Guidance for measuring plant population and assessing CSFB damage

Make the following assessments at 5 locations within the crop at the 2 true leaf stage

  • To measure plant population where the crop has been drilled in rows, count the number of plants in 1m length of row at the 2 true leaf stage. Measure and record the row width (cm).
  • If the crop has been broadcast, count the number of plants in a 1m x 0.5m area.
  • Estimate the % leaf area affected by CSFB damage at the sampling position (using the figure below).
  • Take an overhead photograph of the assessment area. Repeat this at another four positions across the field.
  • It is possible to use the Xarvio Scounting app to assess the plant population of the crop using the Emergence analysis. The app will work on crops between BBCH 9 – 19. If you are using the Xarvio app, please still complete the online form with the plant population information and email the overhead photos of the crop to with your OF number. The app is available through app stores xarvio SCOUTING - Apps on Google Play or by using the QR code below.
Xarvio App QR

This assessment can be done later if your crop is more forward.

CSFB damage scale