Effect of Difference in Fumigation Period on the Accumulation of Ninhydrin-Reactive Compounds in Japanese Andosols

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概要

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• Since ninhydrin-reactive nitrogen (NRN) reacts with a small fraction of the total amount of soluble organic N such as α-amino compounds (amino acids peptides, and proteins) and also ammonium, it is an appropriate reagent for the determination of soil microbial biomass. Further studies on the ninhydrin-based assays are, however, required to elucidate the mechanism of NRN autolysis in different soils. In the present study, we investigated the relationships between biomass N (B_N) and NRN after 24 h and 240 h of CHCI_3 fumigation in a range of Japanese Andosol Soils. Our results showed that 240 h fumigation provided 1.9 times more NRN (n = 11), which mostly consisted of NH_4^+-N. The relationships: B_N = 4.31 × NRN and B_N = 2.01 × NRN are considered to be appropriate for 24 h and 240 h fumigations, respectively.

• 社団法人日本土壌肥料学会の論文

著者

• Can Turgay

  Faculty Of Agriculture Niigata University

• Nonaka Masanori

  Faculty Of Agriculture Niigata University

• Oguz Can

  Faculty of Agriculture, Niigata University

関連論文

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• Effect of Difference in Fumigation Period on the Accumulation of Ninhydrin-Reactive Compounds in Japanese Andosols
• Consequences of Microbial Pyrite Oxidation in Acid Sulfate Soils
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