Question up front, further explanation below: How long past seed down are folks usually switching over to infrequent deep watering?
I renovated last Fall with a mix of KBG & hybrid cultivars (Barvette, Barduke, Barrari, Everglade, Midnight, Award, NuGlade, Keeneland, SPF30). July & Aug's heat really hurt some areas so I'm planning to completely renovate or PGR & slit overseed with the Barvette HGT mix and Mazama this Fall. In preparation, I started thatch raking (by hand) this weekend and noticed that in several of the most dormant areas I actually pulled up entire bunches of sod. There was an immense amount of root mass for about 1" of soil, with hardly any deeper roots. I water deeply as needed using a Rachio controller (usually 1-2 times per week). This has me wondering if perhaps I should change my irrigation schedule for the renovation this year. At seed down, I watered for only a few minutes 4-5 times per day depending on temp. This worked really well for germination. I don't exactly remember when I changed the watering schedule away from that, but perhaps it was too late?
I'm seeing green in that chunk.. could it be the new grass just needs more water? This first summer I have been watering 1in twice a week and it thrived. Even if it is patchy you can get KBG to fill in with aggressive N.
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