I was inspired by a post by Dr. Micah Woods a few years ago questioning the deep and infrequent irrigation regime vs the light and frequent. He made a great case that light and frequent isn't necessarily an inferior way to water. The great thing about this way of thinking is that it left me knowing that my way of irrigating wasn't inferior. It also got me questioning a lot of things about irrigation that weren't necessarily true.
This year while I was setting up our irrigation system I started to think about the timing of when I watered greens. I was thinking about the way we have always done it and it just plain didn't make any sense to me. If you have ever been on the course as the sun is setting you will know that the turf becomes covered in dew and guttation fluid. So basically every night that it wasn't raining, the grass was covered in stagnant sugary liquid anyway. So from a leaf wettness standpoint, there was no benefit to watering last. If anything, waiting until the last minute to irrigate the greens only extended the time that the dew and guttation stood undisturbed on the leaf surface. This is a problem if you believe that dew can lead to increased disease.
|Too green for my liking despite using half as much nitrogen this year as in previous years.|
It would also leave the surface of the greens less wet when we were mowing. Less water pickup into the baskets and less wear from driving equipment on freshly watered turf. Theoretically it would also give the water more time to move down into the soil before being used by the plants. If this water has more time to flow into the soil it also should give me more accurate readings on my moisture meter too. Lots of theories haha!
It would also give the plant the water it required sooner, reducing the time that the plant was in a moisture deficit. Apparently I'm not the only one who thinks this way.
@PenderSuper @mybuddybook @wongturf switch to evenings this year too. Plants sitting all nite stressed seemed worse than some leaf wetness— Reg Langen (@RegLangen) July 13, 2015
|Maintaining the greens has been carefree and almost easy despite record breaking drought, heat and a|
mostly broken irrigation system.