Weed Technology (1999) 13, 120-126

Oleg Daugovish, Drew J. Lyon and David D. Baltensperger (1999)
Cropping systems to control winter annual grasses in winter wheat (Triticum aestivum)
Weed Technology 13 (1), 120-126
Abstract: Field studies were conducted from 1990 through 1997 to evaluate the long-term effect of 2- and 3-yr rotations on the control of downy brome, jointed goatgrass, and feral rye in winter wheat. At the completion of the study, jointed goatgrass and feral rye densities averaged 8 plants/m² and <0.1 plant/m² for the 2- and 3-yr rotations, respectively. Downy brome densities averaged <0.5 plant/m² for both the 2- and 3-yr rotations, with no treatment differences observed. Winter annual grasses were not eradicated after two cycles of the 3-yr rotations, but weed densities were reduced 10-fold compared to densities after one cycle and more than 100-fold compared with the 2-yr rotations. Wheat grain contamination with dockage and foreign material followed a similar trend. The 3-yr rotations were economically competitive with 2-yr rotations and provided superior control of the winter annual grass weeds.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Oleg Daugovish

Research topic(s) for pests/diseases/weeds:
control - general
environment - cropping system/rotation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Bromus tectorum (weed)	Wheat (Triticum)
	Aegilops cylindrica (weed)	Wheat (Triticum)