J Patterson

Publication Date


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DAFWA Collections

Grains and field crops


To investigate the interrelationships between wild oat (Avena sativa; fatua form) genotypes, herbicide treatment and time of application. Method: Split plot glasshouse (Forrestfield) experiment Reps (3) - plus three internal reps. Genotypes (5) - selected from north to south of southwest Western Australia Herbicides (4) - Avenge, S29761, Neoban, Water (Control) Times (6) - Average of 1 to 6 leaf stage Main plots were times and herbicides. Results: The following parameters were measured. .Growth stage at each time of application (number of leaves) .Height at each time of application .Date of full head emergence .Dry weight at full head emergence .Number of tillers .Number of spikelets on main tiller To date, only plant weight has been perused (Table ). Subject to analysis, the results show that there is a difference between the performance of each herbicide. More importantly Avenge and Neoban have optimum application times whereas this is much less critical for S29761. Also, the effect of each herbicide is not uniform on each genotype, possibly explaining variable field results sometimes obtained. The plant weight data will be correlated with other parameters to determine the relationship between herbicide effectiveness and an observable field plant character. The experiment was terminated successfully and the results will be published.

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Western Australia