Nutrient supplementation increased growth and nitrate concentration of lettuce cultivated hydroponically with biogas slurry

Wen Ke Liu, Qi Chang Yang, Lian Feng Du, Rui Feng Cheng, Wan Lai Zhou
  • Acta Agriculturae Scandinavica Section B - Soil & Plant Science, July 2011, Taylor & Francis
  • DOI: 10.1080/09064710.2010.482539

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