“…(Kondra 1975, l9l7). Clarke and Simpson (1978) and Clarke et al (1978) suggested that higher yields could be achieved with increased rates of seeding, whereas studies conducted by Christensen and Drabble (1984) and Degenhardt and Kondra (1981) indicated seeding rates had no significant effect on yields. Crop heights were reduced with the two greatest seeding depths compared with the two shallowest depths (Table 2).…”