Agricultural :: Agricultural (a.) Of or pertaining to agriculture; connected with, or engaged in, tillage; as, the agricultural class; agricultural implements, wages, etc..
Agriculturalist :: Agriculturalist (n.) An agriculturist (which is the preferred form..
Agriculture :: Agriculture (n.) The art or science of cultivating the ground, including the harvesting of crops, and the rearing and management of live stock; tillage; husbandry; farming..