Diquat imagwiritsidwa ntchito ngati njira yolumikizirana ndikupha bioherbicide.Itha kutengeka msanga ndi minyewa yobiriwira ya zomera ndipo imasiya kugwira ntchito itangokhudza nthaka.Amagwiritsidwa ntchito popalira m'minda, m'minda ya zipatso, m'minda yosalimidwa, komanso musanakolole.Itha kugwiritsidwanso ntchito ngati Zimayambira ndi masamba a mbatata ndi mbatata zimafota.M'malo omwe udzu wa gramineous ndi wovuta, ndi bwino kugwiritsa ntchito paraquat pamodzi.