sm11963 - 2023 Fall Soil Test

[sm11963]

Hello AroundTheYard members! I would really appreciate some help interpreting my first soil test. I am new to lawn care since purchasing my first home last year and spending a lot of time myself reworking the backyard, installing drainage/irrigation, and then grow TTTF from seed.

Details:

• Soil type: Clay loam. It was very clay heavy when I started, but I took a ton (well actually something like 10+ tons) of original dirt out and brought in compost mixes to till into the top 6inches of soil when I first started out. I haven't done the soil breakdown test in water recently (waiting for some rain to pass and will update this post).

• 1300 sqft

• Turf Types: TTTF (from GCI seeds, combo of "GCI Turf Type Tall fescue Grass Seed" and "GCI Turf Spreader Elite Grass Seed"

• Sun: full sun on entire yard for at least 4h /day, partial shade across the yard for another 4h

• Region: San Francisco Bay Area

• Watering: about 0.7" / week

• Mowing: about every other week, I'm a bit inconsistent right now.

• Disease: I don't think I've experienced anything yet. I do see a bit of yellowing of the grass on one side of my yard, not clear to me if this is disease or a nutrient/water issue.

• Weed pressure: there was quite a bit after our initial growth, but after a concentrated effort of removing them (pulling manually), seeing much less weed activity.

• Challenges: Gophers, small patches of very lush, green, fast growing grass throughout the yard with the rest of the yard not seeming as healthy.

I have attached both a Soil and Water test (I was curious about the water I use for irrigation so I figured why not). The Soil test has two zones, A and B, which are from the same lawn, just the left and right side (because the left is doing a bit better and I was curious if there were soil differences).

I am thinking I need to get the Ph down a bit to help the grass utilize more iron but I'm not quite sure where to start on that yet. I also don't have a regular fertilization routine/preference yet so I'm also open to any suggestions for Nitrogen.

Thanks for any insights you can provide!