Articles
RESISTANCE OF RHAPHIOLEPIS SELECTIONS TO ENTOMOSPORIUM LEAF SPOT
Article number
630_3
Pages
43 – 45
Language
English
Abstract
Entomosporium leaf spot (Entomosporium mespili (DC.) Sacc.) on Indian hawthorn (Rhaphiolepis sp.) is recognized as a damaging disease in nurseries and landscapes.
Thirteen selections Indian hawthorn were established in replicated plots in Tifton, Georgia (USDA 8a) on a Tifton loamy sand and evaluated for resistance to leaf spotting and defoliation in May of 1997, 1998, and 2001. Climatic conditions were not suitable for disease development in 1999 or 2000. Ratings by selection to the disease were: Minor, Georgia Petite, OliviaTM (excellent); Georgia Charm (good); Eleanor TaberTM and Pink Pearl(moderate); and Snow White, Clara, Ballerina®, Bay Breeze®, Cameo®, Elizabeth, and Kathy (unacceptable). Due to extensive disease development and defoliation unacceptable selections should not be recommended for nursery production or landscape use in the southeastern United States.
Minor fire blight damage occurred only on the selection OliviaTM.
Thirteen selections Indian hawthorn were established in replicated plots in Tifton, Georgia (USDA 8a) on a Tifton loamy sand and evaluated for resistance to leaf spotting and defoliation in May of 1997, 1998, and 2001. Climatic conditions were not suitable for disease development in 1999 or 2000. Ratings by selection to the disease were: Minor, Georgia Petite, OliviaTM (excellent); Georgia Charm (good); Eleanor TaberTM and Pink Pearl(moderate); and Snow White, Clara, Ballerina®, Bay Breeze®, Cameo®, Elizabeth, and Kathy (unacceptable). Due to extensive disease development and defoliation unacceptable selections should not be recommended for nursery production or landscape use in the southeastern United States.
Minor fire blight damage occurred only on the selection OliviaTM.
Publication
Authors
J.M. Ruter
Keywords
Defoliation, disease, Erwinia, Indian hawthorn
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