agricultural lime
agriculture
ammonia
ammonium tetraoxosulfate
background
balls
blue
calcium
chemical
cultivated
dap
diammonium phosphate
farming
fertile
fertilizer
garden
gardening
grain
green
growth
industrial
industry
lime
liming
magnesium
material
natural
nitrate
nitrogen
npk
nutrients
orange
output
phosphate
phosphorus
pile
pill
plant
potash
potassium
rating
red
seed
sodium
sulfur
urea