Skip to main content
×
Home
    • Aa
    • Aa

Influence of Seeding System Disturbance on Preplant Incorporated Herbicide Control of Rigid Ryegrass (Lolium rigidum) in Wheat in Southern Australia

  • Samuel G. L. Kleemann (a1), Christopher Preston (a1) and Gurjeet S. Gill (a1)
Abstract

Field experiments were conducted in 2008, 2011, and 2012 to investigate the interaction between seeding system disturbance and PPI herbicides on rigid ryegrass control in wheat. Of the herbicides examined, prosulfocarb + S-metolachlor, and pyroxasulfone provided ≥ 70% control of rigid ryegrass, irrespective of seeding system. In contrast, trifluralin was the least-effective herbicide against rigid ryegrass and was particularly ineffective when used with single disc (10% control) relative to the triple-disc seeding system (80%) in 2012. Trifluralin consistently reduced wheat density when incorporated using single discs (46 to 59%) but not do so with the triple disc or double-shoot knife-point systems. Although there were large differences in crop establishment because of herbicide phytotoxicity, that did not always translate into large differences in yield because wheat was able to recover from reductions in plant density by increasing the spike number per plant. Pyroxasulfone caused no damage to wheat and appeared to be the most suitable PPI herbicide for use with single-disc seeding systems.

En 2008, 2011 y 2012, se realizaron experimentos de campo para investigar la interacción entre la perturbación causada por el sistema de siembra y el herbicida PPI en el control de Lolium rigidum en trigo. De los herbicidas examinados, prosulfocarb + S-metolachlor, y pyroxasulfone brindaron ≥70% de control de L. rigidum, independientemente del sistema de siembra. En contraste, trifluralin fue el herbicida menos efectivo contra L. rigidum, y fue particularmente inefectivo cuando se usó con el disco sencillo (10% de control) en relación con el sistema de triple-disco (80%) en 2012. Trifluralin redujo consistentemente la densidad del trigo cuando se incorporó usando discos sencillos (46 a 59%), pero esto no ocurrió con el triple-disco o con sistemas de doble cuchilla. Aunque hubo grandes diferencias en el establecimiento del cultivo debido a la fitotoxicidad de los herbicidas, esto no siempre se tradujo en grandes diferencias en rendimiento porque el trigo fue capaz de recuperarse de las reducciones en densidad de plantas al incrementar el número de espigas por planta. Pyroxasulfone no causó daño al trigo y pareció ser el herbicida PPI más adecuado para uso con sistemas de siembra de disco sencillo.

Copyright
Corresponding author
Corresponding author's E-mail: samuel.kleemann@adelaide.edu.au.
Linked references
Hide All

This list contains references from the content that can be linked to their source. For a full set of references and notes please see the PDF or HTML where available.

P Boutsalis , GS Gill , C Preston (2012) Incidence of herbicide resistance in rigid ryegrass (Lolium rigidum) across southeastern Australia. Weed Technol 26:391398

BS Chauhan , GS Gill , C Preston (2006a) Tillage system effects on weed ecology, herbicide activity and persistence: a review. Aust J Exp Agric 46:15571570

BS Chauhan , GS Gill , C Preston (2007) Effect of seeding systems and dinitroaniline herbicides on emergence and control of rigid ryegrass (Lolium rigidum) in wheat. Weed Technol 21:5358

FH D'Emden , RS Llewellyn , MP Burton (2008) Factors influencing the adoption of conservation tillage in Australian cropping regions. Aust J Agric Res Econ 52:169182

EE Kenaga (1980) Predicted bioconcentration factors and soil sorption coefficients of pesticides and other chemicals. Ecotoxicol Environ Saf 4:2638

TC Mueller , LE Steckel (2011) Efficacy and dissipation of pyroxasulfone and three chloroacetamides in a Tennessee field soil. Weed Sci 59:574579

K Rerkasem , WR Stern , NA Goodchild (1980) Associated growth of wheat and annual ryegrass, 1: effect of varying total density and proportion in mixtures of wheat and annual ryegrass. Aust J Agric Res 31:549658

DF Smith , GRT Levick (1974) The effect of infestation by Lolium rigidum Gaud. (annual ryegrass) on the yield of wheat. Aust J Agric Res 25:381393

MJ Walsh , TM Fowler , B Crowe , T Ambe , SB Powles (2011) The potential for pyroxasulfone to selectively control resistant and susceptible rigid ryegrass (Lolium rigidum) biotypes in Australian grain crop production systems. Weed Technol 25:3037

JC Zadoks , TT Chang , CF Konzak (1974) A decimal code for the growth stages of cereals. Weed Res 14:415421

Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

Weed Technology
  • ISSN: 0890-037X
  • EISSN: 1550-2740
  • URL: /core/journals/weed-technology
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Keywords:

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 9 *
Loading metrics...

Abstract views

Total abstract views: 24 *
Loading metrics...

* Views captured on Cambridge Core between 20th January 2017 - 24th September 2017. This data will be updated every 24 hours.