Phosphorus Availability in Calcareous Soil Amend with Chemical Phosphorus Fertilizer, Cattle Manure Compost and Sludge Manure

K.M. Al- Rohily, A. M. Ghoneim, A. S. Modaihsh and M. O. Mahjoub

International Journal of Soil Science 8 ( 1 ): 17 - 24 , 2013