Abstract: There is provided a method to overcome or decrease the antagonistic interaction caused by the application of an acetohydroxyacid synthase-inhibiting herbicide in combination with a non-acetohydroxyacid synthase-inhibiting herbicide such as dicamba, 2,4-D, bromoxynil, atrazine or bentazone, which comprises applying an effective amount of imazapyr (2-(4-isopropyl-4-methyl-5-oxo-2-imidazolin-2-yl)nicotinic acid).

Abstract: To record a composite picture on a film, a projection objective inserted between a movable transparency support and a pair of large-diameter planoconvex field lenses produces an aerial image of a slide, mounted on the support, in the region of the field lenses, preferably just beyond the more rearwardly positioned field lens. A varifocal objective disposed to the rear of the field lenses has a stationary front component with a natural entrance pupil fully illuminated by the diverging light cones from all the points of the aerial image, this varifocal objective forming part of a zoom camera enabling the magnification ratio between the slide and its image on the camera film to be varied in a range of at least 6:1.