collage with photos of farmers holding ammonium nitrate pellets on white background, closeup. mineral fertilizer

adult agrarian agriculture agrochemical ammonium application background calcium carbamide care cation chemical closeup collage compound concept cultivate cultivation different environment environmental farmers farming fertilizer fertilizing grains granules group hands holding horticulture isolated male man many mineral natural nitrate nitrates nitrogen nutrient organic pellets people photos plant salt sulfate urea white