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Cultural Systems Can Reduce Reproductive Potential of Winter Annual Grasses

Published online by Cambridge University Press:  12 June 2017

R. L. Anderson
R. L. Anderson*
Affiliation:
Central Great Plains Research Unit. Akron, CO 80720
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Abstract

Feral rye and jointed goatgrass are winter annual grasses that infest winter wheat in the western United States. Currently, no herbicides are available that selectively control these weeds in wheat. Because of this constraint, producers need cultural practices that reduce the seed densities of these two grasses in the soil seedbank. This research shows that applying nitrogen 5 mo before wheat planting and increasing the seeding rate with a tall wheat cultivar reduces seed production per plant of either species by > 40%. However, tall wheat cultivars usually yield less grain than semidwarf cultivars. Producers can avoid this yield loss by combining narrow rows with time of N application and increased seeding rate of semidwarf cultivars. This combination reduces weed seed production similarly to cultural systems with tall cultivars.

Keywords

Jointed goatgrass, Aegilops cylindrica Host # AEGCYferal rye, Secale spp.winter wheat, Triticum aestivum L. ‘TAM 107’ and ‘Lamar.’Cultural practicesseedbank managementsystems approachAEGCY
Type
Research
Information
Weed Technology , Volume 11 , Issue 3 , September 1997 , pp. 608 - 613
Copyright
Copyright © 1997 by the Weed Science Society of America 

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References

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