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Wild Carrot (Daucus carota) Control in No-Tillage Cropping Systems

Published online by Cambridge University Press:  12 June 2017

Jeff M. Stachler  and
James J. Kells
Jeff M. Stachler
Affiliation:
Department of Crop and Soil Science, Michigan State University, East Lansing, MI 48824
James J. Kells
Affiliation:
Department of Crop and Soil Science, Michigan State University, East Lansing, MI 48824
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Abstract

Wild carrot is becoming a serious weed problem in Michigan continuous no-tillage crop production. Greenhouse and field research was conducted to identify effective management strategies for wild carrot control in no-tillage cropping systems. In the greenhouse, PRE applications of acetochlor plus dichlormid (5.8:1 w:w), cyanazine, linuron plus chlorimuron (18:1), and metribuzin plus chlorimuron (10:1) and POST applications of bentazon, CGA-152005, clopyralid, cyanazine, and MON 12000 provided the greatest control of wild carrot seedlings. In the field, PRE and POST treatments containing chlorimuron consistently controlled overwintered wild carrot greater than 71% at 30 d after the POST application in no-tillage soybean. Atrazine, MON 12000, nicosulfuron, and primisulfuron applied POST consistently controlled overwintered wild carrot greater than 78% at 30 DAT in no-tillage corn. Glyphosate at 0.84 or 1.68 kg ae/ha applied in October to established wild carrot provided greater than 74% control the following spring. Early preplant (EPP) applications of glyphosate at 0.84 kg/ha in no-tillage soybean gave 95 and 24% control of overwintered wild carrot in St. Clair and Lenawee Counties, MI, respectively, at 70 DAT. PRE applications of glyphosate at 0.84 kg/ha controlled overwintered wild carrot less than 69% at 58 DAT in no-tillage corn and soybean. Fall applications of 2,4-D ester at 1.12 kg ae/ha provided 18 and 88% control of wild carrot the following spring in Clinton and Lenawee Counties, respectively. EPP applications of 2,4-D ester at 1.12 kg/ha provided 7 and 72% control of overwintered wild carrot in St. Clair and Lenawee Counties, respectively.

Keywords

clopyralid, 3,6-dichloro-2-pyridinecarboxylic aciddichlormid, 2,2-dichloro-N,N-di-2-propenylacetamideglyphosate, N-(phosphonomethyl)glycine2,4-D, (2,4-dichlorophenoxy)acetic acidwild carrot, Daucus carota L. # DAUCAcorn, Zea mays L.soybean, Glycine max (L.) Merr.Differential responseresistanceacetochloratrazinebentazonCGA-152005chlorimuronclopyralidcyanazineflumetsulamglyphosatelinuronmetribuzinMON 12000nicosulfuronprimisulfuron2,4-DGlycine maxZea maysDAUCAAMS, ammonium sulfateCOC, crop oil concentrateDAT, days after treatmentEPP, early preplantNIS, nonionic surfactantPOST, postemergencePRE, preemergenceSTS, sulfonylurea tolerant soybean
Type
Research
Information
Weed Technology , Volume 11 , Issue 3 , September 1997 , pp. 444 - 452
Copyright
Copyright © 1997 by the Weed Science Society of America 

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