TY - JOUR
T1 - Physiological response to water de¢cit stress with restricted rooting intall fescue and zoysiagrass
AU - Culpepper, Travis
AU - Young, Joseph
AU - Montague, David T.
AU - Sapkota, Manish
AU - Escamilla, Eduardo
AU - Wherley, Benjamin
N1 - Publisher Copyright:
© 2020, Horticultural Research Institute. All rights reserved.
PY - 2020/3
Y1 - 2020/3
N2 - Urban soils may restrict turfgrass rooting depth with shallow soil layers in high sand content soils, which may influence water conservation. A greenhouse study sought to quantify water usage and determine the physiological response of turfgrasses at four irrigation levels. ‘ATF-14340 tall fescue (Schedonorus arundinaceus (Schreb.) Dumort. nom. cons.; syn. Festuca arundinacea Schreb.), ‘Jamur’ Japanese lawngrass (Zoysia japonica Steud.), and ‘Zeon’ Manilagrass [Zoysia matrella (L.) Merr.] were established in 10 cm (4 in) diameter by 17.8 cm (7 in) tall containers. Each species was irrigated with 16.5, 21.9, 27.3, or 32.7 mm.wk1 (0.65, 0.86, 1.1, or 1.3 in.wk1). Gravimetric water loss was determined by pre-and post-irrigation pot weights. Turf quality, leaf discoloration, percent green cover, and gross photosynthesis were evaluated weekly and root parameters were measured at the conclusion of each trial. Although root mass was similar among species, water deficit stress and leaf discoloration occurred sooner in tall fescue than the two Zoysia species, reducing turf quality and green cover. Japanese lawngrass and Manilagrass had greater stomatal conductance, resulting in 109 and 89% higher gross photosynthesis relative to tall fescue. Both zoysiagrasses maintained acceptable turf quality with 27.3 mm water.wk1. However, tall fescue quality was not acceptable at any irrigation level.
AB - Urban soils may restrict turfgrass rooting depth with shallow soil layers in high sand content soils, which may influence water conservation. A greenhouse study sought to quantify water usage and determine the physiological response of turfgrasses at four irrigation levels. ‘ATF-14340 tall fescue (Schedonorus arundinaceus (Schreb.) Dumort. nom. cons.; syn. Festuca arundinacea Schreb.), ‘Jamur’ Japanese lawngrass (Zoysia japonica Steud.), and ‘Zeon’ Manilagrass [Zoysia matrella (L.) Merr.] were established in 10 cm (4 in) diameter by 17.8 cm (7 in) tall containers. Each species was irrigated with 16.5, 21.9, 27.3, or 32.7 mm.wk1 (0.65, 0.86, 1.1, or 1.3 in.wk1). Gravimetric water loss was determined by pre-and post-irrigation pot weights. Turf quality, leaf discoloration, percent green cover, and gross photosynthesis were evaluated weekly and root parameters were measured at the conclusion of each trial. Although root mass was similar among species, water deficit stress and leaf discoloration occurred sooner in tall fescue than the two Zoysia species, reducing turf quality and green cover. Japanese lawngrass and Manilagrass had greater stomatal conductance, resulting in 109 and 89% higher gross photosynthesis relative to tall fescue. Both zoysiagrasses maintained acceptable turf quality with 27.3 mm water.wk1. However, tall fescue quality was not acceptable at any irrigation level.
KW - Gravimetric water loss
KW - Japanese lawngrass
KW - Manilagrass
KW - Photosynthesis
KW - Tall fescue
UR - http://www.scopus.com/inward/record.url?scp=85085011400&partnerID=8YFLogxK
U2 - 10.24266/0738-2898-38.1.29
DO - 10.24266/0738-2898-38.1.29
M3 - Article
AN - SCOPUS:85085011400
VL - 38
SP - 29
EP - 36
JO - Journal of Environmental Horticulture
JF - Journal of Environmental Horticulture
SN - 0738-2898
IS - 1
ER -