The disease cycle is generally short, as it requires extended periods of leaf wetness to develop and survive. Helminthosporium or ‘Helmo’ is caused by a common and serious group of diseases, attacking a diverse range of warm and cool season turf grasses. ‘Helmo’ can severely reduce the aesthetic appeal of the turf grass and can lead to the need for turf replacement. Helminthosporium can attack turf under a wide range of temperatures between 3°C and 30°C, with optimum range between 15°C and 18°C. It favours high humidity and therefore thrives under conditions of extended wetness in the leaf canopy. The symptoms of Helmo turf diseases vary, depending upon the specific pathogen, grass species, weather conditions, and cultural conditions involved. In general ‘Black Helmo’ produces small dark spots or patches of dead of dying grass (melting out), which do not measure more than about 10 cm in diameter.
Heritage Maxx contains 95g/L azoxystrobin which combines systemic activity through xylem mobility, translaminar movement to encourage multi-site uptake and even distribution… Read More
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