To eliminate cogongrass and prevent regrowth, the rhizomes must be destroyed. It has been shown that an integrated approach that combines burning, tillage (mechanical disturbance), and chemical applications provide the best solution for cogongrass management.
1 Force of magnetic field: the force exerted by a magnetic field. 2  Attraction of magnets for iron: the phenomenon of physical attraction for iron, inherent in magnets or induced by a moving electric charge or current. 3  A general term that refers to the effects originating from the electromagnetic interactions of particles.
Currently, physicists describe nature as having 4 fundamental forces: the Electromagnetic force, the Strong nuclear force, the Weak nuclear force, and the Gravitational force. At one point in history, the Electric and Magnetic fields were treated as separate. If you count these two fields as separate and add them to the other 3 traditional force fields -- the Gravitational, Strong, and Weak fields -- then, nature might be described as having a total of 5 fundamental fields in Physics.