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Soil warming and liming impacts on the recovery of 15N in an acidic soil under soybean cropping

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Liming has important implications for N dynamics in acidic soils planted with legumes that are
not fully understood. We used a 15N tracer (K15NO3) to examine N dynamics in a Chromic Luvisol
planted with soybean with and without lime in environmentally-controlled chambers set at 20°C
and 30°C (full factorial design). Liming increased total N and 15N recovery in soybean, but had
no effect on microbial recovery. Elevated temperature, increased total plant N, decreased 15N
recovery in soybean and microbes, and increased loss of N through leaching. Our results show
enhanced uptake of soil mineral N by soybean with liming, thereby reducing N loss from soil,
while an increase in temperature from 20°C to 30°C may enhance N loss in these systems.

Key words: 15N tracer / liming / soybean / organic and inorganic N dynamics / temperature / acidic soil

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Informasi Detail

Judul Seri

J. Plant Nutr. Soil Sci.

No. Panggil

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Penerbit

New York : WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim., 2016

Deskripsi Fisik

J. Plant Nutr. Soil Sci. 2016, 179, 193–197

Bahasa

English

ISBN/ISSN

DOI: 10.1002/jpln.20

Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

2016, 179

Subjek

PERTANIAN.

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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