The US box sets are released by CBS DVD (distributed by Paramount), while the Canadian box sets are released by Alliance Atlantis (distributed by Universal Studios). The first season DVD release differs from all subsequent seasons in that it is available only in 1.33:1 or 4:3 full frame, rather than the subsequent aspect ratio of 1.78:1 or 16:9 widescreen, which is the HDTV standard aspect ratio.
In Australian large-scale conservation cropping systems, where growing season rainfall generally limits crop yields, fallow phases are incorporated in rotations to conserve soil moisture for subsequent crops1,2. These phases provide an opportunity for improved weed and disease control3,4 and nutrient conservation5,6. To maximise stored soil moisture growers prioritise maintaining weed free fallows7, which frequently results in repeated applications of whole-field herbicide treatments to low density ( 2b1af7f3a8