There are plenty of synonyms that can be used to replace the term "low TN", which refers to low total nitrogen levels. Some alternatives include "minimal TN", "depleted TN", "scant TN", "insufficient TN" or "lower-than-average TN". These synonyms can effectively convey the same meaning in various contexts, allowing researchers, scientists, or individuals discussing environmental or agricultural topics to diversify their vocabulary. By utilizing these alternative terms, one can enhance their writing or conversation, preventing excessive repetition while maintaining clarity and precision. Ultimately, expanding one's lexicon enables efficient communication while discussing low total nitrogen levels.