Decomposition and nutrient release from maize Zea mays L. residue and N uptake by groundnut Arachis hypogen

Norhayati A., . and Rosenani Abu Bakar, . and Mubarak A.R., . and Siti Zauyah Darus, . and Anuar Abdul Rahim, . (1998) Decomposition and nutrient release from maize Zea mays L. residue and N uptake by groundnut Arachis hypogen. [Proceedings Paper]

Incorporation of crop residue in agricultural system is an important factor in the control of soil fertility and nutrient cycling and may contribute significant amounts of nitrogen to the main crop. Decomposition of maize residue with or without chicken dung and nutrient release N P K Ca and Mgwere studied during the follow and growth period of groundnut. Dry matter weight loss DMWL was fast in the initial two weeks. Generally decomposition was best described using the single exponential model with rate constants k of 0.1012 square r 0.95 and 0.106 square r 0.92 week E-1 with 50 DMWL at 6.1 abd 5.9 weeks from residue and residue with chicken dung respectively. Nutrient release was in the order of fast to slow KNPMgCa. Residue incorporation slightly increased fresh pods yield and significantly increased N uptake. Groundnut growth curve showed a period of active growth measured in terms of dry matter and N accumulation to be confined to the period between 3rd and 9th weeks after sowing. Total soil mineral nitrogen NH subscript 4 -N and NO subscript 3- -Nafter residue decomposition showed maximum accumulation 65ug/g in the top 00-20 cm at the 8th week. These results indicate a great potential for synchrony between N release and uptake.

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Abstract

Incorporation of crop residue in agricultural system is an important factor in the control of soil fertility and nutrient cycling and may contribute significant amounts of nitrogen to the main crop. Decomposition of maize residue with or without chicken dung and nutrient release N P K Ca and Mgwere studied during the follow and growth period of groundnut. Dry matter weight loss DMWL was fast in the initial two weeks. Generally decomposition was best described using the single exponential model with rate constants k of 0.1012 square r 0.95 and 0.106 square r 0.92 week E-1 with 50 DMWL at 6.1 abd 5.9 weeks from residue and residue with chicken dung respectively. Nutrient release was in the order of fast to slow KNPMgCa. Residue incorporation slightly increased fresh pods yield and significantly increased N uptake. Groundnut growth curve showed a period of active growth measured in terms of dry matter and N accumulation to be confined to the period between 3rd and 9th weeks after sowing. Total soil mineral nitrogen NH subscript 4 -N and NO subscript 3- -Nafter residue decomposition showed maximum accumulation 65ug/g in the top 00-20 cm at the 8th week. These results indicate a great potential for synchrony between N release and uptake.

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Item Type:	Proceedings Paper
AGROVOC Term:	DEGRADATION
AGROVOC Term:	NUTRIENT UPTAKE
AGROVOC Term:	MAIZE
AGROVOC Term:	GROUNDNUTS
AGROVOC Term:	CROP RESIDUES
AGROVOC Term:	SOIL
AGROVOC Term:	FIELD EXPERIMENTATION
AGROVOC Term:	STATISTICAL METHODS
AGROVOC Term:	CYCLING
AGROVOC Term:	SOIL FERTILITY
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:27
URI:	http://webagris.upm.edu.my/id/eprint/16262

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