Coverage · Source

UNH Soil Testing Service — Mehlich Lime Buffer pH

v1.0 (2026-05-23) · University of New Hampshire Cooperative Extension Soil Testing Service uses Mehlich Lime Buffer pH (Hoskins-modified Mehlich, same buffer family as ME and PA). Mehlich-3 extraction for nutrients.

Lime calculator Computes lime rates in-app Lime / pH

Open the publication →

Crops covered

This source publishes a state method — its crop-specific rate tables are maintained in the extension bulletin rather than a fixed crop list, so Zone Forge doesn't claim a crop set here.

Lime / pH source for

NH

Frequently asked

What method does UNH Soil Testing Service — Mehlich Lime Buffer pH use?

Lime calculator. Zone Forge computes this source's published lime rates in-app and cites the method.

Is this free to use?

Yes — Zone Forge's calculators are free and need no signup. This page shows the states and crops UNH Soil Testing Service — Mehlich Lime Buffer pH covers so you can verify the source behind your recommendation.

Browse the full Coverage Explorer — every state, crop and source — or see the science →