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Evaluation of Selected Herbicides for Manipulating Herbaceous Rangeland Vegetation

Published online by Cambridge University Press:  12 June 2017

Joseph L. Petersen ,
Robert L. Potter  and
Darrell N. Ueckert
Joseph L. Petersen
Affiliation:
Texas Agric. Exp. Stn., Rt. 2, Box 950, San Angelo, TX 76901
Robert L. Potter
Affiliation:
Texas Agric. Exp. Stn., Rt. 2, Box 950, San Angelo, TX 76901
Darrell N. Ueckert
Affiliation:
Texas Agric. Exp. Stn., Rt. 2, Box 950, San Angelo, TX 76901
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Abstract

Rosering gaillardia (Gaillardia pulchella Foug. # GAIPU) and other herbaceous broadleaf plants were effectively controlled for one season by sprays of 2,4-D [(2,4-dichlorophenoxy)acetic acid] at 1.1 kg ae/ha or glyphosate [N-(phosphonomethyl)glycine] at 1.1 kg ai/ha, or a 4:1 combination of 2,4-D and picloram (4-amino-3,5,6-trichloropicolinic acid) at 0.7 kg ae/ha applied in late March in the southern Rolling Plains of Texas. Production of perennial warm-season grasses increased 428, 480, 728, and 1440 kg/ha on a clay site 7 months after spraying with 2,4-D, 2,4-D plus picloram (4:1), atrazine [2-chloro-4-(ethylamino)-6-isopropylamino-s-triazine], and glyphosate, respectively. Application of 4.4 kg ae/ha of dalapon (2,2-dichloropropionic acid) severely damaged perennial warm-season grasses. Annual cool-season grasses were effectively controlled with sprays of atrazine or glyphosate at 1.1 kg ai/ha or dalapon at 4.4 kg ae/ha. Texas wintergrass (Stipa leucotricha Trin. & Rupr.) production was greatest on rangeland treated with 2,4-D or 2,4-D plus picloram (4:1).

Keywords

Gaillardia pulchellaStipa leucotricharangelandforge responseannual grassesGAIPU
Type
Research Article
Information
Weed Science , Volume 31 , Issue 5 , September 1983 , pp. 735 - 739
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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