Yes, I'm thinking about Autumn already. Why?, It's all to do with the devastating effect of Localised Dry Patch on many greens this year. I've ever had so many people get in touch. It looks like the more regular occurrence of extreme heat and long dry spells is demonstrating the problem of excessively sandy rootzones, much better than I could ever hope to explain...
Super concentrated plant extract acting as a combined wetting agent and BioStimulant
BENEFITS
Super concentrated plant extract acting as a combined wetting agent and BioStimulant
BENEFITS
The plant available water in bowling greens is determined by the physical characteristics of the soil. Most importantly the soil texture dictates the relative percentages of Macro, Meso and Micro pore space in the soil. This soil porosity also dictates the rate at which the green will drain. The balance between drainage and plant available water is one of the most critical components of a performance bowling green maintenance program. Here then is the very crux of all those arguments about top-dressing!
The Sweet Spot in greenkeeping is when your green's Physical, Chemical and Biological components come into line to deliver results you couldn't previously have imagined were possible. Hitting that sweet spot is a lot simpler than you might imagine too, as focus on the soil's biology will naturally correct some of the worst Chemical problems and compensate for some of the worst Physical ones. There should be no problem "selling" this idea to your club either as first of all it saves money and secondly it massively improves green performance and consistency.
Sand Top Dressing - that ubiquitous and apparently simple greenkeeping operation indulged in by most clubs annually is actually a much more complex operation than most give it credit for. In this article John Quinn explains the mechanics of top-dressing. He explains what it can and can't do and why you must understand some soil science before top-dressing is considered.
In part 4 of our series on the Performance Evaluation of the Bowling Green we move on to examining turf texture. Texture is closely tied in to some of the other aspects of Bowling Green Performance we have looked at so far in this series. Texture is one aspect of turf management that the greenkeeper can influence greatly, but seems so simple that it is often overlooked.
In the first part of this series we discovered that the ideal bowling green soil (or rootzone) will be 50% space, 5% organic matter, with the remainder (45%) being made up of mineral matter, namely Sand, Silt and Clay. These are the 3 universal mineral components of soil. Part 1 finished with an explanation of the soil fractions, 5 of which were sands of varying sizes.
In part 2 we found out a little bit more about sand and it's behaviour as a drainage medium and we discovered a little more about how soils are formed. We finished by looking at the importance of sand particle shape and size in bowling green rootzones.
Today we'll try to get a better handle on Soil Texture and discover how some of the soil fractions come about. In particular we will look at the complexity of sand, before getting a better understanding of how soils are formed in the first place. This will help us to understand the importance of sand in bowling green maintenance, but hopefully also to understand more fully, its limitations.
