Grains Research and Development

Date: 01.11.2002

New findings on weed management in sorghum

Early results from Central Queensland, under the GRDC-supported farming systems project, indicate that crop populations, row configuration and variety choice all have a role to play in weed management in sorghum. Researchers Glen Wright and Vicki Osten say sorghum sown at high rates - 90,000 plants per.hectare - in unsprayed situations illustrated the crop's ability to compete with weeds, as did solid plant configuration (75 cm rows). Wide and double_skip planting provided more bare areas for weeds to flourish.

The fast crop growth habit of the quicker-maturing variety 86G87 "crowded out" weeds. The researchers say manipulating crop population and row spacing and choosing competitive varieties provide complementary and/or alternative weed management options giving growers a break from complete reliance on herbicides.

Program 3 Contact Mr Glen Wright 07 4983 7413 or Mrs Vicki Osten 07 4982 8832

Region North