Dennis Keeney
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American agronomist
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Why Is Dennis Keeney Influential?
(Suggest an Edit or Addition)According to Wikipedia, Dennis R. Keeney is an American scientist in soil science and water chemistry. He was the first director of the Leopold Center for Sustainable Agriculture in Ames, Iowa. Early life and education Keeney grew up on his family's dairy farm near Runnells, Iowa not far from Des Moines.
Dennis Keeney's Published Works
Number of citations in a given year to any of this author's works
Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author
Published Works
- Chemical and microbiological properties (1982) (2832)
- Steam distillation methods for determination of ammonium, nitrate and nitrite (1965) (1001)
- Nitrogen—Inorganic Forms (2015) (804)
- Determination and Isotope-Ratio Analysis of Different Forms of Nitrogen in Soils: 3. Exchangeable Ammonium, Nitrate, and Nitrite by Extraction-Distillation Methods1 (1966) (676)
- Flux and Sources of Nutrients in the Mississippi-Atchafalaya River Basin (1999) (558)
- Human health effects of a changing global nitrogen cycle (2003) (481)
- Comparison and Evaluation of Laboratory Methods of Obtaining an Index of Soil Nitrogen Availability1 (1966) (377)
- Sustainable Development of the Agricultural Bio-Economy (2007) (284)
- Nitrogen Management for Maximum Efficiency and Minimum Pollution (1982) (271)
- A National Perspective (1991) (270)
- Prediction of soil nitrogen availability in forest ecosystems: a literature review. (1980) (259)
- Nitrous Oxide Emission from Soils (1986) (244)
- Nitrous oxide production in aerobic soils under varying pH, temperature and water content (1984) (192)
- The Nitrogen Cycle in Sediment-Water Systems (1973) (189)
- Sources of Nitrate to Ground Water (1986) (185)
- Effect of freeze-thaw events on mineralization of soil nitrogen (1992) (182)
- Effect of Temperature on the Gaseous Nitrogen Products of Denitrification in a Silt Loam Soil1 (1979) (178)
- Nitrogen Balance in Urine‐affected Areas of a New Zealand Pasture1 (1979) (176)
- Nitrous Oxide Emission from Forest, Marsh, and Prairie Ecosystems (1984) (164)
- Potentiometric titration of chloride in plant tissue extracts using the chloride ion electrode. (1970) (160)
- Nitrogen—Availability Indices (2015) (159)
- Arsenic Sorption by Soils (1970) (154)
- NITROUS OXIDE EMISSIONS FROM SOILS DURING THAWING (1984) (150)
- Cycling of nitrogen by surface-casting earthworms in a pasture ecosystem (1979) (140)
- Nitrogen nutrition of Myriophyllum spicatum: uptake and translocation of 15N by shoots and roots (1976) (136)
- Des Moines River Nitrate in Relation to Watershed Agricultural Practices: 1945 Versus 1980s (1993) (130)
- Evaluation of Various Extractants for Available Soil Sulfur1 (1973) (121)
- Nitrous Oxide Production throughout the Year from Fertilized and Manured Maize Fields (1987) (121)
- Inhibition of Nitrification by Acetylene 1 (1979) (111)
- Non‐Uniform Infiltration Under Potato Canopies Caused by Interception, Stemflow, and Hilling1 (1976) (104)
- Effect of Cultivation on the Nitrogen Distribution in Soils 1 (1964) (103)
- A Chemical Index of Soil Nitrogen Availability (1966) (101)
- Nitrous oxide production from injected liquid dairy manure. (1990) (99)
- Effect of pH on the rate of gaseous products of denitrification in a silt loam soil (1982) (94)
