A screening trial using a log-sprayer was able to give indications of the relative efficacy of different herbicides, at different rates, on a range of grass weeds. Results show several promising options. The interpretation of the scores from Table 2 is based on; 0-3 = fully tolerant, 3-5 = mostly tolerant, 5-8 = mostly susceptible and 8-10 = fully susceptible. However where doubt exists around the repeatability of the data based on previous results, the summary of each species may be adjusted. Use of rates below the full label rate is done at growers’ risk. Always consult your agronomist before implementing decisions concerning herbicide screening results. NB. Use of product in this trial does not constitute a recommendation.