Addition of cations to urea does not necessarily reduce n volatilization losses

Tan Lei Hong, . and Petronella G. Ah Tung, . (2005) Addition of cations to urea does not necessarily reduce n volatilization losses. [Proceedings Paper]

This paper investigates the ammonia volatilization losses of a urea-based compound fertilizer as compared to urea fertilizer under laboratory conditions. Ammonia volatilization losses of surface applied fertilizer on Rengam series soil are determined by measuring the residual total N in the soil and deducting it from the initial N added Chan 1986. The mean percentage N loss between the urea -based compound 16.2 and urea fertilizer 9.4 was found to be significantly different. The higher N loss in the urea-based compound fertilizer was probably caused by the presence of highly reactive phosphate rock PR and EMag in the fertilizer which increased soil pH. There was however no significant difference in the mean percentage N loss between 227 ppm mg N/kg soil and 455 ppm mg N/kg soil fertilizer rates with 11.9 and 13.7 N losses respectively. However there was a significant difference in percentage N loss at day 3 7 and 15 between the two rates where higher N rate increased N volatilization.

Full text available from: Official URL: http://myagric.upm.edu.my/id/eprint/16109

Abstract

This paper investigates the ammonia volatilization losses of a urea-based compound fertilizer as compared to urea fertilizer under laboratory conditions. Ammonia volatilization losses of surface applied fertilizer on Rengam series soil are determined by measuring the residual total N in the soil and deducting it from the initial N added Chan 1986. The mean percentage N loss between the urea -based compound 16.2 and urea fertilizer 9.4 was found to be significantly different. The higher N loss in the urea-based compound fertilizer was probably caused by the presence of highly reactive phosphate rock PR and EMag in the fertilizer which increased soil pH. There was however no significant difference in the mean percentage N loss between 227 ppm mg N/kg soil and 455 ppm mg N/kg soil fertilizer rates with 11.9 and 13.7 N losses respectively. However there was a significant difference in percentage N loss at day 3 7 and 15 between the two rates where higher N rate increased N volatilization.

[error in script]

Item Type:	Proceedings Paper
AGROVOC Term:	Urea
AGROVOC Term:	Volatilization
AGROVOC Term:	Ammonia
AGROVOC Term:	Laboratory experimentation
AGROVOC Term:	Experiments
AGROVOC Term:	Soil analysis
AGROVOC Term:	Data analysis
AGROVOC Term:	Fertilizer application
AGROVOC Term:	Kjeldahl method
AGROVOC Term:	Moisture content
Geographical Term:	MALAYSIA
Depositing User:	Ms. Suzila Mohamad Kasim
Last Modified:	24 Apr 2025 05:16
URI:	http://webagris.upm.edu.my/id/eprint/13420

Actions (login required)

View Item