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 by providing 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, fertilizers 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.