each row unit 32 includes a row unit sensor 76 in other exemplary embodiments each row unit 32 may include any number of row unit sensors 76 see fig5 returning to the illustrated embodiment the sensors 76 are capable of sensing a wide variety of soil and seed characteristics such as for example soil temperature soil moisture seed presence seed temperature etc in some exemplary embodiments the sensors 76 on the various row units 32 may sense the same characteristic in other exemplary embodiments the sensors 76 on the various row units 32 may sense different characteristics the sensors 76 may require electrical power to operate and such electrical power may originate from a variety of different sources in some exemplary embodiments the sensors 76 may be electrically powered by the planter electrical power source 68 in other exemplary embodiments the sensors 76 may be electrically powered by the tractor electrical power source 60 the above described electrical power sources 60 68 may be a wide variety of types of electrical power sources and all of such various electrical power sources are intended to be within the intended spirit and scope of the present invention for example an electrical power source may comprise any one of the following an alternator coupled with a hydraulic motor an alternator coupled mechanically to an engine of the tractor an alternator coupled with a ground drive an alternator coupled with an electric motor a battery pack or any other appropriate electrical source while the system 20 is utilized during the planting process dust dirt and other debris may become airborne due to the turbulence created by.