Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
sarcŭlo, āvi, ātum, 1, v. a. [sarculum], to hoe: frumenta, segetes, etc., Pall. Jan. 9, 1; id. Oct. 11, 2: nata in hortis sarculatis, Prud. στεφ. 10, 264.