World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
53
Citations
17630
World Ranking
1752
National Ranking
134

Research.com Recognitions

  • 1991 - Fellow of the American Society of Agronomy (ASA)
  • 1984 - Fellow of the Soil Science Society of America (SSSA)

Overview

What is he best known for?

The fields of study he is best known for:

  • Agriculture
  • Ecology
  • Fertilizer

J. R. Freney mainly investigates Agronomy, Agriculture, Ammonia volatilization from urea, Nitrous oxide and Soil organic matter. The Agronomy study combines topics in areas such as Denitrification, Soil water and Plant nutrition. The various areas that he examines in his Agriculture study include Nitrogen cycle, Greenhouse gas and Environmental protection.

His Environmental protection research is multidisciplinary, incorporating elements of Ecology, Ecosystem, Human impact on the nitrogen cycle and Nitrification inhibitors. His Ammonia volatilization from urea study is concerned with the larger field of Ammonia. His studies in Nitrous oxide integrate themes in fields like Environmental chemistry and Environmental engineering.

His most cited work include:

  • Transformation of the Nitrogen Cycle: Recent Trends, Questions, and Potential Solutions (3648 citations)
  • Regional nitrogen budgets and riverine N & P fluxes for the drainages to the North Atlantic Ocean: Natural and human influences (1383 citations)
  • Global estimates of potential mitigation of greenhouse gas emissions by agriculture (356 citations)

What are the main themes of his work throughout his whole career to date?

J. R. Freney focuses on Agronomy, Denitrification, Urea, Ammonia and Ammonia volatilization from urea. His study in Agronomy is interdisciplinary in nature, drawing from both Agriculture, Soil water, Leaching and Nitrogen cycle. His work carried out in the field of Agriculture brings together such families of science as Agroforestry, Ecosystem, Greenhouse gas and Environmental protection.

His work deals with themes such as Nitrate, Nitrification, Soil health and Nitrogen balance, which intersect with Denitrification. The Ammonia study which covers Environmental chemistry that intersects with Nitrous oxide and Mineralization. In his study, Botany is inextricably linked to Urease, which falls within the broad field of Ammonia volatilization from urea.

He most often published in these fields:

  • Agronomy (62.04%)
  • Denitrification (40.74%)
  • Urea (36.11%)

What were the highlights of his more recent work (between 2003-2015)?

  • Agronomy (62.04%)
  • Agriculture (16.67%)
  • Ammonia volatilization from urea (32.41%)

In recent papers he was focusing on the following fields of study:

His primary scientific interests are in Agronomy, Agriculture, Ammonia volatilization from urea, Denitrification and Fertilizer. J. R. Freney has included themes like Urea, Nutrient and Leaching in his Agronomy study. He has researched Agriculture in several fields, including Agroforestry, Ecosystem and Nitrogen cycle.

His Ecosystem study combines topics from a wide range of disciplines, such as Environmental protection, Cover crop, Organic farming, Reactive nitrogen and Biogeochemistry. J. R. Freney conducts interdisciplinary study in the fields of Nitrogen cycle and Food processing through his works. His biological study spans a wide range of topics, including Soil organic matter, Soil health and Nitrification.

Between 2003 and 2015, his most popular works were:

  • Transformation of the Nitrogen Cycle: Recent Trends, Questions, and Potential Solutions (3648 citations)
  • Prospects of improving efficiency of fertiliser nitrogen in Australian agriculture: a review of enhanced efficiency fertilisers (202 citations)
  • Prospects of improving efficiency of fertiliser nitrogen in Australian agriculture: a review of enhanced efficiency fertilisers (202 citations)

In his most recent research, the most cited papers focused on:

  • Agriculture
  • Ecology
  • Fertilizer

J. R. Freney mainly focuses on Agronomy, Agriculture, Ammonia volatilization from urea, Nitrogen cycle and Agroforestry. His Agronomy study integrates concerns from other disciplines, such as Urea, Urease, Deposition and Animal science. His research integrates issues of Soil organic matter, Soil health, Land management, Denitrification and Nutrient in his study of Ammonia volatilization from urea.

His work on Human impact on the nitrogen cycle as part of general Nitrogen cycle study is frequently linked to Food processing and Industrial production, therefore connecting diverse disciplines of science. His Food processing study spans across into areas like Fiber, Production, Environmental protection, Reactive nitrogen and Ecosystem. His work in Agroforestry addresses issues such as Nitrogen fertilizer, which are connected to fields such as Crop yield, Crop production and Precision agriculture.

