Week 6: Nitrate

After the big irrigation on week 5, I collected water from the 20 and 40 cm detectors. There was plenty of nitrate at 40 cm depth (red bar). So this week I did a smaller irrigation because I do not want to wash the nitrate down even further. Not much nitrate left at 20 cm (green bar), but the crop will extract nitrate from the 'red bar'.