Persistent Link:
http://hdl.handle.net/10150/215832
Title:
Effect of Salinity Stress on Development of Pythium Blight of Agrostis palustris
Author:
Rasmussen, S. L.; Stanghellini, M. E.
Issue Date:
1988
Publisher:
College of Agriculture, University of Arizona (Tucson, AZ)
Journal:
Turfgrass and Ornamentals Research Summary
Abstract:
Salinity stress predisposed cultivar Penncross creeping bentgrass to cottony blight caused by Pythium aphanidennatum at two temperature regimes. At 25-32 C, complete necrosis of all inoculated plants occurred at electrical conductivity (Ec) levels from 4.3-7.1 ds/m in 2 days, whereas at Ec levels of 0.5-2.8 ds/m death occurred within 3 days. At 25-27 C, complete necrosis of all inoculated plants occurred at Ec levels from 4.3-7.1 ds /m within a period of 5 days; no death was observed in control or inoculated plants at an Ec level of 0.5 ds/m. Increased salinity levels apparently affected the bentgrass rather than P. aphanidermatum. Mycelia' growth rate of the fungus was increased only slightly by salinity levels up to 7.1 ds/m. Zoospore production of P. aphanidermatum and two other species of Pythium decreased with increasing salinity levels up to 7.1 ds/m; production was completely inhibited at 14.2 ds/m.
Keywords:
Agriculture -- Arizona; Turfgrasses -- Arizona; Turf management -- Arizona; Plants, ornamental -- Arizona; Turfgrass research -- Arizona; Turfgrass research -- Management
Series/Report no.:
Series P-75; 370075

Full metadata record

DC FieldValue Language
dc.titleEffect of Salinity Stress on Development of Pythium Blight of Agrostis palustrisen_US
dc.contributor.authorRasmussen, S. L.en_US
dc.contributor.authorStanghellini, M. E.en_US
dc.date.issued1988-
dc.publisherCollege of Agriculture, University of Arizona (Tucson, AZ)en_US
dc.identifier.journalTurfgrass and Ornamentals Research Summaryen_US
dc.description.abstractSalinity stress predisposed cultivar Penncross creeping bentgrass to cottony blight caused by Pythium aphanidennatum at two temperature regimes. At 25-32 C, complete necrosis of all inoculated plants occurred at electrical conductivity (Ec) levels from 4.3-7.1 ds/m in 2 days, whereas at Ec levels of 0.5-2.8 ds/m death occurred within 3 days. At 25-27 C, complete necrosis of all inoculated plants occurred at Ec levels from 4.3-7.1 ds /m within a period of 5 days; no death was observed in control or inoculated plants at an Ec level of 0.5 ds/m. Increased salinity levels apparently affected the bentgrass rather than P. aphanidermatum. Mycelia' growth rate of the fungus was increased only slightly by salinity levels up to 7.1 ds/m. Zoospore production of P. aphanidermatum and two other species of Pythium decreased with increasing salinity levels up to 7.1 ds/m; production was completely inhibited at 14.2 ds/m.en_US
dc.subjectAgriculture -- Arizonaen_US
dc.subjectTurfgrasses -- Arizonaen_US
dc.subjectTurf management -- Arizonaen_US
dc.subjectPlants, ornamental -- Arizonaen_US
dc.subjectTurfgrass research -- Arizonaen_US
dc.subjectTurfgrass research -- Managementen_US
dc.identifier.urihttp://hdl.handle.net/10150/215832-
dc.relation.ispartofseriesSeries P-75en_US
dc.relation.ispartofseries370075en_US
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