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Herbicide Efficacy Using a Wet-Blade Application System

Published online by Cambridge University Press:  20 January 2017

Scott E. Henson ,
Walter A. Skroch ,
James D. Burton  and
A. Douglas Worsham
Scott E. Henson
Affiliation:
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
Walter A. Skroch
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695
James D. Burton*
Affiliation:
Department of Horticultural Science, North Carolina State University, Raleigh, NC 27695
A. Douglas Worsham
Affiliation:
Department of Crop Science, North Carolina State University, Raleigh, NC 27695
*
Corresponding author's E-mail: [email protected]
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Abstract

Field research was conducted to test a method of herbicide application in which chemical is placed directly onto cut surfaces of plants during a mowing operation. Specially designed mowers equipped with a fluid application system allow for low-volume herbicide application from the cutting blades during the mowing process (wet blade). Two prototype wet-blade machines, including a sickle bar cutter and a Burch Wet-Blade rotary mower, were used to apply triclopyr, clopyralid, and 2,4-D at various rates and combinations using a total carrier volume of 25 L/ha. Weed management studies were conducted on dogfennel, annual lespedeza, and clovers during a 2-yr period. Wet-blade herbicide applications were effective and performed as well as or better than comparative rates applied using a foliar spray technique. Triclopyr at 2.24 kg ae/ha controlled dogfennel when applied with either the rotary mower or the sickle bar cutter (94 and 77%, respectively). Rotary mower applications of 0.20 kg ae triclopyr + 0.07 kg ae clopyralid per hectare in rough turf achieved 90% control of annual lespedeza and 95% control of red and white clovers.

Keywords

Clopyralid2,4-Dtriclopyrannual lespedeza, Lespedeza striata (Thunb.) H. & A.dogfennel, Eupatorium capillifolium (Lam.) Small #3 EUPCPred clover, Trifolium pratense L. # TRFPRwhite clover, Trifolium repens L. # TRFREBuckhorn plantainclopyralidcloverdogfennelherbicide application technologylow volumePlantago lanceolata L., triclopyrBWB, Burch Wet BladeRCBD, randomized complete block design
Type
Research
Information
Weed Technology , Volume 17 , Issue 2 , June 2003 , pp. 320 - 324
Copyright
Copyright © Weed Science Society of America 

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