Development of brown patch and Pythium blight in tall fescue as affected by irrigation frequency, clipping removal, and fungicide application
TLDR
Preventive applications of azox-ystrobin at 35-day intervals or postinfection applications of chlorothalonil reduced brown patch severity, but only the azoxystrobin treatment provided aesthetically acceptable (<10%) levels of brown patch control.Abstract:
Settle, D. M., Fry, J. D., and Tisserat, N. A. 2001. Development of brown patch and Pythium blight in tall fescue as affected by irrigation frequency, clipping removal, and fungicide application. Plant Dis. 85:543-546. We studied the effects of irrigation frequency, clipping removal, and fungicide application on the development of Rhizoctonia brown patch (Rhizoctonia solani) and Pythium blight (Pythium aphanidermatum) in tall fescue. Brown patch severity was not significantly different between plots irrigated daily and those irrigated on alternate days. Similarly, no differences in brown patch were observed in plots where grass clippings were returned to the sward with a mulching mower compared with plots where clippings were removed. Preventive applications of azoxystrobin at 35-day intervals or postinfection applications of chlorothalonil reduced brown patch severity, but only the azoxystrobin treatment provided aesthetically acceptable (<10%) levels of brown patch control. However, azoxystrobin applications also increased Pythium blight compared with untreated or chlorothalonil-treated tall fescue, especially in plots that received daily irrigation.read more
Citations
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Differential responses of Brachypodium distachyon genotypes to insect and fungal pathogens
TL;DR: Naturally occurring variation in resistance was found, with two lines being the most resistant and one line being themost susceptible to most of the insects and pathogens tested.
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Evaluation of Calcium Silicate for Brown Patch and Dollar Spot Suppression on Turfgrasses
TL;DR: Calcium silicate application to soil containing adequate Si should not be recommended for control of brown patch on tall fescue, nor should CaSiO 3 be recommended to control Brown patch on creeping bentgrass grown on low Si soil or dollar spot on high Si soil.
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Effect of Brown Patch (Caused by Rhizoctonia solani) Control on Preemergence Herbicide Efficacy in Tall Fescue (Festuca arundinacea)1
TL;DR: Field studies evaluated the effect of brown patch control on preemergence herbicide efficacy in tall fescue and azoxystrobin, a fungicide that controls brown patch suppressed brown patch and increased smooth crabgrass control with pendimethalin in both years.
Studies on dieback of buffel grass (Cenchrus ciliaris) in central Queensland
TL;DR: This is the first multifaceted study of buffel grass dieback (BGD), describing the plant and field symptoms, determining factors responsible for plant death, and determining the method of spread.
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Effect of watered-in demethylation-inhibitor fungicide and paclobutrazol applications on foliar disease severity and turfgrass quality of creeping bentgrass putting greens
TL;DR: Overall dollar spot severity was significantly lower in fungicide treated plots than non-treated plots in both trial years, and short-lived phytotoxicity was observed in plots treated with triadimefon or paclobutrazol + fungicide.
References
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Estimating Turfgrass Evapotranspiration Using Atmometers and the Penman-Monteith Model
TL;DR: The black Bellani plate provides the most precise estimate of turfgrass ET under well-watered conditions.
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Separation and Quantitation of the Sources of Dew on Creeping Bentgrass
TL;DR: Significant amounts of total dew re-accumulated following displacement prior to 0400 h, indicating that dew displacement before that time may be much less efficient at reducing the duration of leaf wetness episodes, regardless of the displacement method used.
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Brown Patch Severity in Perennial Ryegrass as Influenced by Irrigation, Fungicide, and Fertilizers
TL;DR: While brown patch severity was reduced by morning irrigation, SCU + P + K, and iprodione, an excellent level of summer turfgrass quality was not achieved using the extended fungicide application interval.
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Assessing irrigation management for its effects on disease and weed levels in perennial ryegrass
TL;DR: This field study was conducted on perennial ryegrass maintained under golf course fairway conditions in 1995 and 1996 to evaluate water savings afforded by monitoring turf ET and adjusting irrigation accordingly, and to compare preventive and curative pesticide control measures for control efficacy and amounts required.
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Clippings disposal and fertilization influence disease in perennial ryegrass turf
TL;DR: While clippings disposal had significant effects on disease incidence, implementation may not be practical because of the contrary responses of the observed diseases to this management approach.