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Effect of precipitation on the dissipation, efficacy and selectivity of three chloroacetamide herbicides in sunflower

Author

Listed:
  • M. Jursík

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

  • M. Kočárek

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

  • K. Hamouzová

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

  • J. Soukup

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

  • V. Venclová

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

Abstract

The aim was to compare the efficacy, selectivity to sunflower and dissipation of three chloracetamide herbicides (acetochlor, metolachlor and pethoxamid) in dependence on precipitation after application. A small plot field trial was carried out with sunflower in Central Bohemia in 2010 and 2011. The remaining concentration of active ingredient in the soil of all studied herbicides was lower in the year with a higher temperature and a low level of total natural precipitation at the beginning of the growing season. Higher leaching of metolachlor and pethoxamid was recorded in irrigated plots. No leaching was found in the case of acetochlor. The highest leaching was found for metolachlor (9.2-25.5% in soil layer 5-10 cm). The highest phytotoxicity was found for acetochlor (9.8%) > pethox-amid (4.6%) > metolachlor (1.8%). The mean phytotoxicity in the irrigated plots was 6.9%, compared with 3.9% in the non-irrigated plots. The efficacy of the tested herbicide was affected by wet conditions. The highest efficacy on Chenopodium album, Amaranthus retroflexus, Echinochloa crus-galli and Solanum physalifolium was recorded after application of acetochlor and irrigation.

Suggested Citation

  • 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.
    • Handle: RePEc:caa:jnlpse:v:59:y:2013:i:4:id:750-2012-pse
    DOI: 10.17221/750/2012-PSE
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    Citations

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    Cited by:

    1. J. Andr & V. Hejnák & M. Jursík & V. Fendrychová, 2014. "Effects of application terms of three soil active herbicides on herbicide efficacy and reproductive ability for weeds in maize," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(10), pages 452-458.
    2. 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.
    3. M. Jursík & K. Hamouzová & J. Soukup & J. Andr & J. Holec, 2014. "Differences in sensitivity of F1 and F2 generations of herbicide tolerant sunflower volunteers to selected acetolactate synthase inhibiting herbicides," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(10), pages 446-451.
    4. Veronika TATARKOVÁ & Edgar HILLER & Radoslav HALKO, 2014. "Retention characteristics of acetochlor in soils collected from different depths in relation to soil properties (Žitný ostrov area, SW Slovakia)," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 9(2), pages 58-65.
    5. Miroslav Jursík & Martin Kočárek & Marie Suchanová & Michaela Kolářová & Jaroslav Šuk, 2019. "Effect of irrigation and adjuvant on residual activity of pendimethalin and metazachlor in kohlrabi and soil," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(8), pages 387-394.
    6. 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.
    7. 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.
    8. 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.

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