- Nitrate and Chloride in Ground Water Under Irrigated Agriculture in Central Wisconsina (1977) (92)
- Yield and Metal Composition of Corn and Rye Grown on Sewage Sludge-Amended Soil 1 (1975) (91)
- Nitrogen, Chloride, and Water Balance with Irrigated Russet Burbank Potatoes in a Sandy Soil1 (1977) (88)
- Occurrence and distribution of arsenic in soils and plants (1977) (85)
- Factors Influencing Corn Fertilizer N Requirements in the Northern U.S. Corn Belt (1990) (84)
- Behavior and phytotoxicity of inorganic arsenicals in soils (1975) (84)
- Biological Reclamation of Solid Wastes (1977) (80)
- Challenges for the 21st Century. (1994) (79)
- Importance of Denitrification and Nitrate Reduction in Sediments to the Nitrogen Budgets of Lakes (1971) (79)
- A Field Study of the Agricultural Use of Sewage Sludge: III. Effect on Uptake and Extractability of Sludge-Borne Metals (1977) (79)
- Nitrogen Transformations During Subsurface Disposal of Septic Tank Effluent in Sands: I. Soil Transformations (1973) (78)
- Use of variations in natural nitrogen isotope abundance for environmental studies: a questionable approach. (1972) (77)
- Biomass as an energy source for the midwestern U.S. (1992) (76)
- Soil nitrogen mineralization as affected by water and temperature interactions (1987) (72)
- Phytotoxicity and Uptake of Metals Added to Soils as Inorganic Salts or in Sewage Sludge (1975) (71)
- Nitrogen Transformations and Availability of an Anaerobically Digested Sewage Sludge in Soil 1 (1973) (69)
- A Field Study of the Agricultural Use of Sewage Sludge: II. Effect on Soil N and P (1977) (69)
- Nitrous oxide emissions from agricultural soils in Wisconsin (1984) (68)
- Phytotoxicity in and Metal Uptake from Soil Treated with Metal-Amended Sewage Sludge 1 (1975) (68)
- Factors Affecting the Persistence and Bioactivity of Nitrification Inhibitors (1980) (66)
- Denitrification and Nitrate Reduction in Wisconsin Lake Sediments 1 (1972) (66)
- The fate of nitrogen from injected liquid manure in a silt loam soil (1988) (65)
- Soluble anthrone-reactive carbon in soils: effect of carbon and nitrogen amendments. (1993) (65)
- Arsenic residue toxicity to vegetable crops grown on plainfield sand. (1970) (64)
- Toward a sustainable agriculture: Need for clarification of concepts and terminology (1989) (64)
- Nitrogen nutrition of Myriophyllum spicatum: variation of plant tissue nitrogen concentration with season and site in Lake Wingra (1976) (64)
- Concentration of heavy metals in sediment cores from selected Wisconsin lakes (1974) (63)
- Soluble carbon and nitrogen pools of prairie and cultivated soils : seasonal variation (1994) (62)
- Terrestrial Nitrogen Cycles Processes, Ecosystem Strategies and Management Impacts (1982) (61)
- SOLUBLE ORGANICS AND EXTRACTABLE NITROGEN IN PAIRED PRAIRIE AND CULTIVATED SOILS OF CENTRAL IOWA (1993) (58)
- Swine manure management plans in North-Central Iowa: Nutrient loading and policy implications (2000) (56)
- A Field Study of the Agricultural Use of Sewage Sludge: I. Effect on Crop Yield and Uptake of N and P (1977) (56)
- Paper Mill Sludge Disposal on Soils: Effects on the Yield and Mineral Nutrition of Oats (Avena sativa L.) 1 (1972) (54)
- Factors Affecting the Lime Requirements of Wisconsin Soils (1963) (54)
- Nitrogen Transformations During Subsurface Disposal of Septic Tank Effluent in Sands: II. Ground Water Quality 1 (1973) (54)
- Evaluation of Nitrapyrin as a Means of Improving N Efficiency in Irrigated Sands1 (1978) (54)
