Full TGIF Record # 114454
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Web URL(s):https://stri.lib.msu.edu/vol64-1988/pdf/sptri88064185.pdf#page=2
    Last checked: 08/30/2006
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Publication Type:
i
Report
Content Type:Q & A
Corporate Author(s):Sports Turf Research Institute
Title:Turf disease
Section:Enquiries and replies
Other records with the "Enquiries and replies" Section
Source:Journal of the Sports Turf Research Institute. Vol. 64, 1988, p. 186-187.
Publishing Information:Bingley, West Yorkshire, UK: The Sports Turf Research Institute
# of Pages:2
Question:"We are enclosing a sample of weak turf from our green which appears to have suffered during recent wet weather. Could you tell us if disease is present and how it can be controlled."
Answer/Response:"Your sample has been examined and found to be suffering from the disease commonly called Brown Patch, caused by a fungus named Rhizoctonia. Grasses cut closely, as on bowling and golf greens, show rather different symptoms than longer grass on, for example, golf fairways. The weather during the disease development period may also affect the type of symptoms which may appear. All turfgrass species may be affected. Usually rings or patches of blighted grass may die and leaf spots may be visible on individual plants in the sward. On close-mown turf, and particularly under wet conditions, circular or more irregular patches of blighted grass develop very rapidly. Patches may be up to 0.5 m in diameter. Affected grass is initially purplish in colour and then fades to light brown. During warm, humid weather a dark purplish or grey-brown border may appear around the disease patch, although this "smoke ring", as it has been termed, may only be clearly visible in the early morning. As a matter of interest, on longer grass the light brown disease patches may have a sunken appearance as the diseased grass stops growing, with the grass in the centre later recovering to some extent giving a doughnut-shaped patch which has been called a "frog's eye" in the USA. Since the disease is linked with humid weather and wet surface conditions, drying the surface of the green is an important control method. Morning switching or brushing is vital and spiking, or pricking with a Sarrel roller, may also be helpful. In the longer term, future attacks can be minimised by reducing thatch, relieving compaction and otherwise improving surface drainage. Fungicide treatment can also be effective, the best being products based on iprodione, a chemical particularly effective against this fungus."
Keywords:TIC Keywords: Bowling greens; Disease control; Disease identification; Fungicide application; Rhizoctonia blight; Rhizoctonia solani; Sampling
Language:English
References:0
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sports Turf Research Institute. 1988. Turf disease. J. Turfgrass Sports Surf. Sci. 64:p. 186-187.
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Web URL(s):
https://stri.lib.msu.edu/vol64-1988/pdf/sptri88064185.pdf#page=2
    Last checked: 08/30/2006
    Requires: PDF Reader
    Notes: Available to TGIF and STRI users
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MSU catalog number: SB 433 .A1 S63
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