rikkimaara
Rikkimaara is a term used in Finnish agronomy and weed management to describe a threshold level of weed infestation that justifies taking control actions in a crop stand. The word combines rikk(i) meaning weed and maara meaning amount or threshold, and in practice it is linked to decisions about when to apply control measures such as mechanical weeding or herbicides. The concept appears in Finnish agricultural literature and extension materials as part of decision-support for integrated weed management.
Definition and scope vary by source and agricultural context. In general, rikkimaara refers to a density or
Applications and implications also differ regionally. The concept aims to optimize control efforts, reduce unnecessary herbicide
See also: economic threshold, weed management, integrated pest management.