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2955

Impact of Nitrogen Fertilization on Soil Organic Carbon Decomposition

Article

Last updated: 01 Jan 2025

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Soil science

Abstract

A field study was conducted at The Experimental Farm, Fac. of Agric., Al-Azahar University, Assuit, located
375 km south of Cairo, Egypt (27° 12- 16.67= N latitude and 31° 09- 36.86= E longitude) through wheat growing season 2015. The aim of current study is to asses the effect of nitrogen fertilizer types (urea and ureaform) at different levels on soil organic carbon decomposition.
Soil organic carbon decomposition percentage (SOCD) is at a minimum amount in the 2nd week and at a
maximum amount in the 7th week at the recommended urea level - 15% (R-15%). The biweekly SOCD % varied from 0.82 and 9.55 % at 70 kg N/fed level (R-30%).
SOCD% ranged between 0.16- 12.73, 5.14- 10.61 and 0.41- 8.78% for ureaform level at (R-15%) and (R-30%) less than the recommended one (R), respectively. The amount of soil CO2 flux from recommended ureaform level treatment was the highest one during the entire growing season. Overall, SOCD% followed the order of R > R-15% > R-30%. The highest values of SOCD % were 8.4 and 8.2 at 2.4 Q10 value with urea and at 2.7 Q10 value with ureaform, respectively. The lowest values of SOCD % were 2.3 and 4.4 at 2.2 Q10 value with urea or ureaform, respectively. Soil C: N raties under all treatments were higher than that of initial state except that under R-30% of urea. The soil C: N ratio was higher at R-15% of urea than that when soil treated by ureaform. The opposite trend is true at R-30%.

DOI

10.21608/asejaiqjsae.2015.2955

Keywords

nitrogen fertilizer, Soil carbon decomposition, C: N ratio, Temperature sensitivity, wheat crop

Authors

First Name

Mostafa Y.

Last Name

Khalafalla

MiddleName

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Affiliation

Soils & water Dept., Fac. Agric., Al-Azhar Univ., Assuit, Egypt.

Email

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City

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Orcid

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First Name

Mahdy H.

Last Name

Hamed

MiddleName

-

Affiliation

Soils & water Dept., Fac. Agric., Assuit Univ., New Valley, Egypt.

Email

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City

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Orcid

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Volume

36

Article Issue

OCTOBER- DECEMBER

Related Issue

531

Issue Date

2015-12-01

Receive Date

2015-11-18

Publish Date

2015-12-30

Page Start

381

Page End

389

Print ISSN

1110-0176

Online ISSN

2536-9784

Article File

ASEJAIQJSAE_Volume 36_Issue OCTOBER- DECEMBER_Pages 381-389.pdf

PDF . 211.5kB

Link

https://asejaiqjsae.journals.ekb.eg/article_2955.html

Detail API

https://asejaiqjsae.journals.ekb.eg/service?article_code=2955

Order

11

Type

Original Article

Type Code

53

Publication Type

Journal

Publication Title

Alexandria Science Exchange Journal

Publication Link

https://asejaiqjsae.journals.ekb.eg/

MainTitle

Impact of Nitrogen Fertilization on Soil Organic Carbon Decomposition

Details

Type

Article

Created At

22 Jan 2023