Chlorothalonil (2,4,5,6-tetrachloroisophthalonitrile) yog ib qho organic compound feem ntau yog siv los ua ib qho dav dav, nonsystemic fungicide, nrog rau lwm yam siv los ua ntoo tiv thaiv, tshuaj tua kab, acaricide, thiab tswj pwm, mildew, kab mob, algae. Nws yog ib qho kev tiv thaiv fungicide, thiab nws tawm tsam cov paj hlwb ntawm kab thiab mites, ua rau tuag tes tuag taw hauv ib teev. Tus tuag tes tuag taw tsis tuaj yeem thim rov qab.