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Lentil (Lens culinaris) Yield as Influenced by Duration of Wild Oat (Avena fatua) Interference

Published online by Cambridge University Press:  12 June 2017

William S. Curran ,
Larry A. Morrow  and
Ralph E. Whitesides
William S. Curran
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv.
Larry A. Morrow
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv.
Ralph E. Whitesides
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv.
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Abstract

Studies were conducted to evaluate the effect of wild oat (Avena fatua L. # AVEFA) interference in lentils (Lens culinaris Medik). An infestation of 32 and 65 wild oats/m2 maintained up to 5 weeks in the field did not reduce lentil grain yield. However, 32 wild oats/m2 reduced yields 32% when allowed to remain for 7 weeks and 49% if they remained until harvest time (11 weeks). Sixty-five wild oats/m2 reduced grain yield 42 and 61% for the same time periods, respectively. In the growth chamber, 69 wild oats/m2 reduced lentil plant dry weight 29% if allowed to remain for 3 weeks, 61% for 5 weeks, and 72% for 7 weeks (harvest time). The field data suggest that wild oat control measures may be delayed for several weeks after lentil emergence without reducing crop yield.

Keywords

CompetitionRhizobium leguminosarumFrankAVEFA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 35 , Issue 5 , September 1987 , pp. 669 - 672
Copyright
Copyright © 1987 by the Weed Science Society of America 

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References

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