Sludge Management. The treatment and disposal of industrial and residential sludge is an environmentally sensitive problem. Some traditional disposal routes, such as disposal at sea, are coming under pressure which necessitates finding alternatives. This sludge management ebook describes the effect of composted sludge on the growth of Acacia auriculiformis and Swietenia mahagoni seedlings in the nursery.
Application of sludge to land has been practiced in an attempt to dispose of industrial and residential waste and to gain potential fertilizer value from the application. Since, it contains many essential plant nutrients, sludge can be used as a plant growth medium. Several studies have shown that sludge addition provide significant benefit to crop growth (Gaynor and Halstead, 1976; Beckett et al., 1977). This is not surprising in view of elevated nitr...