a gardener pours superphosphate mineral fertilizer granules into his hand to be applied to the soil

agriculture care chemical cultivated cultivation enrichment farm farmer farming fertilize fertilizer fertilizers fertilizing garden gardener gardening gloves grain granular granulated granule granules greens ground grow growth hand hands heap hobby holding horticulture improving land mineral nature nitrate nitrogen nutrient phosphate phosphorus plant potassium pours soil spring sprinkle superphosphate