- Arsenic ‐ phosphorus interactions on corn (1970) (53)
- Sources of reactive nitrogen affecting ecosystems in Latin America and the Caribbean: current trends and future perspectives (2006) (52)
- Columns Representing Mound‐type Disposal Systems for Septic Tank Effluent: II. Nutrient Transformations and Bacterial Populations (1974) (52)
- Eh STATUS OF LAKE SEDIMENT‐WATER SYSTEMS IN RELATION TO NITROGEN TRANSFORMATIONS1 (1973) (50)
- Nitrification in Sediments of Selected Wisconsin Lakes1 (1972) (50)
- Determination of total mercury in sediments and soils. (1972) (49)
- Effects of Reducing Nutrient Loads to Surface Waters within the Mississippi River Basin and the Gulf of Mexico (1999) (49)
- Environment. Sustainable development of the agricultural bio-economy. (2007) (48)
- Nitrogen and Sulfur in Precipitation and Sulfur Dioxide in the Atmosphere in Wisconsin (1972) (48)
- Nitrogen and phosphorus release from decaying water milfoil (1973) (48)
- Nitrogen transformations in flooded rice soils (1986) (48)
- Gas Production in Sediments of Lake Mendota, Wisconsin 1 (1972) (48)
- Methane Formation by Lake Sediments during in Vitro Incubation (1973) (47)
- A bioassay to determine the effect of organic matter and pH on the effectiveness of nitrapyrin (N-Serve) as a nitrification inhibitor (1979) (44)
- Characterization of Mineralizable Nitrogen in Soils1 (1966) (44)
- Determination of nitrate in waters with the nitrate-selective ion electrode. (1970) (44)
- Effectiveness of Nitrapyrin in Controlling Nitrification of Fall and Spring‐Applied Anhydrous Ammonia 1 (1978) (43)
- Soil Type, Precipitation, and Fertilizer N Effects on Corn Yields (1990) (43)
- Availability of Cu, Zn and Mn in soils: I.—Influence of soil pH, organic matter, and extractable phosphorus (1971) (43)
- Nitrate and Chloride Movement in the Plainfield Loamy Sand Under Intensive Irrigation (1974) (43)
- Evaluation of a Sulfur‐Thiobacillus denitrificans Nitrate Removal System (1976) (42)
- Crop Recovery and Nitrification of Fall and Spring Applied Anhydrous Ammonia1 (1975) (42)
- Chapter 1. The Nitrogen Cycle, Historical Perspective, and Current and Potential Future Concerns (2008) (42)
- Sustainable agriculture: definition and concepts (1990) (42)
- Nitrogen and Chloride Uptake by Irrigated Russet Burbank Potatoes1 (1977) (40)
- Methylmercury Formation in Mercury‐Treated River Sediments During in situ Equilibration (1974) (40)
- Guidelines for the application of wastewater sludge to agricultural land in Wisconsin (1975) (39)
- Ability of nitrapyrin, dicyandiamide and acetylene to retard nitrification in a mineral and an organic soil (1987) (39)
- Determination and Isotope-Ratio Analysis of Different Forms of Nitrogen in Soils: 7. Urea1 (1967) (37)
- USE OF THE COLEMAN MODEL 29A ANALYZER FOR TOTAL NITROGEN ANALYSIS OF SOILS (1967) (37)
- Managing Risks of Nitrates to Humans and the Environment (2000) (32)
- Influence of Hydrology, Soil Properties, and Agricultural Land Use on Nitrogen in Groundwater (1991) (31)
- Proceedings of the Workshop on Utilization of Municipal Wastewater and Sludge on Land (1984) (31)
- Determination of organic- and carbonate-carbon in freshwater lake sediments by a microcombustion procedure (1970) (31)
- Effect of some physical and chemical factors on the rate of hydrolysis of Nitrapyrin (N-Serve) (1979) (30)
- Chapter 1 – The Nitrogen Cycle, Historical Perspective, and Current and Potential Future Concerns (2001) (29)
