Abstract: A vegetation cutter intended to mechanically separate vegetation, such as control of e.g. control weeds and/or other undesired crops or vegetation from desired crops or vegetation on a land surface.

Abstract: An agricultural seeder or fertilizer having a meter device which dispenses seed or fertilizer to a plurality of ground-engaging members. The supply of metered seed or fertilizer to each of the ground-engaging members is controlled via input from a GPS/GNSS satellite navigation system to prevent the meter device delivering seed or fertilizer to selected of the ground-engaging members which would otherwise pass over soil which has been previously seeded or fertilized. Raising means, responsive to input from said GPS/GNSS satellite navigation system detecting that the device is travelling or is about to travel over areas of soil that has been previously seeded or fertilized, is further is provided to raise the selected ground-engaging members to which delivery of seed/fertilizer has been prevented in order to prevent soil which has been previously seeded or fertilized from being disturbed. A method of operating a seeder/fertilizer implement to achieve the aforesaid is further disclosed.

Abstract: A sit-up exercise apparatus having a structure that can be secured to the bottom of a door which comprises, means for restraining feet of an exerciser when performing a sit-up exercise, support means for supporting the foot restraining means at a height above the base of the structure, and screw means for releasably but rigidly securing the foot restraining means to the support means. The support means is substantially an elongated plate member extending from the structure and having, one end thereof downwardly extending to releasably but rigidly be affixed to the structure and another end thereof successively bent into a form resembling stair steps which accomplish height adjustment of the foot restraining means so as to accomodate different size feet.