Soil pH in Williams, ND: Lime or Sulfur?

Typical topsoil pH in Williams, ND

Typical topsoil in Williams, ND is pH 7.23, just outside the 6-7 range for vegetable garden. Test first; it may need nothing.

What Williams needs, by plant

• Just outside, test first: lawn (cool-season grass) (off by 0.2), vegetable garden (off by 0.2), roses (off by 0.2).
• Sulfur: tomatoes 1.6 lb/100 sq ft; potatoes 3.9 lb/100 sq ft over 2 applications; strawberries 2.8 lb/100 sq ft over 2 applications; blueberries 5.1 lb/100 sq ft over 3 applications; azaleas and rhododendrons 4.6 lb/100 sq ft over 3 applications; blue hydrangeas 4.6 lb/100 sq ft over 3 applications; pink hydrangeas 2.3 lb/100 sq ft over 2 applications.

What to do next

If your test lands near 7.23, you can skip lime and sulfur for lawn (cool-season grass), vegetable garden, roses.

How mixed the soil is

Of the 1,326,821 surveyed acres in Williams, ND, 73% are near neutral (6.5-7.3), 26% are alkaline (above 7.3), 1% are moderately acidic (5.5-6.5). Mapped soils run from pH 6 to 8.8, a spread of 2.8 units across 1,297 soil components. 73% of the land falls in one class, so the county figure is a fair first guess for most yards here.

Clay, organic matter and rates

Topsoil here averages 22.6% clay and 3.36% organic matter, which this site treats as loam. Moving it one pH unit takes about 7 lb of lime or 2.3 lb of sulfur per 100 sq ft. 28% of mapped components carry free carbonate (lime already in the ground).

Williams against the rest of North Dakota

pH 7.23 is right at the North Dakota median of 7.2. 29 of 53 North Dakota counties have more acidic topsoil. Nationally it is more alkaline than the US county median of 6.05.

Closest in pH within the state: Ransom (7.22), Wells (7.22), Pierce (7.23), Stutsman (7.23), Sheridan (7.25), Barnes (7.26), Billings (7.26), Griggs (7.26).

The range in North Dakota runs from Grant at 6.85 to Pembina at 7.5; Williams sits 58% of the way up.