717863.fig.009a
(a)
717863.fig.009b
(b)
717863.fig.009c
(c)
717863.fig.009d
(d)
Figure 9: Soil nitrate nitrogen as affected by biosolids application, season of application, mulch type (biosolids or inert mulch), and irrigation. Biosolids were applied in 1998. (a) Nonirrigated plots treated with biosolids, (b) irrigated plots treated with biosolids; (c) nonirrigated plots treated with inert mulch, and (d) irrigated plots treated with inert mulch. Solid lines represent dormant season application; dashed lines represent growing season application (redrawn from [14]).