Green gram cultivation can have an impact on the available nitrogen content in the soil. According to a source on climate policy, an increase in available N can occur due to changes in land-use and/or management practices that mineralize soil organic N. Green gram is a legume that is known to fix atmospheric nitrogen through a symbiotic relationship with nitrogen-fixing bacteria, which can lead to increased soil N levels. Additionally, green gram cultivation can also increase the organic matter content of soil through the addition of crop residues, which can increase N mineralization rates and subsequent N availability.
It is important to note that excess N can have negative environmental impacts, as it can lead to increased nitrous oxide (N2O) emissions and contribute to eutrophication in aquatic ecosystems. Therefore, it is important to carefully manage N inputs in agricultural systems to minimize negative environmental impacts while maintaining soil fertility.
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