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Acta Prataculturae Sinica ›› 2016, Vol. 25 ›› Issue (7): 177-185.DOI: 10.11686/cyxb2015524

• Orignal Article • Previous Articles     Next Articles

Physical properties of different turfgrass rootzone soil mixes and their effects on the growth of ‘Lanyin No.Ⅲ’ zoysiagrass

SONG Hua-Wei1, 2, LIU Ying1, 2, WANG Chen1, 2, LIU Tian-Zeng1, 2, ZHANG Ju-Ming1, 2, *   

  1. 1.College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou 510642, China;
    2.Guangdong Engineering Research Center of Grassland Science, South China Agricultural University, Guangzhou 510642, China
  • Received:2015-11-25 Revised:2015-12-24 Online:2016-07-20 Published:2016-07-20

Abstract: Sports turf quality mainly depends on the turf-bed structure and its construction quality, and the choice of rootzone soil mixes greatly affects the turf quality, its usage and the maintenance budget in the longer term. ‘Lanyin No.Ⅲ’ zoysiagrass (Zoysia japonica cv. Lanyin No.Ⅲ) is widely used in sports turf in southern China. This study aimed to examine the effects of five different rootzone mixes with varying physical properties on turf growth of ‘Lanyin No.Ⅲ’ zoysiagrass. The five rootzone mixes were 100% puresand (A), sand∶peat (85%∶15%) (B), sand∶soil (85%∶15%) (C), sand∶soil∶peat (85.0%∶7.5%∶7.5%) (D), and 100% pure soil (E). Soil bulk density, total porosity, capillary porosity, non-capillary porosity, and saturated hydraulic conductivity of the rootzone mixes were measured, together with turf color, regrowth rate and aboveground biomass to determine the effects of the various rootzone media on the growth of ‘Lanyin No.Ⅲ’ zoysiagrass. The bulk densities of the five rootzone media differed in the early stage of establishment, but did not differ in the late stage of establishment. Air permeability and hydraulic conductivity of the rootzone media containing sand were significantly higher than those with pure soil. However, the sand rootzones media containing 15% soil, 15% peat, or mixture of 7.5% peat and 7.5% soil showed no obvious differences in soil porosity and hydraulic conductivity. The rootzone media comprising pure soil produced good turf quality with better color, regrowth speed and more aboveground biomass than the other media. The turf quality when turves were grown on rootzone media of sand mixed with peat, soil, and mixtures of peat and soil were similar, and slightly better than those grown in pure sand. Based on the above results, it is considered that a sand rootzone medium is suitable for the construction of ‘Lanyin No.Ⅲ’ zoysiagrass sports turf because it has more aeration and better drainage than the other media. The rootzone medium comprising pure soil was not suitable for sports turf because of poor aeration and drainage ability.