Feem ntau yog siv rau cov nplej, pob kws, nplej thiab lwm yam qoob loo, nrog rau cov ntoo txiv ntoo, zaub thiab paj thiab lwm cov qoob loo uas xav tau cov khoom noj khoom haus mus sij hawm ntev. Compound fertilizer yog ib hom chiv uas muaj nitrogen, phosphorus, poov tshuaj thiab lwm yam khoom noj hauv kev faib ua feem. Nws muaj qhov zoo ntawm cov khoom noj muaj txiaj ntsig zoo, ob peb los ntawm cov khoom siv thiab cov khoom siv lub cev zoo, uas tuaj yeem ua tau raws li cov kev xav tau ntawm cov qoob loo loj hlob thiab txhawb cov qoob loo siab thiab ruaj khov.