Originally Posted by Who is John Malt
I agree that moisture meters make more sense in a perfect world but without having a separate sensor on every zone (and properly laid out for sun/shade, etc), how could it be as effective as ET? ET is not the silver bullet but I believe it puts us much closer in our goal of proper application rates.
Good point on the per hydrozone SMS, which in an ideal world is the best way to go. That said, using 1-2 SMS's and making adjustments based on hydrozone requirements is no different in practice than any ET controller.
If you don't have the ability/money to use a SMS per hydrozone, then the best option IMO is a mixed approach, SMS with ET calculations. This does not necessarily mean you need to use a ET based controller in order to do this.