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Efficacy and selectivity of pre-emergent sunflower herbicides under different soil moisture conditions

Author

Listed:
  • Miroslav JURSÍK

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Josef SOUKUP

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Josef HOLEC

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Jiří ANDR

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Kateřina HAMOUZOVÁ

    (Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

Abstract

We ranked the most frequently used pre-emergent herbicides in sunflower (Helianthus annuus) according to their efficacy and selectivity under different soil moisture conditions within 2008-2011. The efficacy of oxyfluorfen, aclonifen, acetochlor, dimethenamid, and propisochlor on the majority of weeds (Chenopodium album, Echinochloa crus-galli, Amaranthus retroflexus, Mercurialis annua,and Solanum physalifolium) was only slightly affected by the soil moisture and these herbicides can be used in arid and semiarid regions. The efficacy of linuron, prosulfocarb, and pethoxamid was strongly affected by soil moisture and was insufficient under dry conditions. The majority of herbicides showed good selectivity for sunflower. Crop injury rate of 5-15% was recorded after application of flurochloridone and acetochlor. For flurochloridone, the phytotoxicity increased due to irrigation after herbicide application. The highest sunflower injury rate (27-35%) was recorded after application of oxyfluorfen.

Suggested Citation

  • Miroslav JURSÍK & Josef SOUKUP & Josef HOLEC & Jiří ANDR & Kateřina HAMOUZOVÁ, 2015. "Efficacy and selectivity of pre-emergent sunflower herbicides under different soil moisture conditions," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 51(4), pages 214-222.
    • Handle: RePEc:caa:jnlpps:v:51:y:2015:i:4:id:82-2014-pps
    DOI: 10.17221/82/2014-PPS
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    References listed on IDEAS

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    1. M. Jursík & M. Kočárek & K. Hamouzová & J. Soukup & V. Venclová, 2013. "Effect of precipitation on the dissipation, efficacy and selectivity of three chloroacetamide herbicides in sunflower," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(4), pages 175-182.
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    Cited by:

    1. Ivana Doležalová & Irena Petrželová & Martin Duchoslav, 2020. "Selectivity and efficacy of herbicides dimethachlor and pethoxamid in rocket crop," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 56(4), pages 305-316.
    2. Miroslav Jursík & Martin Kočárek & Michaela Kolářová & Lukáš Tichý, 2020. "Effect of different soil and weather conditions on efficacy, selectivity and dissipation of herbicides in sunflower," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(9), pages 468-476.
    3. Jiří ANDR & Martin KOČÁREK & Miroslav JURSÍK & Veronika FENDRYCHOVÁ & Lukáš TICHÝ, 2017. "Effect of adjuvants on the dissipation, efficacy and selectivity of three different pre-emergent sunflower herbicides," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 63(9), pages 409-415.
    4. Miroslav Jursík & Veronika Fendrychová & Michaela Kolářová & Jiří Andr & Josef Soukup, 2017. "Optimising Clearfield and ExpressSun sunflower technologies for Central European conditions," Plant Protection Science, Czech Academy of Agricultural Sciences, vol. 53(4), pages 265-272.
    5. Lukáš TICHÝ & Miroslav JURSÍK & Michaela KOLÁŘOVÁ & Václav HEJNÁK & Jiří ANDR & Jaroslava MARTINKOVÁ, 2018. "Sensitivity of sunflower cultivar PR63E82 to tribenuron and propaquizafop in different weather conditions," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 64(10), pages 479-483.

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