Cov poov tshuaj sulphate fertilier yog qhov tshwj xeeb tshaj yog rau cov nyiaj cog qoob loo uas tiv taus cov tshuaj chlorine thiab nyiam potassium, xws li haus luam yeeb, txiv quav ntswv nyoos, beet, tshuaj yej, qos yaj ywm, flax thiab ntau yam txiv ntoo.
