The Dynamic of the N-Turnover of Plant Residues in the Soil Using Nuclear Technique

Finally, there is a need to ddetermine N-turn-over rates of different quality residues and to increase the efficiency of nutrient cycling from residues through soil, and eventually to growing plants, with minimum loss from the system (Kumar, and Goh,2000).Recently, more attention had been paid twards the application of oranic farming approach and low agriculture concept, therfore this present study aims to : FTracing the effect of mineral composition of organic resdues on its decomposition rate. Studying the dynamic of organic-N transformations when incorporated into the soil in presence and absence of biological plant. The benefits from N-isotope dilution technique for accurate estimation of N-transformations under the given conditions.