It’s blazing hot here in Texas and Rachio is running like a mad-man to keep up. I’ve done leg work to understand my soil, root depths, precip rates, slopes - basically everything that needs to be accurate for Rachio to be accurate. I have no doubt that Rachio is putting down the OPTIMAL amount of water for my zones…~2.56"/week.
My question is, what’s the best way to get to a “sub-optimal” level of watering, say, 1.5"/week.
A few reasons for this - given my very low precip rates (0.3-0.4 depending on zone), Rachio is running 4-5 times a week to get the required amount of water down. Primary concern is fungus with my grass being that wet that often. Secondary concern is the coming water bill. I’ve also started a PGR regimen which should further reduce my water requirements.
Historically I’ve seen that adjusting crop coefficient is the best way to accomplish this. But all those posts predate the dynamic crop coefficient feature, which I have enabled. And unfortunately, the crop coefficient feature doesn’t have an “offset” function, which would allow rachio to control the coefficient, but offset it by my stated amount (would help GREATLY with the “set it and forget it” ideal of flex daily).
In the moisture maps, I’ve seen the days are currently depleting 40-50% of the default 50% MAD value, meaning every other day I hit 0 and it waters. I’m wondering if bumping MAD to 60%, giving me that extra 10%, might be just what I need to give myself an extra day between waterings, and if this would be the most elegant solution, in my case, to decrease frequency.
I know all of the other settings that can be adjusted and how things are impacted as a result, but for all the values I’ve personally measured (soil, awc, root depth, slope, sun, precip rate), I’d like to keep them grounded in reality, rather than gaming the system.