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Turfgrass Quality and Disease Suppression on a Creeping Bentgrass Green by Various Nitrogen Sources  

Lee, Sang-Kook (Dept. of Golf, Hoseo University)
Publication Information
Asian Journal of Turfgrass Science / v.24, no.2, 2010 , pp. 125-130 More about this Journal
Abstract
Dollar spot and brown patch disease are the most economically important disease for highly maintained turfgrass area such as golf courses. Previous researches indicated that various natural fertilizers are good nitrogen (N) sources and they may lead to turf disease suppression because disease suppression by natural N sources may be due to microbial activity increased. Increased microbial activities in soil reduce the activity of plant pathogen. The objective of this study was to evaluate efficacy of various N sources to suppress dollar spot and brown patch on creeping bentgrass. The seven N sources and fungicide combinations were investigated for turf disease suppression. $Emerald^{TM}$ and $ProStar^{TM}$ were applied for the applications of fungicide combination. No differences were found on turf quality among N source treatments. However, there was significant difference on turf quality between fungicide combination and fungicide combination plus urea. Overall, N source had no significant effects on suppression of dollar spot and brown patch. Although there were a few differences among N source treatments, fungicide treatments were needed for turf disease suppression for highly maintained turfgrass area such as golf courses.
Keywords
Brown patch; Creeping bentgrass; Dollar spot; Nitrogen;
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  • Reference
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