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Influence of Water Temperature on Submersion Tolerance of Four Grasses 1
Author(s) -
Beard James B.,
Martin David P.
Publication year - 1970
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1970.00021962006200020024x
Subject(s) - submersion (mathematics) , poa annua , poa pratensis , festuca rubra , agrostis stolonifera , agrostis , biology , agronomy , festuca , poaceae , festuca pratensis , horticulture , botany , lolium perenne , mathematics , mathematical analysis , differentiable function
Mature sods of ‘Toronto’ creeping bentgrass ( Agrostis palustris Huds.), ‘Merion’ Kentucky bluegrass ( Poa pratensis L.), annual bluegrass ( P. annua L.) and ‘Pennlawn’ red rescue ( Festuca rubra L.) were submerged in constant temperature water tanks at water temperatures of 10, 20, and 30 C. Three replications of each species were removed at designated intervals, drained, and placed in a greenhouse maintained at 20 C for evaluation of survival. Differentials in turfgrass species tolerance to extended periods of submersion were evident with Toronto creeping bentgrass showing superior tolerance, Merion Kentucky bluegrass and annual bluegrass ranking intermediate, and Pennlawn red fescue being quite intolerant. The duration of submersion tolerance was inversely proportional to the water temperature. Symptoms of injury at 30 C were visible on the intolerant species at the time of removal from the water tank and after 3 to 4 days on the tolerant species. There was a rapid loss of chlorophyll followed by general plant deterioration. Death occurred initially at the leaf tips of older leaves followed by a brownish discoloration of the leaf sheath.