Originally Posted by FIMCO-MEISTER
Water the root zone you have not the root zone you think you should have. A-1 in my opinion is right. Watering 45 minutes in sandy soil as you describe your situation being is not the way I'd go about it. Get a Lincoln moisture meter from forestry products. Water 45 minutes and take a moisture reading. Do that every hour and you will find the next optimal time to water. Then start cutting back on the amount of water being applied until your initial moisture reading of the root zone shows the sweet spot amount in which you water the root zone but don't waste water that is just infiltrating below the root zone. Might also want to consider a fertilizer injection system that puts out a small amount of fertilizer with every irrigation. right now you are in a yo yo situation. You need to eliminate as much of the yo yo you can. Learn to do a cats cradle. (applause for weak allegory of the week)
I'd find a free source of compost and start a regular application program.
I will give this a try. I think its a great idea. If i could cut back the zone times it is possible to water more frequently, such as in the AM, then again maybe at dinner time. Right now i dont water at dinner because of all the issues about fungas since the grass would be wet all night. right now at 40mins a zone its a must to break the system into two parts (one day front, the other back). The compost is just way to much work. Noone that i know would even try to do anything with almost 2 acres. I dont turn the sprinklers on until end of may, june 1. The system seems to keep the grass to hold its own while everyone else around here is burnt and dormant, unless they have shade or all weeds, the weeds seem to keep it green.
I will lookup that moisture meter and order it up.
I know it sounded like a good idea to just throw some topsoil down but noone in there right mind will spend that kind of money, you just have to live with what you got. And i think with your idea of the moisture meter it will prob bring me to watering totally different.
How far do grass roots usually penetrate? I was told that every other day long watering per zone would force them to grow deeper in search of water. Whatever that means