Login | Create Account (DAF staff only)

Managerial practices to control wild oats in Queensland.

Wilson, B.J. and Cartledge, O. and Watkins, F.B. (1977) Managerial practices to control wild oats in Queensland. In: 6th Asian-Pacific Weed Science Society Conference, 11-17 July 1977, Jakarta, Indonesia.

[img] PDF
100kB

Abstract

The repeated annual use of herbicides to control wild oats (Avena ludoviciana and A.fatua) was investigated. In the first trial the wild oat seed density in the soil after a wheat crop was less than the initial soil seed density only after treatment with tri-allate at 0.85 kg combined with barban 0.175 kg/ha. Seed numbers in the soil had declined 5 months after the crop, so that the number in the tri-allate plots was also less than one year previously. In a four-year trial, tri-allate and trifluralin (0.4 kg/ha) produced levels of wild oat control which resulted in grain yield increases between 55% and 120% in 3 of the years. There were still 5-12 wild oat plants/m2 in the maturing wheat crop in the third and fourth years of applying tri-allate and trifluralin. Barban was less effective on wild oats than the other herbicides, resulting in smaller yield increases. The incidence of wild oats in relation to crop rotations was surveyed over 4 years on 5 farms covering 2000 ha. Winter crops following 2 or 3 summer crops had low wild oat populations (1 on a scale 0 to 10). The wild oat density was rated at 2.5 and 5 in second and third winter crops respectively.

Item Type:Conference or Workshop Item (Paper)
Additional Information:B.J. Wilson. Agronomist, Queensland Wheat Research Institute, Department of Primary Industries, Toowoomba Qld. Australia 4350 Asian-Pacific Weed Science Society
Keywords:Pathogen; pest; parasite; weed management; noxious plants; weed control; chemicals.
Subjects:Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Pesticides
Plant pests and diseases > Weeds, parasitic plants etc
Deposited On:08 Jun 2004
Last Modified:05 Apr 2011 03:43

Repository Staff Only: item control page