She can, but only if the position is genuinely a soil science position. Meeting the Soil Scientist degree requirement settles the applicant; it says nothing about the job. A role built around a sales quota with technical support attached fails the professional-position test even when the person hired is unquestionably qualified.
Qualified applicant, unqualified position, same refusal
Adjudication runs two findings in sequence. The first asks whether Sylvie holds what the Soil Scientist entry demands, and a degree in agricultural science with soil specialization answers it. The second asks whether the American company needs a soil scientist for this position and whether the work she will perform is that profession.
Employers in input supply routinely blend the two, because a scientist who can also open accounts is commercially attractive, and the resulting job description drifts. The practical fix is arithmetic rather than rhetoric: put the activities in a list, attach an honest share of the working week to each, and see whether interpretation, diagnosis and recommendation dominate. Should they not, the choice is to renegotiate the role or to look at a classification built for commercial work.
Rewriting the same job in more scientific language is the one response that reliably produces a refusal.