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Influence of Burial Depth on Wild Oats (Avena fatua) Seed Longevity

Published online by Cambridge University Press:  12 June 2017

Stephen D. Miller  and
John D. Nalewaja
Stephen D. Miller
Affiliation:
Univ. Wyo., Dep. Plant, Soil, Insect Sci., Laramie, WY 82071
John D. Nalewaja
Affiliation:
Crop Weed Sci. Dep., Fargo, ND 58105
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Abstract

Field experiments were initiated in 1973 at Fargo and Williston, ND, to evaluate wild oats seed longevity in soil at six burial depths. The number of viable seed decreased rapidly during the first 7 mo from 99% to 21 and 15% at Fargo and Williston, respectively, when averaged over depths. The number of viable seed decreased gradually over the 7- to 168-mo period at Fargo; however, at Williston, viability remained relatively constant for 84 mo and decreased rapidly after 108 mo. At both locations, several wild oats seed were viable 168 mo after burial. More viable wild oats seed were recovered from deep than shallow depths regardless of sampling date. Seed viability at the 6- to 10-cm burial depth was lost more rapidly with nitrogen fertilizer than without nitrogen fertilizer. The percentage of dormant viable seed remained constant for 33 mo at Fargo and 60 mo at Williston regardless of burial depth, but decreased gradually thereafter. Dormant seed percentages at the various depths did not relate to differences in seed viability at these depths.

Keywords

Wild oats, Avena fatua L. ♯3 AVEFADormancygerminationseed viabilitysoil fertilityAVEFA
Type
Research
Information
Weed Technology , Volume 4 , Issue 3 , September 1990 , pp. 514 - 517
Copyright
Copyright © 1990 Weed Science Society of America 

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References

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