NUTRITIONAL STATUS OF N AND P AS AFFECTED BY ADDING SOME ORGANIC MANURES AND ROCK PHOSPHATE IN BOTH SANDY AND CALCAREOUS SOILS | ||
| Journal of Soil Sciences and Agricultural Engineering | ||
| Article 4, Volume 32, Issue 6, June 2007, Pages 4977-4986 PDF (671.6 K) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jssae.2007.201299 | ||
| Authors | ||
| I. M. A. Hegazi; A. A. Afifi; G. A. Rashad | ||
| Soil, Water and Environment Institute,(ARC),Giza, Egypt | ||
| Abstract | ||
| The current work aims to study the effect of some applied organic manures namely: Qattamia, Biogreen and Nile compost at rates 2 & 4 %, added alone or in combination with rock phosphate at the rate of 0.02 % to sandy and calcareous soils on nutritional status of N & P during soil incubation experiment. The obtained results indicate that the application of organic manures either alone or in combination with rock phosphate increased the available content of N& P, with superiority of organic manures for increasing organic matter content in soils. The Nile compost at the rate of 4 % mixed with rock phosphate surpassed the other applied treatments for nutritional status of both N & P, in addition to it gave the greatest organic matter content. In all treatments the released of N and P increased in soil during the incubation period of the organic materials. It is also noticed that N and P released form the Nile compost treatment surpassed the other applied organic manures. | ||
| Keywords | ||
| Organic manures; N & P availability; sandy and calcareous soils | ||
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