TPSL has served agriculture's Top Producers since 1938 with the best scientifically sound methods of Soil, Plant, and Water analysis, including interpretations and recommendations for the most efficient yields of highest quality

TPSL continues the goal of being the leading experts in our field of services to Growers in Soil Fertility and Plant Nutrition that SUSTAINS and REPLENISHES our Greatest Natural Resource: THE SOIL

We offer educational information with our analytical services - we do not sell or endorse products - TPSL's exclusive systems just determines the soil fertility, plant nutrition needs, amounts and timing for Maximum Economic Yields (MEY) using all BEST MANAGEMENT PRACITICES.

We also furnish consulting services in management, growing, product development trials, and comparisons in crop production.