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1 results

  • Competitive interactions of tomato (Lycopersicon esculentum) and nutsedges (Cyperus spp.)

  • Bielinski M. Santos, Thomas A. Bewick, William M. Stall, Donn G. Shilling
  • Journal:
    Weed Science / Volume 45 / Issue 2 / April 1997
    Published online by Cambridge University Press:
    12 June 2017, pp. 229-233

  • Replacement series experiments were conducted under greenhouse conditions to evaluate effects of population densities and proportions on the intraspecific and interspecific interference of either purple nutsedge or yellow nutsedge with tomato cv. Sunny, under nonlimiting conditions of water and nutrients. When grown with either nutsedge species for 40 d, tomato dry weight per plant increased and dry weight per plant of nutsedge decreased as their relative proportions decreased in mixture. Relative yield analysis indicated tomato is a stronger competitor than either nutsedge species. Both nutsedges appeared to be weak interspecific competitors but strong intraspecific competitors. Attenuated light on a purple nutsedge canopy showed that tomato additions can reduce light received by the weed compared to pure nutsedge stands.