- Nitrate and Ammonium Contents of Wisconsin Limestones (1971) (29)
- A CASE FOR AGRICULTURAL SYSTEMS RESEARCH (1991) (28)
- Critique of the Acetylene Blockage Technique for Field Measurement of Denitrification (1986) (28)
- NITROGEN TRANSFORMATIONS IN AEROBIC AND WATERLOGGED HISTOSOLS (1973) (28)
- Protein and amino acid composition of maize grain as influenced by variety and fertility (1970) (27)
- Rate of aerobic nitrogen transformations in six acid climax forest soils and the effect of phosphorus and CaCO3 (1985) (27)
- Managing Nitrogen for Groundwater Quality and Farm Profitability: Overview and Introduction (2015) (27)
- Mercury accumulation by Myriophyllum spicatum L. (1971) (27)
- Distribution and background levels of mercury in sediment cores from selected wisconsin lakes (1973) (27)
- Sample preparation for and nitrogen isotope analysis by the NOI-4 emission spectroscope (1973) (26)
- Perspectives for research on development of nitrification inhibitors (1985) (26)
- Site of nitrous oxide production in field soils (1985) (25)
- Short-term cycling of N-urea in a ryegrasswhite clover pasture (1978) (24)
- Lysimeter and Field Measurements of Chloride and Bromide Leaching in an Uncultivated Loamy Sand1 (1977) (24)
- Nitrogen cycling in Lake Wingra (1976) (24)
- Nitrogen distribution in some Wisconsin lake sediments. (1970) (23)
- Determination of Reduced Inorganic Sulfur Forms as Sulfide by Zinc-Hydrochloric Acid Distillation (1972) (23)
- DETERMINATION OF SOIL CATION EXCHANGE CAPACITY BY A SIMPLE SEMIMICRO TECHNIQUE (1969) (22)
- Arsenic Phytotoxicity on a Plainfield Sand as Affected by Ferric Sulfate or Aluminum Sulfate (1972) (22)
- The Florida Experience: Land and Water Policy in a Growth State (1975) (22)
- Cadmium and zinc additions to wisconsin soils by commercial fertilizers and wastewater sludge application (1975) (21)
- Nitrogen, Phosphorus and Sulphur‐Global Cycles, SCOPE Report 7 (1977) (20)
- Carbon dioxide concentration in soil. Effects on nitrification, denitrification and associated nitrous oxide production (1985) (20)
- Effects of nitrification inhibitors on chemical composition of plants: A review (1984) (19)
- Feeding the Ten Billion: Plants and Population Growth. (1999) (18)
- BEHAVIOR AND PHYTOTOXICITY IN INORGANIC ARSENICALS IN SOILS, IN: WOOLSON, EA., ARSENICAL PESTICIDES (1975) (18)
- Aqua regia for quantitative recovery of mercuric sulfide from sediments (1974) (17)
- NITRATES IN PLANTS AND WATERS (1970) (17)
- Septic Nitrogen and Phosphorus Removal Test Systema (1976) (16)
- Nitrous Oxide Emission from Native and Reestablished Prairies in Southern Wisconsin (1987) (16)
- Biofuel and global biodiversity (2008) (16)
- THE FATE OF NITRATE IN LAKE SEDIMENT COLUMNS (1974) (15)
- Effect of Fertilizer Nitrogen, Variety and Maturity on the Dry Matter Yield and Nitrogen Fractions of Corn Grown for Silage1 (1969) (15)
- Dieldrin Uptake by Corn as Affected by Soil Properties 1 (1969) (14)
- Bugs in the System: Redesigning the Pesticide Industry for Sustainable Agriculture (1998) (14)
- Ethanol-stabilized chloroform as a fumigant for estimating microbial biomass by reaction with ninhydrin (1993) (13)
- Reducing nonpoint nitrogen to acceptable levels with emphasis on the Upper Mississippi River Basin (2002) (13)
- Public Agronomy: Norman Borlaug as ‘Brand Hero’ for the Green Revolution (2012) (13)
- Uptake of water and labelled nitrate at different depths in the root zone of potato plants grown on a sandy soil (1974) (13)
