Agricultural Technician how-to

How to Rate Plots for Disease

Consistent ratings make trial data useful.

Updated By the Career Education Institute Curriculum Team
Quick answer

Consistent ratings make trial data useful. In short: review; calibrate; walk, then complete the remaining steps below.

Step by step

  1. Review the rating scale.

  2. Calibrate with a coworker on sample plots.

  3. Walk plots in order.

  4. Rate each plot without looking at prior scores.

  5. Record ratings immediately.

  6. Note anything unusual.

Safety reminders for agricultural technicians

  • Follow pesticide label and REI rules
  • Use PPE in the lab and field
  • Prevent heat illness with water and shade
  • Operate plot equipment safely

Field trial · Plot · Replication · Randomization · Check plot · Growth stage: see the full agricultural technician glossary.

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