Mineralization and Crop Uptake of Nitrogen from Textile Manufacturing Wastewater Sludge Cake
Figure 6
Greenhouse experiment. Soil ammonium-N and nitrate-N extracted from pots after 24 days of growth following amended with ammonium nitrate or sludge at rates shown in mg N kg−1 dry soil. Controls received no amendment. Means with different letters (a, b, c, and d) are significantly different at the 5% probability level.