- Columns Representing Mound-Type Disposal Systems for Septic Tank Effluent: I. Soil-water and Gas Relations 1 (1974) (12)
- Sustainability: Defining the New Paradigm (1993) (12)
- The Dynamics of Nitrogen Transformations in the Soil (1970) (12)
- Availability of Cu, Zn and Mn in soils: II.—Chemical extractability (1971) (11)
- A Self‐Watering System for Growing Plants in Potted Soils1 (1971) (11)
- Nitrogen and the Upper Mississippi River (2000) (11)
- Glucose-induced nitrate assimilation in prairie and cultivated soils (1993) (11)
- Availability of Cu, Zn and Mn in Soils: III.—Predictability of plant uptake (1971) (10)
- Acetylene-Reduction Assay of Anaerobic Nitrogen Fixation by Sediments of Selected Wisconsin Lakes 1 (1973) (10)
- Environmental Role of Nitrogen‐fixing Blue‐green Algae and Asymbiotic Bacteria (1979) (9)
- Principles of Microbial Processes of Chemical Degradation, Assimilation, and Accumulation (1983) (9)
- Denitrification in Lake Sediments (1973) (9)
- The Role of Sediments in the Nitrogen Budget of Lower Green Bay, Lake Michigan (1983) (9)
- Nitrogen fixation in lake sediments: contribution to nitrogen budget of Lake Mendota. (1973) (9)
- Effects of Hypolimnetic Aeration on Nitrogen Transformations in Simulated Lake Sediment-Water Systems 1 (1979) (8)
- Halide analysis in soils with a chloride titrator and a bromide electrode (1976) (8)
- Dieldrin Translocation and Accumulation in Corn1 (1969) (8)
- Determination of (Nitrate + Nitrite )‐N in alkaline permanganate solutions (1972) (7)
- Impact of Sustainable Agriculture Programs on U. S. Landgrant Universities (1995) (7)
- Short-term transformation of applied 15NO3− prairie and cultivated soils (1995) (7)
- Chemical Properties of Soils (2015) (7)
- Specific Ion Electrodes: Techniques and Uses in Soil, Plant, and Water Analysis (2015) (7)
- Towards standardization of soil extracts for microbial media. (1968) (6)
- 2. Nitrogen transformations in flooded rice soils (2005) (6)
- A simple steam distillation method of estimating β-hydroxy-α-amino acids☆ (1967) (6)
- Identification and estimation of readily mineralizable nitrogen in soils (1965) (6)
- Soil science in the last 100 years: introductory comments. (2000) (5)
- Building Bridges: The American Society of Agronomy and the World (1994) (4)
- Fate of Fall and Spring Applied 15N‐Labeled Aqueous Ammonia in Porous, Buried Bags1 (1975) (4)
- Sustainable Agriculture and the Environment (2019) (4)
- Improved Technique for Marking and Sampling Band‐Applied Fertilizers and Pesticides1 (1978) (4)
- Prediction of the quality of water in a proposed impoundment in Southwestern Wisconsin, USA (1978) (3)
- Droughts, Floods, and Sustainability (1994) (3)
- Air pollution injury of potato plants grown in a growth chamber (1974) (3)
- Mathematical modeling of soil--water--nitrogen phenomena (1974) (3)
- Effect of soil fertility on the quality of crops grown for silage. 2. The effect of potassium, variety, and stage of maturity on the carbohydrate and nitrogenous fractions of corn and on the quality of the resultant corn silage. (1968) (3)
- Fate of 15N‐Labeled Anhydrous Ammonia under Simulated Fall and Spring Conditions1 (1975) (3)
- Effect of soil fertility on the quality of crops grown for silage. 1. The effect of nitrogen, phosphorus, and potassium on the nitrogenous fractions of corn and on the quality of the resultant corn silage. (1968) (3)
- A Systems Approach to an Analysis of the Terrestrial Nitrogen Cycle (1972) (2)
