American Potato Journal

, Volume 69, Issue 3, pp 167–177 | Cite as

Timing of herbicide application and potato hilling

  • Karen A. Renner
Article

Abstract

Weed management involving the time of hilling and various herbicide applications was compared. The best weed management program consisted of EPTC (S-ethyl dipropylcarbamothioate) at 3.3 kg ai ha-1 preplant incorporated, followed by metribuzin [4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-one] at 0.6 kg ai ha-1 applied delayed pree-mergence, or delayed preemergence applications of metolachlor [2-chloro-N-(2-ethyl-6-methylphenyl)-N-(2-methoxy-1-methylethyl) acetamide] plus linuron [N’-(3,4-dichlorophenyl)-N-methylurea] (2.2 + 1.1 kg ai ha-1) or metolachlor plus metribuzin (2.2 + 0.6 kg ai ha-1) regardless of the time of hilling. Alternatively, postemergence applications of sethoxydim [2-[1-(ethoxyimino) butyl]-5-[2-(ethylthio)propyl]-3-hydroxy-2-cyclohexen-1-one] plus metribuzin plus crop oil concentrate at 0.2 plus 0.6 kg ai ha-1 plus 1.2 L ha-1 provided excellent season-long weed control regardless of the time of hilling. However, potato yield was reduced in 1 of 2 years by this treatment. Preemergence herbicides applied immediately after planting followed by an early hilling at ground cracking did not provide season-long weed control. The cultivar Atlantic was a better competitor with weeds than Russet Burbank in 1 of 2 years.

Additional Key Words

Herbicide timing hilling timing herbicide use 

Compendio

Se comparé el manejo de las malas hierbas incluyendo el momento del aporque y la aplicación de deiversos herbicidas. El mejor programa de manejo consistió de EPTC (S-etil-dipropilcarbamotioato) a razón de 3,3 kg ia ha-1 incorporado antes de la siembra, seguido por metribuzin [4-amino-6-(1, 1-dimetiletil)-3-(metiltio)-1,2,4-triazan-5(4H)-uno] a razón de 0,6 kg ia ha-1 aplicado con retrazo en preemergencia, o aplicaciones, con retrazo en preemergencia, de metolacloro [2-cloro-N-(2-etil-6-metilfenil)-N-(2-metoxi-1-metiletil) acetamida] más linuron [N′-(3,4-diclorofenil)-N-metilúrea] (2,2 + 1,1 kg ia ha-1) o metolacloro más metribuzin (2,2 + 0,6 kg ia ha-1) independientemente del momento del aporque. Alternativamente, aplicaciones de posemergencia de setoxidim [2-[1-(etoxiimino)butil]-5-[2-(etiltio) propil]-3-hidroxi-2-ciclohexano-1-uno] más metribuzin más concentrado de aceite de cultivo a razón de 0,2 más 0,6 kg ia ha-1 más 1,2 L ha-1 controlaron excelentemente las malas hierbas a lo largo de la temporada, independientemente del momenta del aporque. Sin embargo, el rendimiento de la papa se redujo por este tratamiento en uno de dos anos. Los herbicidas de preemergencia aplicados inmediatamente después de la siembra, seguidos por un aporque temprano al momento del agrietamiento del terreno no permitieron un control de las malas hierbas a lo largo de la temporada. El cultivar Atlantic compitió con las malas hierbas mejor que Russet Burbank en uno de dos años.

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Copyright information

© Springer 1992

Authors and Affiliations

  • Karen A. Renner
    • 1
  1. 1.Department of Crop and Soil SciencesMichigan State UniversityEast Lansing

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