| dc.description | The topic is environmental nitrogen to be used for the fertilizing crops. In 1972, with the increased interest in all the
ecological aspects of the mobile components of the environment, it was necessary to understand the complete dynamics of elements such as nitrogen. To achieve this one must consider their cycling in terms of all the sources of input into the system, the various points at which there may be losses, and the energy levels at which these inputs and losses occur. The inputs and the withdrawals from the various
nitrogenous pools in the environment have been estimated with considerable accuracy by numerous techniques. As a result of research projects, we have a general picture of the major mechanisms by which the different forms of nitrogen are transformed from one to another. The article has an illustration of the nitrogen cyclization cycle. Analyses of nitrate reduction
and assimilation have been performed on young seedlings of a number of weeds and crops to indicate their overall capacity to reduce and assimilate nitrogen under various field conditions. Weeds can tie up nitrogen in the soil for that year's crop production. It is important to restore and to maintain the natural cyclization of nitrogen in order to maintain a healthy, balanced environment. | |
