Yes if the professional agronomy work is the substance of the position and sales are incidental to it. If the position is a sales territory with agronomic advice as a tool, it is not a listed profession and TN does not fit.
The substance of the position decides, not the proportion of paragraphs
Agriculturist, including Agronomist, is on the TN list and requires a baccalaureate degree. The category covers professional agronomic work, and an officer will accept that advising growers on seed selection, trials and soil management is that work even when it leads to sales. What the category does not cover is a job whose purpose is meeting a sales quota.
The record that decides this is the employer's offer letter, read together with the job posting and any commission plan. If those documents show a professional whose recommendations sometimes result in orders, TN is available. If they show a territory representative with targets, the honest answer is that a different route is needed, and no rewording of the letter changes that.
Employers sometimes offer to describe the job differently; a letter that does not match the job is a misrepresentation risk for both parties and should be declined.