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Typhula Blight Typhula blight, also known as gray snow mold or speckled snow mold, is most severe under extended periods of deep snow that covers a wet turfgrass on unfrozen soil. The pathogen Typhula incarnata is most active when temperatures are 1-2 C. Grayish to straw colored circular patches ranging from 2.5 cm to 1 meter in diameter appear at snow melt. A grayish mycelium may be present infected turf, which gives it the grayish or speckled look. Read the Full Story

Moss Thirty years ago moss was of little problem on golf courses. Moss was found in dense, moist, shaded areas in roughs, or if present on golf greens, it usually was restricted to mild moist oceanic climates. In areas like United Kingdom, Ireland, and New Zealand moss is a significant problem on greens. In the last 15 years moss has become more widespread problem on putting greens throughout the temperate regions of the world. Read the Full Story

Seeing the Color Purple? The purple coloration of turf plants at this time of year may raise some concerns for turf managers, and it may have some justification. Read the Full Story

Zoysiagrass globalrelva.org Zoysiagrass is an ideal C4 lawn turfgrass in sub-tropical and tropical regions. It will grow on a variety of different soils and across a wide soil pH range. Its salt tolerance is almost as good as bermudagrass. The shade tolerance of zoysiagrass is better than bermudagrass and has good drought tolerance. Read the Full Story

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GTN Summary - 2011

Last Updated on Thursday, 26 January 2012 00:45 Written by Karl Danneberger

logo A summary of the productivity and impact of the GlobalTurf Network for 2011 is summarized below. The data enclosed are gathered from Siteground.com (host server), google analytics, bluetoad, YouTube, and YouKu.

I. 2011 Highlights:

Typhula Blight

Last Updated on Saturday, 31 December 2011 04:03 Written by Karl Danneberger

Typhula blight, also known as gray snow mold or speckled snow mold, is most severe under extended periods of deep snow that covers a wet turfgrass on unfrozen soil. The pathogen Typhula incarnata is most active when temperatures are 1-2 C. Grayish to straw colored circular patches ranging from 2.5 cm to 1 meter in diameter appear at snow melt. A grayish mycelium may be present infected turf, which gives it the grayish or speckled look.

Rust

Last Updated on Saturday, 22 October 2011 17:57 Written by Karl Danneberger

Rust is a common disease of cool season turfgrasses during fall. It is most severe on Kentucky bluegrass (Poa pratensis), perennial ryegrass (Lolium perenne), and tall fescue (Festuca arundinacea) when their growth has slowed. Environmental conditions favorable for rust include temperatures in the range of 68 to 86 F (20 to 30 C), low light, and wetness on the leaf. Symptoms appear as a yellowish to reddish colored turf. Upon closer examination of the leaves, the reddish brown pustules are the sign for this disease. If symptoms become severe, thinning of the turf can occur. The major pathogens of rust are in the genus Puccinia. The species of Puccinia are often specific to the turfgrass species. Regarding cool season turfgrasses, primarily the bluegrasses and ryegrasses, the major rust diseases are known as stem, stripe and leaf rusts.

The Brazilian Environmental Laws- something to consider before building a golf course

Last Updated on Saturday, 22 October 2011 15:04 Written by Carolina Nalon

On our last live streaming video professor Karl Danneberger asked me what the most important environmental issue going on in Brazil was. I answered that the proposal for a new Brazilian Forest Code was the most polemical topic.

The old forest code, created on 1965, establishes strict laws to landowners in order to promote biodiversity conservation and water resources protection inside of private and public properties. Depending on which part of Brazil you live, you may be required to leave from 30 to 80% of your property completely covered with forest. The code still stipulates many other requirements in order to protect the water resources in the property and the genetic flow among species of that ecosystem.

Yellow Tuft

Last Updated on Saturday, 01 October 2011 21:14 Written by Karl Danneberger

Yellow tuft can occur on all turfgrass species. It is sometimes referred to as downy mildew primarily on warm season turfgrasses. Where it is most noticeable and considered a problem or nuisance is on creeping bentgrass during spring and fall under cool (43 to 66 F) moist conditions.

Symptoms initially appear as a stunted growth and a thickening of the leaf blades.

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This past year saw a change in greenskeeping and golf in the Czech Republic. Greenskeeping was finally classified as a profession by Czech Statistical Office (CSU). It means that greenskeeping became...

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