EFFECT OF SOME AMELIORATION PROCESSES ON NUTRIENTS AVAILABILITY AND UPTAKE IN SALT AFFECTED SOILS | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 3, Volume 28, Issue 10, October 2003, Pages 7455-7465 PDF (3 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2003.245311 | ||
| Author | ||
| E. A. E. Gazia, | ||
| Soil, Water and Environment Research Institute - ARC | ||
| Abstract | ||
| Salt affected soils in Egypt are located, mostly, at North Delta. Reclamation processes of such soils are commonly using chemical amendments as gypsum (G) or phosphogypsum (PG) and/or organic amendments as farmyard manure (FYM), in addition to deep ploughing using sub-soiler. The current study was carried out for two seasons (2000 and 2000/2001) to study the effect of some amelioration processes on macro and micronutrients availability, elemental uptake and yield productivity of salt affected soil at North Delta. Amelioration treatments (FYM and/or PG application) have a significant effect on increasing the available N, P, and K contents in the sequent layers of soil profile especially in the surface layers. Also, amelioration treatments resulted in a significant increase in the available Fe, Mn, Zn and Cu contents in the surface layers. Moreover, amelioration processes have a highly significant effect on sorghum and barley yields. PG has a highly significant effect on the yield of both crops. These results may be attributed to that PG affected the soil properties such as porosity, ESP, pH and nutrients availability, which enhance plant growth. Regarding subsoiling and FYM, it could be noticed that subsoiling and FYM as well have a highly significant effect on the yield of both crops In addition, the uptake of the determined macronutrients (N, P, K) and micronutrients (Fe, Mn, Zn and Cu) were increased, while Na was decreased under the different amelioration processes. | ||
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