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Impact of site-specific weed management in winter crops on weed populations

Author

Listed:
  • P. Hamouz

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

  • K. Hamouzová

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

  • J. Holec

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

  • L. Tyšer

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

Abstract

This work is focused on evaluating the effects of site-specific weed management (SSWM) on weed populations over a 4-year period. SSWM was used on a 3.07 ha experimental field during 2011-2014 in a rotation of winter wheat and winter oilseed rape. The area was split into application cells of 6 × 10 m and weed abundance was evaluated manually in each cell. Four different herbicide treatments were tested. Standard whole-field herbicide application (blanket spraying) was treatment 1. Treatments 2, 3 and 4 comprised SSWM using different thresholds for post-emergent herbicide applications. SSWM resulted in herbicide savings of 6.3-100% for Galium aparine, 0-84.4% for other dicotyledonous weeds, and 31.3-90.6% for annual monocotyledonous weeds. SSWM led to significantly increased density of G. aparine and Tripleurospermum inodorum in the final experimental year when compared to the blanket treatment. Negative correlation coefficients between 2011 and 2014 plant densities found in SSWM treatments (-0.237 to -0.401) indicate that Apera spica-venti does not establish a long-term soil seed bank.

Suggested Citation

  • P. Hamouz & K. Hamouzová & J. Holec & L. Tyšer, 2014. "Impact of site-specific weed management in winter crops on weed populations," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(11), pages 518-524.
    • Handle: RePEc:caa:jnlpse:v:60:y:2014:i:11:id:636-2014-pse
    DOI: 10.17221/636/2014-PSE
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    References listed on IDEAS

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    1. P. Hamouz & K. Hamouzová & J. Holec & L. Tyšer, 2013. "Impact of site-specific weed management on herbicide savings and winter wheat yield," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(3), pages 101-107.
    2. P. Hamouz & K. Hamouzová & L. Tyšer & J. Holec, 2014. "Effect of site-specific weed management in winter crops on yield and weed populations," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(1), pages 27-35.
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    1. P. Hamouz & K. Hamouzová & L. Tyšer & J. Holec, 2014. "Effect of site-specific weed management in winter crops on yield and weed populations," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 60(1), pages 27-35.

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