmospheric nitrogen is converted into a usable form by certain bacteria, such as Rhizobium. These bacteria are found in the root nodules of leguminous plants like peas, beans, and clover. The bacteria convert atmospheric nitrogen into ammonia, which is then used by the plant.

2. Ammonification

Ammonification is the process by which organic nitrogen from dead plants and animals is converted into ammonia by decomposing bacteria. This ammonia is then used by plants as a source of nitrogen.

3. Nitrification

Nitrification is the process by which ammonia is converted into nitrite and then into nitrate by nitrifying bacteria. Nitrate is an important form of nitrogen that is taken up by plants through their roots.

4. Denitrification

Denitrification is the process by which nitrate is converted back into atmospheric nitrogen by denitrifying bacteria. This process occurs in soils that are low in oxygen, such as waterlogged soils.

How Plants Take Nitrogen

Plants take up nitrogen in the form of nitrate through their roots. Nitrate is then transported from the roots to the rest of the plant through the xylem tissue. Nitrogen is a vital nutrient for plants, and it is used in the formation of proteins, chlorophyll, and other essential compounds.

In conclusion, the nitrogen cycle is a complex process that involves various steps, including nitrogen fixation, ammonification, nitrification, and denitrification. Plants take up nitrogen in the form of nitrate through their roots and use it to produce essential compounds. Understanding the nitrogen cycle is important for farmers and gardeners, as it helps them to manage soil fertility and ensure that their plants have access to adequate nutrients.

Plants get their nitrogen from the the soil not directly from the air.... from here, various micro organisms convert ammonia to other nitrogen compounds that are easier for plants to use , in this way plants get their nitrogen indirectly from the air viamicro organismorganisms in the soil and in certain plants roots.