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Allelopathic potential of centipedegrass (Eremochloa ophiuroides)

Published online by Cambridge University Press:  20 January 2017

Travis W. Gannon,
Fred H. Yelverton and
J. Scott McElroy
Fred H. Yelverton
Affiliation:
Department of Crop Science, North Carolina State University, Campus Box 7620, Raleigh, NC 27695
J. Scott McElroy
Affiliation:
Plant Sciences Department, The University of Tennessee, 252 Ellington Plant Science Building, Knoxville, TN 37996
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Abstract

Laboratory and greenhouse experiments were conducted to determine the allelopathic potential of centipedegrass. Germination and growth of indicator species were evaluated in soil leachates, leaf debris, and aqueous leaf extracts of centipedegrass. Centipedegrass soil leachates did not inhibit annual bluegrass, goosegrass, henbit, large crabgrass, or perennial ryegrass germination compared with the nonfertilized control. Incorporated centipedegrass leaf debris did not reduce lettuce germination, shoot weight, or root weight compared with the control. However, shoot and root dry weights of radish were reduced with increasing rates of centipedegrass leaf debris. Six and 9 mg debris g−1 soil reduced radish shoot weight by 49 and 64%, respectively, compared with the control. Aqueous leaf extracts of centipedegrass reduced lettuce germination; however, radicle and hypocotyl length were similar to the control. These data do not conclusively suggest centipedegrass has widespread allelopathic activity; however, significant reductions in shoot and root weight of radish with increasing centipedegrass leaf debris demonstrate a pattern of inhibition of one species against another, which fulfills a requirement of allelopathic interactions.

Keywords

Annual bluegrass, Poa annua L. POAANgoosegrass, Eleusine indica (L.) Gaertn. ELEINhenbit, Lamium amplexicaule L. LAMAMlarge crabgrass, Digitaria sanguinalis (L.) Scop. DIGSAcentipedegrass, Eremochloa ophiuroides (Munro) Hack.lettuce, Lactuca sativa L.perennial ryegrass, Lolium perenne L.radish, Raphanus sativus L.Aqueous leaf extractleaf debrisroot leachategerminationturfgrass

Information

Type
Weed Management
Information
Weed Science , Volume 54 , Issue 3 , June 2006, pp. 521 - 525
Copyright
Copyright © Weed Science Society of America 

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