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Mortality of Honey Mesquite and Huisache Seedlings from Herbicides and Top Removal

Published online by Cambridge University Press:  12 June 2017

R. W. Bovey  and
R. E. Meyer
R. W. Bovey
Affiliation:
U.S. Dep. of Agr., Agr. Res. Serv., Dep. of Range Sci., Texas A&M Univ., College Station, TX 77843
R. E. Meyer
Affiliation:
U.S. Dep. of Agr., Agr. Res. Serv., Dep. of Range Sci., Texas A&M Univ., College Station, TX 77843
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Abstract

Picloram (4-amino-3,5,6-trichloropicolinic acid), 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid] and dicamba (3,6-dichloro-o-anisic acid) were sprayed at 0.28 kg/ha on honey mesquite [Prosopis juliflora (Swartz) DC. var. glandulosa (Torr.) Cockerell] and huisache [Acacia farnesiana (L.) Willd.] seedlings 1, 2, 4, 8, 12, and 16 weeks after emergence from seed under greenhouse conditions. Picloram or 2,4,5-T killed 73% or more of the honey mesquite up to 8 weeks after emergence, but the percent killed declined thereafter. Picloram killed more than 90% of the huisache seedlings when applied from 1 to 8 weeks after emergence. Less than 60% of the honey mesquite or huisache seedlings were killed with dicamba at any treatment date. Clipping the plants at the soil level resulted in high mortality (96 to 100%) of both species 1 to 2 weeks after emergence. Treating regrowth of clipped 1-year-old honey mesquite and huisache with 0.28 kg/ha of picloram, dicamba, or 2,4,5-T produced results similar to those obtained from plants grown from seed.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 3 , May 1974 , pp. 276 - 279
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

Literature Cited

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