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UConn Soil Nutrient Analysis Laboratory — SMP / Sikora buffer

v1.0 (2026-05-23) · University of Connecticut Soil Nutrient Analysis Laboratory (SNAL). Uses SMP / Sikora buffer; Modified Morgan extraction for nutrients. Per NE Regional Bulletin 493 Ch. 3 (CT and MA are SMP / Sikora users). UConn also serves Rhode Island farmer samples since URI doesn't run a full agronomic lab.

Lime calculator Computes lime rates in-app Lime / pH

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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

CTRI

Frequently asked

What method does UConn Soil Nutrient Analysis Laboratory — SMP / Sikora buffer use?

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

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