- Agricultural Contribution of Nitrate-N to the Des Moines River: 1945 vs. 1980 (1992) (2)
- Mineralization of nitrogen from legume residues (1985) (2)
- Approach for Estimating Yield Response to Nitrogen Based on Nitrogen-Rate Requirement Parameters (1991) (2)
- Influence of two “nitrogen regulators”; on soil n transformations and movement (1979) (2)
- Long term experiments in agricultural and ecological sciences : R. A. Leigh and A. E. Johnston, Harpenden, UK, Rothamsted Experimental Station. CAB International, 1994, 428 pp. Price: US$95 (hardback). ISBN 0 85198 933 0 (1997) (1)
- AVAILABILITY OF CU, ZN, AND MN AS INFLUENCED BY APPLICATION OF CU-POLYFLAVONOID (1974) (1)
- NLEAP Software Package Installation and Startup (1991) (1)
- Sustainable agricultural resources: The role of land-grant universities (1991) (1)
- GMOs and Corporate Control of Agriculture (2014) (1)
- Michael Morris: Factory Farming and Animal Liberation in New Zealand (2012) (1)
- Interactions of Sewage Sludge with Soil-Crop-Water Systems (2015) (1)
- Chemical differentiation of selected Wisconsin histosols. (1970) (1)
- Pesticides in World Agriculture: Causes, Consequences and Alternative Courses (2014) (1)
- Research to Meet Natural Resource Needs in the 1990s (1993) (1)
- Available Nitrogen in Rural Ecosystems: Sources and Fate1 (1972) (1)
- Availability of and crop response to sulfur in Wisconsin. (1969) (1)
- Modern Agriculture and the Environment (1998) (0)
- Corn-Based Ethanol: The Good, the Bad and the Ugly (2008) (0)
- Chromatographic Analysis of the Environment (1976) (0)
- Microbiological aspects of the pollution of fresh water with inorganic nutrients. (1971) (0)
- Feeding a World Population of More Than Eight Billion People: A Challenge to Science. (1999) (0)
- NITROGEN TRANSFORMATIONS IN SEDIMENTS AS AFFECTED BY CHEMICAL AMENDMENTS (1973) (0)
- Sustainability of agricultural systems in transition : proceedings of an international symposium ... held at the 90th annual meetings of ASA, CSSA, and SSSA, 20-22 Oct. 1998 in Baltimore, MD (2001) (0)
- Michael Morris: Factory Farming and Animal Liberation in New Zealand (2011) (0)
- World Bank Opening Remarks—An Action Plan to Meet the Challenges (2001) (0)
- Agricultural and the Citizen. (1998) (0)
- Crop Protection—Discussion (2015) (0)
- Factors affecting bioavailability of cadmium. Final report, 1980-1986 (1987) (0)
- Nitrogen in Agriculture Nitrogen in the Environment, Volume I: Nitrogen Behavior in Field Soil Donald R. Nielsen J. G. MacDonald Nitrogen in the Environment, Volume II: Soil-Plant-Nitrogen Relationships Donald R. Nielsen J. G. MacDonald (1978) (0)
- Wrap-up: What We Have Learned (1996) (0)
- Book Review:Nitrogen Cycling in Ecosystems of Latin America and the Caribbean. G. P. Robertson, R. Herrera, T. Rosswall (1984) (0)
- RETIRED AGRICULTURAL ECONOMIST SPEAKS OUT (2003) (0)
- The Leopold Center for Sustainable Agriculture: An Overview (1989) (0)
- The Human Factor in Sustainable Agriculture (1999) (0)
- Reducing Nutrients in the Mississippi River and the Gulf of Mexico (2015) (0)
- Assessing sustainability in agricultural systems of South Brazil. (2001) (0)
- Use of Variations in Natural Nitrogen Isotope Abundance for Environmental Studies: A Questionable Approach (1972) (0)
- Sustainability: Defining the New Paradig (0)
- The Connection Between Soil Conservation and Sustainable Agriculture (2018) (0)
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