Kentucky Bluegrass Thatch Characteristics Following Application of Bio-organic Materials

Authors:
  • WBW.L. Berndt
    W.L. Berndt
  • PRP.E. Rieke
    P.E. Rieke
  • JVJ.M. Vargas
    J.M. Vargas

Abstract
Three bio-organic materials were evaluated at four application rates, based on N contents, for their potential to degrade Kentucky bluegrass (Poa pratensis L.) thatch in a field experiment. Treated thatch was reduced in thickness and had increased earthworm (Lumbricus spp. Hoff.) populations when compared to untreated thatch. Thatch thickness was negatively correlated with level of N (r = –0.91), thatch lignin content (r = –0.94), and earthworm population in the thatch (r = –0.64), and positively correlated with thatch cellulose content (r = 0.62).

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