Japan International Research Center for Agricultural Sciences | JIRCAS

Heavy Metal Loads Accompanying Rainfall Runoff on Low Farmland around Ariake Bay

Japan Agricultural Research Quarterly
ISSN
00213551
NII recode ID (NCID)
AA0068709X
Full text

Discharges of zinc, arsenic, cadmium, and lead from farmland were examined based on field measurements conducted between June 15 and July 13, 2006. The study fields are located in a lowland area where the irrigation water was contaminated with water drained from upstream farmlands (cyclic irrigation). The area of the farmland is 11.2 ha, of which 7.6 ha and 3.6 ha had been used for rice and soybeans, respectively. Heavy metal loads accompanying the rainfall runoff were considered to become higher with the increase in rainfall. Seventy percent of the zinc load, 62% of the arsenic load, 70% of the cadmium load, and 69% of the lead load were discharged with the rainfall runoff even though the rainfall runoff time was only 21% of the observation period.

Date of issued2008-10-01
CreatorHAMADA KojiYOSHINAGA IkuoHITOMI TadayoshiMIURA AsaTAKAKI Kyoji
Subject

creek canal

cyclic irrigation

PublisherJapan International Research Center for Agricultural Sciences
Dates2008-10-01
NII resource type vocabularyJournal Article
Volume42
Issue4
spage275
epage283
DOI10.6090/jarq.42.275
RightsJapan International Research Center for Agricultural Sciences
Languageeng