September 2025 issue

Volume 58, Issue 9

Agronomic lab results rely on three key pillars: representative sampling, accurate and precise laboratory analysis, and science-based interpretation. This month's cover story provides practical guidelines for preventing contamination, capturing variability, ensuring laboratory quality control, and using validated, research-backed correlations. By strengthening all three areas, agronomists can turn raw lab data into trustworthy, profitable decisions for crop and soil management.

Cover: Yellow chlorotic plants in the foreground can be sampled separately from healthy plants behind them to compare both soil and tissue nutrient levels.