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Acúmulo de nutrientes em soja convencional e soja RR em diferentes tipos de controle de planta daninha Nutrient accumulation in conventional and glyphosate-resistant soybean under different types of weed control

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  • معلومة اضافية
    • بيانات النشر:
      Sociedade Brasileira da Ciência das Plantas Daninhas, 2012.
    • الموضوع:
      2012
    • Collection:
      LCC:Biology (General)
      LCC:Botany
    • نبذة مختصرة :
      O cultivo da soja - Glycine max (Roundup Ready® - RR) tem aumentado, e pouco tem sido relatada a influência do glyphosate sobre o estado nutricional das plantas. O objetivo deste trabalho foi comparar o acúmulo de nutrientes em diferentes estádios fenológicos entre os cultivares BRS 184 (convencional) e BRS 243 RR (transgênico), com mesmo ciclo vegetativo e reprodutivo, sob diferentes sistemas de manejo de plantas daninhas (capina e herbicida). O acúmulo de nutrientes e matéria seca na soja convencional foi superior ao da soja RR tratada com glyphosate, indicando que um nível maior de nutrientes pode ser requerido pelos cultivares RR para atingir a eficiência fisiológica e, provavelmente, uma nova recomendação de adubação para as culturas RR deve ser levada em consideração devido à redução da eficiência nutricional imposta pelo glyphosate.The cultivation of soybean-Glycine max (Roundup Ready® - RR) has increased and little has been reported on the influence of glyphosate on the nutritional status of the plants. The aim of this work was to compare nutrient accumulation at different phenological stages between the cultivars BRS 184 (conventional) and BRS 243 RR (transgenic), with the same crop cycle, under different weed management systems (hand weed and herbicide). Nutrient accumulation and dry matter in conventional soybean was superior to that in the glyphosate-treated RR soybean, indicating that a higher level of nutrients might be required for the RR cultivars to achieve physiological efficiency and a new fertilizer recommendation for RR crops may be considered, due to the reduced nutritional efficiency imposed by glyphosate.
    • File Description:
      electronic resource
    • ISSN:
      0100-8358
    • Relation:
      http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000100009; https://doaj.org/toc/0100-8358
    • الرقم المعرف:
      10.1590/S0100-83582012000100009
    • الرقم المعرف:
      edsdoj.bf51c4a2f47e494c9a94def0e6072b78