
Tissue and SAP Sampling
Heartland Soil Service’s in-season nutrition programs deliver timely, actionable nutrient data through a pre-planned, GDU-driven sampling schedule tailored to each crop and growth stage. With options for proven traditional tissue sampling or ultra-sensitive sap sampling, these programs help identify nutrient issues early and support confident in-season fertility, foliar, and yield-critical decisions.
Benefits
Actionable, ROI-Driven Insights
Strategic, Growth-Stage Timing
Fast, Reliable Results You Can Trust

What Makes This Tissue & SAP Sampling Program Different?
This is not random or reactive sampling. Our program is built around a planned fertility strategy with strategically timed sampling, fast and reliable handling, and interpreted results that connect data to clear, actionable agronomic recommendations focused on ROI.
How Are Tissue & SAP Results Used In-Season?
Instead of raw lab data, results are delivered with agronomic insight specific to each growth stage. Recommendations are designed to align with real application opportunities—such as herbicide or fungicide trips—so nutrition decisions can be made when they still matter.
Why Do Tissue & SAP Samples Need to Be Timed?
Nutrient availability and plant demand change rapidly throughout the growing season. By timing tissue and SAP samples around planting date, RM, and GDUs, we can identify nutrient limitations early—while there’s still time to correct them during normal application windows and positively influence yield.
