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
	Year: 2006 \| Volume: 9 \| Issue: 13 \| Page No.: 2426-2431 DOI: 10.3923/pjbs.2006.2426.2431

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 (N_dfs) and recovered-N (N_rfs) 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 (N_dfc) was better than that taken from soil (N_dfs). 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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•	Indirect ¹⁵N Isotope Techniques for Estimating N Dynamics and N Uptake by Rice from Poultry Manure and Sewage Sludge

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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