Mineralization and Crop Uptake of Nitrogen from Textile Manufacturing Wastewater Sludge Cake
Figure 5
Greenhouse experiment. (a) Shoot dry mass, (b) shoot N concentration, (c) root length density, and (d) root N concentration after 24 days of growth for pots 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, d, and e) are significantly different at the 5% probability level.
