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Response of Weeds to Soil pH

Published online by Cambridge University Press:  12 June 2017

G. A. Buchanan ,
C. S. Hoveland  and
M. C. Harris
G. A. Buchanan
Affiliation:
Auburn Univ., Agr. Exp. Sta. Auburn, AL 36830
C. S. Hoveland
Affiliation:
Auburn Univ., Agr. Exp. Sta. Auburn, AL 36830
M. C. Harris
Affiliation:
Soil Conser. Agt. Soil Conser. Serv., Ft. Payne, AL 35967
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Abstract

Ten warm-season and six cool-season weed species were grown in the glasshouse on Hartsells fine sandy loam soil and Lucedale sandy loam soil at pH levels from 4.7 to 6.3. Growth of species varied widely in response to soil pH as measured by herbage yield. Showy crotalaria (Crotalaria spectabilis Roth), coffee senna (Cassia occidentalis L.), and large crabgrass (Digitaria sanguinalis (L.) Scop.] were highly tolerant to low pH soils. Sicklepod (Cassia obtusifolia L.), annual bluegrass (Poa annua L.), Carolina geranium (Geranium carolinianum L.), and buckhorn plantain (Plantago lanceolata L.), were medium to high in tolerance. Jimsonweed (Datura stramonium L.), tall morningglory [Ipomoea purpurea (L.) Roth], crowfootgrass [Dactyloctenium aegyptium (L.) Richter], and prickly sida (Sida spinosa L.) were medium to low in tolerance to low soil pH. Growth of Florida beggarweed [Desmodium tortuosum (Sw.) DC], redroot pigweed (Amaranthus retroflexus L.), chickweed [Stellaria media (L.) Cyrillo], common dandelion (Taraxacum officinale (Weber), and wild mustard [Brassica kaber (DC.) L.C. Wheeler var. pinnatifida (Stokes) L.C. Wheeler] was severely reduced in soils with low pH.

Type
Research Article
Information
Weed Science , Volume 23 , Issue 6 , November 1975 , pp. 473 - 477
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

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