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Pakistan Journal of Biological Sciences
  Year: 2006 | Volume: 9 | Issue: 13 | Page No.: 2426-2431
DOI: 10.3923/pjbs.2006.2426.2431
 
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Nutrients Dynamics in Komatsuna (Brassica campestris L.) Growing Soil Fertilized with Biogas Slurry and Chemical Fertilizer Using15N Isotope Dilution Method
Adel Ghoneim, Hideto Ueno and Azza Ebid

Abstract: Efficient liquid slurry land application requires knowledge of nutrient content, proper application rate and crop needs. An improved understanding of the cycling of biogas slurry N is a prerequisite for making better use of this N source. The efficiency of nitrogen (N) derived from biogas slurry must be determined to optimize use of N and reduce impact on the environment. Keeping in view, a pot experiment was initiated to estimate crop N uptake from biogas slurry and chemical fertilizer that applied to Komatsuna (Brassica campestris L.) using 15N isotope dilution method. In this experiment 180 kg N ha-1 of 1.0 atom % 15N excess ammonium chloride was used. Nitrogen derived from biogas slurry (Ndfs) and recovered-N (Nrfs) in Komatsuna was measured to know the effects of applied slurry on the performance of the crop and nutrient dynamics in a Brown Lowland Soil, Fluvisols west Japan. It was found out that 15N uptake was slightly higher in chemical fertilizer compared to slurry application. In addition, N uptake derived from chemical fertilizer (Ndfc) was better than that taken from soil (Ndfs). Fertilizer use efficiency (FUE-15N) was lower in slurry treatment (47.2%) than chemical fertilizer (65.9%). The relative efficiency (slurry use efficiency/chemical use efficiency *100) was varied in Komatsuna roots and leaves.
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How to cite this article:

Adel Ghoneim, Hideto Ueno and Azza Ebid , 2006. Nutrients Dynamics in Komatsuna (Brassica campestris L.) Growing Soil Fertilized with Biogas Slurry and Chemical Fertilizer Using15N Isotope Dilution Method. Pakistan Journal of Biological Sciences, 9: 2426-2431.

DOI: 10.3923/pjbs.2006.2426.2431

URL: https://scialert.net/abstract/?doi=pjbs.2006.2426.2431
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