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University of Minnesota Extension

Soil and foliar testing

Foliar nutrient testing — Testing plant leaves for their nutrient content indicates whether the plants have optimal levels of essential nutrients, or if fertilizer is needed.

Interpreting your compost report — Testing compost helps growers to make informed management decisions. We recommend that farmers and gardeners test compost at a testing lab.

Interpreting soil tests for fruit and vegetable crops — After you receive a soil test report, the next step is to interpret it and determine what, if any, amendments to add. 

Soil testing on fruit and vegetable farms — Specialty crop growers should test their soil at least every 2-3 years, and every year in high-value production environments such as high tunnels.

Understanding the soil test report — A soil test report delivers the results of the analytical measurement of the nutrients in the soil. The laboratory analysis can be confusing. We break down the language to help you understand what the numbers mean.

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