Effect of liming and fertilizer application on mineralization of nitrogen in hemic and sapric of tropical peat material

Ameera Abdul Reeza, . Effect of liming and fertilizer application on mineralization of nitrogen in hemic and sapric of tropical peat material. pp. 779-790. ISSN 1511-3701

This study was conducted to investigate the effect of liming and fertilizer application on mineralization of nitrogen in hemic and sapric peat material of Tropical Histosols. The peat materials were left to decompose aerobically for 8 weeks under laboratory incubation and samples were taken for extractable ammonium at every 1 week interval. The trends in nitrogen mineralization were found to be similar between hemic and sapric peat materials for all treatments; however the rate and amount of ammonium release differed. The application of lime increased the pH of the peat material from around 3.7 to a pH of about 6.0 but no significant differences were found in the amount of NH4 at 8 weeks of incubation between treatments with and without liming material in hemic and sapric peat material respectively. Fertilizer application significantly increased NH4 in both peat materials where NH4 in hemic material was significantly higher (23.85 g/kg) compared to sapric (16.48 g/kg) peat material. This study showed that the practice of liming to increase soil pH did not necessarily improve the mineralization of nitrogen in Hemic and Sapric peat therefore was not prerequisite unless the crops to be planted are intolerant to acidity.

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Abstract

This study was conducted to investigate the effect of liming and fertilizer application on mineralization of nitrogen in hemic and sapric peat material of Tropical Histosols. The peat materials were left to decompose aerobically for 8 weeks under laboratory incubation and samples were taken for extractable ammonium at every 1 week interval. The trends in nitrogen mineralization were found to be similar between hemic and sapric peat materials for all treatments; however the rate and amount of ammonium release differed. The application of lime increased the pH of the peat material from around 3.7 to a pH of about 6.0 but no significant differences were found in the amount of NH4 at 8 weeks of incubation between treatments with and without liming material in hemic and sapric peat material respectively. Fertilizer application significantly increased NH4 in both peat materials where NH4 in hemic material was significantly higher (23.85 g/kg) compared to sapric (16.48 g/kg) peat material. This study showed that the practice of liming to increase soil pH did not necessarily improve the mineralization of nitrogen in Hemic and Sapric peat therefore was not prerequisite unless the crops to be planted are intolerant to acidity.

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Item Type:	Article
AGROVOC Term:	Peat
AGROVOC Term:	Peat soils
AGROVOC Term:	Liming
AGROVOC Term:	Fertilizer application
AGROVOC Term:	Nitrogen mineralization
AGROVOC Term:	Laboratory experimentation
AGROVOC Term:	Physical properties
AGROVOC Term:	Soil physicochemical properties
AGROVOC Term:	Nutrient availability (soil)
Depositing User:	Mr. AFANDI ABDUL MALEK
Last Modified:	24 Apr 2025 00:54
URI:	http://webagris.upm.edu.my/id/eprint/8166

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