Plantback to susceptible crops following application of picloram+triclopyr in northeastern Australian fallow

Annetts, R.A.; Kennedy, K.J.; Love, C.O.

13th Australian Weeds Conference weeds "threats now and forever?", Sheraton Perth Hotel, Perth, Western Australia, 8-13 September 2002 papers and proceedings: 87-90


Accession: 003886374

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The plantback period of Grazon DS (100 g picloram litre-1+300 g triclopyr litre-1), when applied to winter and summer crops (wheat, barley, chickpea, faba bean, rape, winter lucerne, sorghum, sunflower, cotton, soyabean, and mung bean) on fallow crop land with black, cracking clay soils was investigated in six field trials carried out from 1999 to 2001 in northern New South Wales and southern Queensland, Australia. Rotational crop, application rate, application timing, and rainfall after application affected the plantback period of Grazon DS on different rotational crops. For applying Grazon DS with a two-month plantback period, at least 40 to 50 mm of rain is required to safely plant these crops. For a four-month plantback period, at least 100 mm rain is required to safely plant these crops.