EVALUATION OF SEWAGE SLUDGE AS A SOIL CONDITIONER FOR NEWLY RECLAIMED SANDY CALCAREOUS SOILS OF EGYPT | ||||
| Journal of Soil Sciences and Agricultural Engineering | ||||
| Article 8, Volume 25, Issue 11, November 2000, Page 7267-7281 PDF (843.46 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jssae.2000.260230 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| G. M. El-Dawwy,; M. A. Morsy | ||||
| Soil Sci. Dept., Fac. of Agric., Minia Univ., Minia, Egypt | ||||
| Abstract | ||||
| Two pot experiments were conducted during two successive seasons of 1998 and 1999 to evaluate the influence of sewage sludge applied to sandy calcareous soils on physical and chemical properties of the soil, plant growth, dry matter yield, water consumption, water use efficiency, elemental content as well as uptake of N, P, K and Pb by Casuarina equistifolia seedlings which used as windbreaks and wooden trees. The studied soil was treated by different rates of sewage sludge namely, 0, 1, 2, 3, 4, 5 and 6%. The changes in chemical properties of the treated soil before and after cultivation were measured. Also, the soil content of total N, available P, K and DTPA Pb was determined after cultivation. The obtained results showed that application of sewage sludge to sandy calcareous soils, improved hydro-physical and chemical properties of the soil.. Plant growth, dry matter yield, water use efficiency, concentration and uptake of N, P, K and Pb by plants were increased. The rate of increase percent in different treatments for NPK uptake by plants relative to control (100%) were 394.3%, 353.1%, 249.5% and 390.2%, 431.9%, 306.9% in the two successive seasons, respectively. The results showed that the application of sewage sludge to newly reclaimed sandy soil improved soil chemical properties before and after cultivation and nutrients status of the soil after cultivation. The most outstanding beneficial effect was obtained as a result of adding sewage sludge to sandy calcareous soils at the rate of 4% (40 ton/fed). So, one can conclude that sewage sludge can be considered as a good soil conditioner for improving coarse textured soils properties and planting wooden trees in the desert as windbreaks and as a source of wood production. | ||||
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