Corn plant weeds can be very diverse. In medium field, Amaranthus retroflexus, Gallium aparine and Polygonum aviculare are common weeds in corn fields. Also, wheat residues that remain and are mainly among the sources of weeds can also cause problems in the corn field. Chemical or agricultural methods can be used to control these weeds. For example, they can be controlled by creating a suitable mixed soil until the time of planting corn and picking grasses before planting or using chemical herbicides. Finally, it is worth mentioning that all these weeds can be controlled by a creative farmer with various methods.