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Potential denitrification rates of subsurface soil under paddy fields receiving ground water with high nitrate concentration; Konodo shosantai chisso gan`yu chikasui no ryunyusuru suiden kasodo ni okeru dacchitsu kassei

Journal Article:

Abstract

It is well known that the concentration of nitrate nitrogen in the surface water decreases as it flows downward in rice paddies irrigated with water high in nitrate nitrogen concentration. The decrease is attributed to absorption by rice plants and algae adherent thereto and denitrification in the reduction layer well developed in the rice paddy surface soil. In paddy fields downstream of the Kushibiki plateau in the northwestern part of Saitama Prefecture, it is occasionally observed that nitrate nitrogen concentration in the ground water decreases as it flows down (farther from the plateau) not only in the flooded period but also in the non-flooded period. This suggests that in the said paddy field denitrification takes place not only in the rice paddy surface layer soil but also in the lower layer soil. Under the circumstances, the denitrification rate in the rice paddy lower layer soil was measured using the acetylene inhibition method under anaerobic and added nitrate conditions. A denitrification rate of 0.4-46ngN/g{sup -1} wet soil/h{sup -1} was obtained from a 40-150cm deep layer soil, smaller by the order of 1-2 than that in the surface layer soil. This suggests that the lower layer soil contributes to denitrification. 17 refs.,  More>>
Authors:
Toda, H; [1]  Hidaka, S [2] 
  1. Shizuoka Agricultural Experiment Station, Shizuoka (Japan)
  2. Saitama Agricultural Experiment Station, Saitama (Japan)
Publication Date:
Feb 10, 1996
Product Type:
Journal Article
Reference Number:
SCA: 553006; 540320; 560162; PA: NEDO-96:911673; EDB-96:101506; SN: 96001610532
Resource Relation:
Journal Name: Mizu Kankyo Gakkaishi (Journal of Japan Society on Water Environment); Journal Volume: 19; Journal Issue: 2; Other Information: PBD: 10 Feb 1996
Subject:
55 BIOLOGY AND MEDICINE, BASIC STUDIES; 54 ENVIRONMENTAL SCIENCES; 56 BIOLOGY AND MEDICINE, APPLIED STUDIES; NITRATES; ORGANIC NITROGEN COMPOUNDS; SOILS; HYDROPONIC CULTURE; FARMS; SUBSURFACE STRUCTURES; DENITRIFICATION; CHEMICAL ACTIVATION; GROUND WATER; RUNOFF; IRRIGATION
OSTI ID:
247695
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: MKGAEY; ISSN 0916-8958; TRN: 96:911673
Submitting Site:
NEDO
Size:
pp. 84-89
Announcement Date:
Jul 13, 1996

Journal Article:

Citation Formats

Toda, H, and Hidaka, S. Potential denitrification rates of subsurface soil under paddy fields receiving ground water with high nitrate concentration; Konodo shosantai chisso gan`yu chikasui no ryunyusuru suiden kasodo ni okeru dacchitsu kassei. Japan: N. p., 1996. Web.
Toda, H, & Hidaka, S. Potential denitrification rates of subsurface soil under paddy fields receiving ground water with high nitrate concentration; Konodo shosantai chisso gan`yu chikasui no ryunyusuru suiden kasodo ni okeru dacchitsu kassei. Japan.
Toda, H, and Hidaka, S. 1996. "Potential denitrification rates of subsurface soil under paddy fields receiving ground water with high nitrate concentration; Konodo shosantai chisso gan`yu chikasui no ryunyusuru suiden kasodo ni okeru dacchitsu kassei." Japan.
@misc{etde_247695,
title = {Potential denitrification rates of subsurface soil under paddy fields receiving ground water with high nitrate concentration; Konodo shosantai chisso gan`yu chikasui no ryunyusuru suiden kasodo ni okeru dacchitsu kassei}
author = {Toda, H, and Hidaka, S}
abstractNote = {It is well known that the concentration of nitrate nitrogen in the surface water decreases as it flows downward in rice paddies irrigated with water high in nitrate nitrogen concentration. The decrease is attributed to absorption by rice plants and algae adherent thereto and denitrification in the reduction layer well developed in the rice paddy surface soil. In paddy fields downstream of the Kushibiki plateau in the northwestern part of Saitama Prefecture, it is occasionally observed that nitrate nitrogen concentration in the ground water decreases as it flows down (farther from the plateau) not only in the flooded period but also in the non-flooded period. This suggests that in the said paddy field denitrification takes place not only in the rice paddy surface layer soil but also in the lower layer soil. Under the circumstances, the denitrification rate in the rice paddy lower layer soil was measured using the acetylene inhibition method under anaerobic and added nitrate conditions. A denitrification rate of 0.4-46ngN/g{sup -1} wet soil/h{sup -1} was obtained from a 40-150cm deep layer soil, smaller by the order of 1-2 than that in the surface layer soil. This suggests that the lower layer soil contributes to denitrification. 17 refs., 3 figs., 1 tab.}
journal = {Mizu Kankyo Gakkaishi (Journal of Japan Society on Water Environment)}
issue = {2}
volume = {19}
journal type = {AC}
place = {Japan}
year = {1996}
month = {Feb}
}