acetify
acidify
acidulate
alkalify
alkalize
ammonia
borate
carbonate
castor-bean meal
catalyze
chemical
chlorinate
commercial fertilizer
compost
dressing
dung
electrolyze
enrichener
ferment
fertilizer
guano
homopolymerize
hydrate
hydrogenate
hydroxylate
isomerize
manure
muck
night soil
nitrogen
organic fertilizer
oxidize
pepsinate
peroxidize
phosphate
phosphatize
polymerize
reduce
sulfate
sulfatize
sulfonate
superphosphate
work
process
treat
nitrated
nitrates
nitrating
nitration
acetate
bicarbonate
bromide
chloride
chlorine
iodide
lime
oxalate
oxide
phosphorus
potassium
salt
sulphide
zinc