carbon, greenhouse gas, climate change, hidden carbon cost
This study was conducted from 2013–2016 to determine how irrigation and N fertilization may be managed to enhance carbon (C) sequestration in turf. In this study, the annual rate of change in soil organic carbon (ΔSOC) was measured under two management regimes, a high management input regime (HMI) and low management input regime (LMI), in a ‘Meyer’ zoysiagrass (Zoysia japonica Steud.) golf course fairway.
Both management regimes maintained acceptable turf quality and at least 75% green cover during both summers. In both management regimes, soil organic carbon (SOC) increased after the 3.16-yr (1154-d) period indicating that C was sequestered in the soil. The C emissions from turfgrass maintenance practices (mowing, irrigation, and fertilization and pesticide applications) are known as “hidden carbon costs” (HCC). The average gross C sequestration rates for the two treatments were not statistically different at 1046 kg C/ha/yr and 976 kg C/ha/yr in HMI and LMI, respectively, prior to subtracting HCC. Once the total estimated HCC was included, the average net sequestration rate was 412 kg C/ha/yr and 616 kg C/ha/yr in HMI and LMI, respectively, with no statistical differences. Our study indicates high and low management input regimes result in similar net C sequestration rates in zoysiagrass golf course fairway turf.
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Braun, Ross C. and Bremer, Dale J.
"High and Low Management Input Regimes Result in Similar Net Carbon Sequestration Rates in Zoysiagrass Golf Course Fairway Turf,"
Kansas Agricultural Experiment Station Research Reports: