gray-haired agronomist or farmer in red shirt measuring and examining young corn plant stem

active adults agricultural agriculture agronomist analyzing beard cereal color conservation contemplation corn corncrop crop cultivated drink engineer environmental examining experiment farm farmer field food freshness genetic grayhaired green growth harvesting holding industry landscape leaf lifestyle looking man measuring modification nature occupation one only organic outdoors part person plant red research root rural scene scientific season senior seniors shirt solution soybean springtime stem summer sustainable technology waist worker writing young