Excessive fertilization and manure application to cropland, as well as high livestock stocking densities cause nutrient (mainly nitrogen and phosphorus) runoff and leaching from agricultural land.
ɛksˈɛsɪv fˌɜːɾɪlᵻzˈeɪʃən ænd mənjˈʊɹ ˌæplɪkˈeɪʃən tə kɹˈɑːplənd, æz wˈɛl æz hˈaɪ lˈaɪvstɑːk stˈɑːkɪŋ dˈɛnsᵻɾiz kˈɔːz njˈuːtɹiənt mˈeɪnli nˈaɪtɹədʒən ænd fˈɑːsfoːɹəs ɹˈʌnɔf ænd lˈiːtʃɪŋ fɹʌm ˌæɡɹɪkˈʌltʃɚɹəl lˈænd.