Here at Phoenix we have been managing Poa annua on our golf greens ever since they changed to being a high percentage of Poa probably 50 or 60 years ago. The old management techniques have certainly given us some problems underneath in our soils and consequently on top on our surfaces. High kg of Nitrogen per annum, too much water, height of cut too low and lots of disturbance to keep on top of organic matter has started the circle of decline and has given Poa annua the advantage it seeks over other more preferred perennial species like Bents. There are several sub species of Poa annua, old established push-up greens like here at Phoenix are 95% Poa, but I would have a guess that 90% of that is Poa annua var reptans which is the preferred species. This so called annual actually grows as an annual, a biennial and a short lived perennial. The pure annual species is more prone to death from disease and drought so is definitely not what we want in the green. All grasses flower and
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Firstly I hope everyone enjoyed their Christmas and I wish everyone of you reading a happy prosperous new year. Let’s hope 2020 is a drier year and certainly in the next few months. This brings me on to my blog nicely. Phoenix golf club is trying to offer no temporary greens for frost situations. Although damage does occur from playing in some types of frost and thaw situations, I’ve never seen this damage become irreversible and by spring when the main root development occurs we usually have decent recovery. This theory hasn’t been tested for a few years now at Phoenix and if the results go as I’m predicting, then this will continue on into winter 2020. Why the temporaries then? I hear you ask. Well firstly the only greens being put on temporary greens (and I’m careful not to call them winter greens) are the 7th, 10th and 17th. This is due to a phenomenon called hypoxia. All living things that need Oxygen can suffer hypoxia. In humans a treatment of an oxygen mask and iron inpu
It’s been a while since my last post with the dreadful weather since the 3rd week in September, enough said about that the better. A couple of topics to cover briefly on this blog post with topics covering the improving weather and the course conditions, greens maintenance and of course the topic on everyone’s mind, the dreaded Covid19. Firstly after the poor autumn and winter, a dry forecast is what we wanted and looks like that’s what we are getting. Spring is in the air and the course should dry steadily as a consequence. Instead of counting mm of rainfall I can look at my other graph regarding Evapotranspiration (ETs). ETs is the sum of evaporation and plant transpiration from the Earth's land to the atmosphere. Through winter low numbers mean little chance to dry especially you have no drainage and water falling from the heavens. This last week and the coming week have seen these numbers climb due to lengthening days and this strange orange thing appearing in the sky!.