
TY  - JOUR
A1  - Campbell, MH 
A1  - Gilmour, AR 
A1  - Vere, DT 
T1  - Effects of time and rate of application of herbicides on serrated tussock (<I>Nassella trichotoma</I>) and improved pasture species. 2. Tetrapion
JF  - Australian Journal of Experimental Agriculture
JO  - Aust. J. Exp. Agric.
Y1  - 1979
VL  - 19
IS  - 99
SP  - 476
EP  - 480
KW  - 
UR  - https://doi.org/10.1071/EA9790476 
N2  - The effects of time and rate of application of tetrapion on burnt and unburnt serrated tussock, growing with and without improved species, were measured in four experiments carried out near Bathurst, New South Wales, between 1975 and 1978. Tetrapion proved effective in killing unburnt serrated tussock when applied in each season of the year. The most economical rates proved to be 1.00 kg a.i, ha-1 in spring and summer and 1.33 kg a.i. ha-1 in autumn and winter. Tetrapion was also effective in killing serrated tussock that had been burnt six and nine months before spraying. Although tetrapion had harsh phytotoxic effects on Phalaris aquatica and Trioflium repens growing in association with serrated tussock, these improved species recovered. Thus it proved possible to selectively remove serrated tussock from P. aquatica and T. repens by using tetrapion. Based on 1979 costs, tetrapion appears an economic alternative to other herbicides currently used to kill serrated tussock. 
ER  -