Best Publications

  • Transformation of the Nitrogen Cycle: Recent Trends, Questions, and Potential Solutions

    James N. Galloway;Alan R. Townsend;Jan Willem Erisman;Mateete Bekunda

  • Global estimates of potential mitigation of greenhouse gas emissions by agriculture

    C.V. Cole;J. Duxbury;J. Freney;O. Heinemeyer

  • Nitrous oxide emissions from agricultural fields: Assessment, measurement and mitigation

    A. R. Mosier;J. M. Duxbury;J. R. Freney;Otto Heinemeyer

  • Prospects of improving efficiency of fertiliser nitrogen in Australian agriculture: a review of enhanced efficiency fertilisers

    D. Chen;H. Suter;A. Islam;R. Edis

  • Agricultural options for mitigation of greenhouse gas emissions

    V. Cole;C. Cerri;K. Minami;A. Mosier

  • Volatilization of ammonia

    J. R. Freney;J. R. Simpson;O. T. Denmead

  • Assessing and mitigating N2O emissions from agricultural soils

    A.R. Mosier;J.M. Duxbury;J.R. Freney;O. Heinemeyer

  • Mitigating Agricultural Emissions of Methane

    A.R. Mosier;J.M. Duxbury;J.R. Freney;O. Heinemeyer

  • Policy implications of human-accelerated nitrogen cycling

    Arvin R. Mosier;Marina Azzaroli Bleken;Pornpimol Chaiwanakupt;Erle C. Ellis

  • Dynamics of Ammonia Volatilization during Furrow Irrigation of Maize

    O. T. Denmead;J. R. Freney;J. R. Simpson

  • Ammonia, methane, and nitrous oxide emission from pig slurry applied to a pasture in New Zealand

    Robert R. Sherlock;Sven G. Sommer;Rehmat Z. Khan;C. Wesley Wood

  • A Direct Field Measurement of Ammonia Emission After Injection of Anhydrous Ammonia

    O. T. Denmead;J. R. Simpson;J. R. Freney

  • Soil organic matter fractions as sources of plant-available sulphur

    J.R. Freney;G.E. Melville;C.H. Williams

  • Emission of nitrous oxide from soils used for agriculture

    J.R. Freney

  • Nitrogen in soils of China.

    Zhu ZhaoLiang;Wen QiXiao;J. R. Freney

  • Ammonia and Nitrous Oxide Losses Following Applications of Ammonium Sulfate to Flooded Rice

    JR Freney;OT Denmead;I Watanabe;ET Craswell

  • Sulfur and nitrogen fertilizer effects on wheat. I. Concentrations of sulfur and nitrogen and the nitrogen to sulfur ratio in grain, in relation to the yield response

    PJ Randall;K Spencer;JR Freney

  • The interdependence of ammonia volatilization and denitrification as nitrogen loss processes in flooded rice fields in the Philippines.

    J. R. Freney;A. C. F. Trevitt;S. K. De Datta;W. N. Obcemea

  • Estimating ammonia volatilization from flooded rice fields by simplified techniques

    J. R. Freney;R. Leuning;J. R. Simpson;O. T. Denmead

  • Nitrous oxide emission from soils at low moisture contents

    J.R. Freney;O.T. Denmead;J.R. Simpson

  • Factors controlling ammonia loss from trash covered sugarcane fields fertilized with urea

    J. R. Freney;O. T. Denmead;A. W. Wood;P. G. Saffigna

  • Soil as a source or sink for atmospheric nitrous oxide

    J. R. Freney;O. T. Denmead;J. R. Simpson

  • Effect of fertilizer placement on nitrogen loss from sugarcane in tropical Queensland

    P. Prasertsak;J. R. Freney;O. T. Denmead;P. G. Saffigna

  • Measuring Nitrogen Losses from Lowland Rice Using Bulk Aerodynamic and Nitrogen-15 Balance Methods

    S. K. De Datta;W. N. Obcemea;J. G. Real;A. C. F. Trevitt

  • Organic sulphur fractions labelled by addition of 35S-sulphate to soil

    J.R. Freney;G.E. Melville;C.H. Williams

  • Nitrogen loss from ammonium bicarbonate and urea fertilizers applied to flooded rice

    Gui-Xin Cai;Zhao-Liang Zhu;Acf Trevitt;JR Freney

  • Nitrous Oxide Emission During Denitrification in a Flooded Field1

    O. T. Denmead;J. R. Freney;J. R. Simpson

  • Effect of wax-coated calcium carbide and nitrapyrin on nitrogen loss and methane emission from dry-seeded flooded rice

    D. G. Keerthisinghe;J. R. Freney;A. R. Mosier

  • Effect of a new nitrification inhibitor (wax coated calcium carbide) on transformations and recovery of fertilizer nitrogen by irrigated wheat

    J. R. Freney;C. J. Smith;A. R. Mosier

  • Strategies to reduce gaseous emissions of nitrogen from irrigated agriculture

    J.R. Freney

Frequent Co-Authors

Arvin R. Mosier
Arvin R. Mosier University of Melbourne
O. T. Denmead
O. T. Denmead Commonwealth Scientific and Industrial Research Organisation
Deli Chen
Deli Chen University of Melbourne
Ian E. Galbally
Ian E. Galbally Commonwealth Scientific and Industrial Research Organisation
Ray Leuning
Ray Leuning CSIRO Marine and Atmospheric Research
S. K. De Datta
S. K. De Datta Virginia Tech
Keith Paustian
Keith Paustian Colorado State University
Keith C. Cameron
Keith C. Cameron Lincoln University
Kazuyuki Yagi
Kazuyuki Yagi National Agriculture and Food Research Organization
Robert R. Sherlock
Robert R. Sherlock Lincoln University

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