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Survival of downy brome ( Bromus tectorum ) seed in four environments by Gail A. Wicks is a Agricultural and Biological Sciences article available to read on EtoBox.

What is Survival of downy brome ( Bromus tectorum ) seed in four environments about?

Downy brome is one of the most troublesome winter annual weeds in winter wheat-fallow rotations in the central Great Plains. A 3-yr seed burial study was initiated to determine how long downy brome seed remained germinable when placed on the soil surface or 2.5 cm deep at four different times in four environments. Only 1 to 7% of the downy brome seed survived after 1 yr on the soil surface in chemical fallow and stubble mulch when deposited in August, but survival varied in September, October, and November. In 1970, a year with low fall and winter precipitation, 36 to 46% of the seed placed on the soil surface of chemical fallow in September, October, and November survived, compared with 1 to 8% for stubble mulch tillage. Early spring tillage covered more seed with soil, and downy brome seed survival decreased. When fall and winter precipitation was normal, stubble mulch and chemical fallow had 1 to 20% germinable seed remaining. Induced dormancy existed in some years. More downy brome seed survived when placed on the soil surface of crested wheatgrass sod (14 to 50%) than on smooth brome sod (0 to 36%). No differences existed among environments when downy brome seed was buried 2.5

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Author

Gail A. Wicks

Publisher

Allen Press Online Publishing; Cambridge University Press; Cambridge University Press (CUP); Weed Science Society (ISSN 0043-1745)

Published

1997

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)