Kaminski John E, Dernoeden Peter H
Department of Natural Resource Sciences and Landscape Architecture, University of Maryland, College Park 20742.
Plant Dis. 2002 Nov;86(11):1253-1259. doi: 10.1094/PDIS.2002.86.11.1253.
Bentgrass dead spot (BDS) is a disease of creeping bentgrass incited by Ophiosphaerella agrostis. This project was designed to determine the susceptibility of field-grown bentgrass cultivars to BDS and to gather information regarding the geographic distribution and field conditions favoring the disease. In a field cultivar evaluation trial, all major Agrostis spp. used on golf courses, including colonial, creeping, and velvet bentgrasses, were shown to be susceptible to an isolate of O. agrostis. Velvet bentgrass cvs. SR7200 and Bavaria were among the most and least susceptible cultivars, respectively. Among creeping bentgrass cultivars, L-93 generally was the most susceptible and Pennlinks, Penncross, and Crenshaw were among the least susceptible. Although recovery of BDS patches in the autumn was slow, Bardot colonial bentgrass and Crenshaw, Imperial, L-93, and Penn G-6 creeping bentgrasses showed the most rapid recovery prior to winter. Variation in the virulence of isolates and the potential for races of the pathogen, however, may affect cultivar susceptibility. The disease was most commonly found on 1- to 4-year-old golf greens and disease severity declined 1 to 3 years after it first appeared. BDS only was found on sand-based greens, collars, and tees and has not been observed in bentgrass grown on native soil. Between 1998 and 2001, O. agrostis was isolated from diseased leaves, roots, crowns, and stolons of creeping bentgrass and hybrid bermudagrass turf samples received from 13 states. The disease was most severe in sunny and exposed locations, especially on ridges, mounds, and slopes. In the mid-Atlantic region, BDS appeared as early as May and remained active as late as December. The disease was most active in July and August, and usually became inactive with the advent of frost in October.
翦股颖币斑病（BDS）是由禾顶球腔菌引起的匍匐翦股颖病害。本项目旨在确定田间种植的翦股颖品种对BDS的易感性，并收集有关有利于该病发生的地理分布和田间条件的信息。在一项田间品种评估试验中，高尔夫球场上使用的所有主要翦股颖属植物，包括匍匐翦股颖、殖民翦股颖和天鹅绒翦股颖，均被证明对禾顶球腔菌的一个分离株易感。天鹅绒翦股颖品种SR7200和巴伐利亚分别是最易感和最不易感的品种。在匍匐翦股颖品种中，L-93通常是最易感的，而Pennlinks、Penncross和Crenshaw则是最不易感的品种之一。尽管秋季翦股颖币斑病斑块的恢复速度较慢，但巴尔多殖民翦股颖以及Crenshaw、Imperial、L-93和Penn G-6匍匐翦股颖在冬季来临之前显示出最快的恢复速度。然而，分离株毒力的变化以及病原菌存在生理小种的可能性可能会影响品种的易感性。该病最常见于1至4年生的高尔夫球果岭上，病害严重程度在首次出现后的1至3年有所下降。BDS仅在沙基果岭、围边和发球台上发现，在原生土壤上种植的翦股颖中未观察到。1*此处年份有误，原文为1998至2001年，译文年份应保持一致，故修改译文为1998至2001年998年至2001年期间，从13个州收到的匍匐翦股颖和杂交狗牙根草坪样本的病叶、病根、病冠和病匍匐茎中分离出了禾顶球腔菌。该病在阳光充足和暴露的地方最为严重，尤其是在山脊、土堆和斜坡上。在大西洋中部地区，BDS最早在5月出现，最晚在12月仍有活动。该病在7月和8月最为活跃，通常随着10月霜冻的到来而停止活动。
