eprintid: 4884
rev_number: 16
eprint_status: archive
userid: 14
dir: disk0/00/00/48/84
datestamp: 2011-12-11 06:01:57
lastmod: 2011-12-11 06:01:57
status_changed: 2011-12-11 06:01:57
type: article
metadata_visibility: show
contact_email: Library-ICRISAT@cgiar.org
creators_name: Sahrawat, K L
creators_name: Keeney, D R
creators_name: Adams, S S
icrisatcreators_name: Sahrawat, K L
icrisatcreators_name: Keeney, D R
icrisatcreators_name: Adams, S S
affiliation: ICRISAT(Patancheru)
country: India
title: Rate of aerobic nitrogen transformations in six acid climax forest soils and the effect of phosphorus and CaCO3
ispublished: pub
subjects: s2.11
subjects: s2.5
full_text_status: restricted
keywords: Ammonification; nitrification; forest ecosystems; phosphorus; CaCO3; N2O emission 

abstract: Nitrogen transformations (mineralization, nitrification, and nitrous oxide production) were evaluated in acid forest floor soils collected from six climax forest sites on Blackhawk Island, Wisconsin. Soils' acidity (CaCl2) ranged from pH 3.9 to 5.1, and organic matter concentrations varied from 2.4 to 59.0 percent. The samples were incubated aerobically for 4 weeks at 30°C under field moist conditions. Treatments were: control; 100 mg P (as KH2P04) kg-1 soil; CaCOa; and P with CaC03.
Nitrification of mineralized N ranged from nearly complete in the SM Alfisol to almost nonexistent in the Histosol. Addition of P had little effect on ammonification or nitrification. Liming, however, greatly enhanced ammonification on nonnitrifying or slowly nitrifying soils and both ammonification and nitrification in nitrifying soils. Adding P and lime together did not affect N transformations compared to liming alone. Nitrous oxide emission rates in the soils were related to nitrification. From 0.03 to 0.3 percent of the NH4-N nitrified was released as NzO-N. Phosphorus addition had little effect but liming increased N20 emission rates in soils where nitrification was also enhanced.
date: 1985
date_type: published
publication: Forest Science
volume: 31
number: 3
publisher: Society of American Foresters
pagerange: 680-684
refereed: TRUE
issn: 0015-749X
official_url: http://saf.publisher.ingentaconnect.com/content/saf/fs/1985/00000031/00000003/art00019
related_url_url: http://scholar.google.co.in/scholar?as_q=Rate+of+aerobic+nitrogen+transformations+in+six+acid+climax+forest+soils+and+the+effect+of+phosphorus+and+CaCO3&num=10&btnG=Search+Scholar&as_epq=&as_oq=&as_eq=&as_occt=title&as_sauthors=&as_publication=&as_ylo=&as
related_url_type: author
citation:   Sahrawat, K L and Keeney, D R and Adams, S S  (1985) Rate of aerobic nitrogen transformations in six acid climax forest soils and the effect of phosphorus and CaCO3.  Forest Science, 31 (3).  pp. 680-684.  ISSN 0015-749X     
document_url: http://oar.icrisat.org/4884/1/Rate%20of%20aerobic%20nitrogen%20transformations%20in%20six%20acid%20climax%20forest%20soils%20and%20the%20effect%20of%20phosphorus%20and%20CaCO3.pdf