Chapter 5 Soil Organic Carbon, Nitrogen and Fertility

Nitrogen Mineralization Potentials of Soils

1972 • 1,338 citations

COMPARATIVE STUDY OF DECOMPOSITION RATES OF ORGANIC MATTER IN TEMPERATE AND TROPICAL REGIONS

1949 • 634 citations

Ammonium Production in Soil under Waterlogged Conditions as an Index of Nitrogen Availability

1964 • 615 citations

Factors of Soil Formation

1941 • 609 citations

Radiocarbon Concentration in Modern Wood

1955 • 540 citations

Ecology of Fire in Grasslands

1968 • 516 citations

Carbon 13 in Plants and the Relationships between Carbon 13 and Carbon 14 Variations in Nature

1954 • 419 citations

Nitrogen Mineralization‐Water Relations in Soils

1974 • 393 citations

Comparison and Evaluation of Laboratory Methods of Obtaining an Index of Soil Nitrogen Availability¹

1966 • 385 citations

Addition, Decomposition and Accumulation of Organic Matter in Forests

1968 • 374 citations

Nitrification in soils after different periods of dryness

1960 • 370 citations

Soil‐Plant Relationships

1968 • 355 citations

Mineralization of Organic Nitrogen in Soil

1955 • 344 citations

TEMPERATURE COEFFICIENT OF SOIL NITROGEN MINERALIZATION

1973 • 336 citations

EFFECT OF DRYING AND FREEZING SOILS ON CARBON DIOXIDE PRODUCTION, AVAILABLE MINERAL NUTRIENTS, AGGREGATION, AND BACTERIAL POPULATION

1961 • 300 citations

Tracer studies on nitrogen transformations in soil with special attention to mineralizationimmobilization relationships.

1958 • 299 citations

The Fate of Nitrogen Applied to Soils

1966 • 296 citations

Effects of Increasing Amounts of Organic Residues on Continuous Corn: II. Organic Carbon, Nitrogen, Phosphorus, and Sulfur¹

1972 • 283 citations

The effect of aggregate disruption on the activity of microorganisms in the soil

1957 • 264 citations

SOLUBILIZATION OF MINERALS AND RELATED MATERIALS BY 2-KETOGLUCONIC ACID-PRODUCING BACTERIA

1963 • 221 citations

APPLICABILITY OF THE CARBON-DATING METHOD OF ANALYSIS TO SOIL HUMUS STUDIES

1967 • 221 citations

STUDIES ON THE DECOMPOSITION OF C14 LABELLED ORGANIC MATTER IN SOIL

1971 • 193 citations

Some observations on the microbial activity in remoistened air-dried soils

1956 • 171 citations

Fire and the Nitrogen Cycle in California Chaparral

1973 • 171 citations

Turnover of microbial tissue in soil under field conditions

1973 • 169 citations

Effects of neutral salts on carbon and nitrogen mineralisation of organic matter in soil

1974 • 144 citations

Humus Decomposition in East African Soils

1956 • 135 citations

The Effect of Soil Moisture Tension on Carbon Dioxide Evolution, Nitrification, and Nitrogen Mineralization

1964 • 133 citations

Ammonia released on Treating Soils with N Sodium Hydroxide as a Possible Means of predicting the Nitrogen-supplying Power of Soils

1960 • 129 citations

CAUSES OF THE HIGH NITROGEN AND ORGANIC MATTER CONTENT OF CERTAIN TROPICAL FOREST SOILS

1950 • 125 citations

Accumulation of organic matter in some New Zealand soils under permanent pasture

1964 • 125 citations

Effect of Cultivation on the Nitrogen Distribution in Soils

1964 • 117 citations

Losses of Wheat Straw Residue Under Simulated Field Conditions

1970 • 111 citations

A Chemical Index of Soil Nitrogen Availability

1966 • 105 citations

NITROGEN RELEASE OF VEGETABLE CROP RESIDUES DURING INCUBATION AS RELATED TO THEIR CHEMICAL COMPOSITION

1960 • 103 citations

Effect of climate and cultivation on nitrogen and organic matter reserves in Indian soils

1960 • 101 citations

Nutrient Availability in Desert Grassland Soils Under Mesquite (Prosopis juliflora) Trees and Adjacent Open Areas

1973 • 99 citations

Influence of Simulated Fall and Spring Conditions on the Soil System. I. Effect on Soil Microflora

1971 • 99 citations

DECOMPOSITION OF ¹⁴C-LABELLED PLANT MATERIAL UNDER FIELD CONDITIONS

1973 • 98 citations

CONCENTRATIONS OF SOIL NUTRIENTS BEFORE AND AFTER FIRE

1970 • 96 citations

EFFECTS OF CULTIVATION ON THE ORGANIC MATTER OF GRASSLAND SOILS AS DETERMINED BY FRACTIONATION AND RADIOCARBON DATING

1974 • 96 citations

EFFECT OF PLOUGHING AND DIRECT DRILLING ON SOIL NITRATE CONTENT

1975 • 92 citations

Priming Effect of ¹⁵N‐Labeled Fertilizers on Soil Nitrogen in Field Experiments

1973 • 90 citations

Radiocarbon from Nuclear Tests, II

1960 • 88 citations

Net mineralization of nitrogen in leaves and leaf litter of Desmodium intortum and Phaseolus atropurpureus mixed with soil

1973 • 86 citations

Nitrification of Ammonium Sulfate in a Calcareous Soil as Influenced by Combinations of Moisture, Temperature, and Levels of Added Nitrogen

1962 • 86 citations

Estimates of Potentially Mineralizable Soil Nitrogen Based on Short‐Term Incubations

1974 • 86 citations

Chemical tests for potentially available nitrogen in soil

1968 • 85 citations

Effect of Salts and Salts Plus Nitrogen‐15‐Labeled Ammonium Chloride on Mineralization of Soil Nitrogen, Nitrification, and Immobilization

1974 • 82 citations

Laboratory and Greenhouse Investigations of Nitrogen Immobilization

1962 • 81 citations

Influence of Temperature on Nitrification in Soils

1956 • 75 citations

MINERALIZATION OF CARBON AND NITROGEN IN SOME NEW ZEALAND ALLOPHANIC SOILS

1964 • 74 citations

Soil Aggregation as Influenced by Microbial Gums, Level of Fertility and Kind of Crop

1954 • 71 citations

Decomposition in the Field of Buried and Surface‐Applied Cornstalk Residue

1962 • 71 citations

The critical relationship between soil moisture content in the region of wilting point and the mineralization of natural soil nitrogen

1957 • 71 citations

Incorporation of 15N‐Tagged Mineral Nitrogen into Stable Forms of Soil Organic Nitrogen

1971 • 70 citations

Effect of Added Salts on Nitrogen Mineralization in Three California Soils

1971 • 70 citations

SOIL MICROBIAL ACTIVITY AS INFLUENCED BY TEMPERATURE TRENDS AND FLUCTUATIONS

1973 • 69 citations

FACTOR AFFECTING THE ACCURACY OF THE CARBONDATING METHOD IN SOIL HUMUS STUDIES

1967 • 68 citations

Influence of Crop Growth on Mineralization of Nitrogen in the Soil

1949 • 63 citations

Factors affecting immobilization and release of nitrogen in soil and chemical characteristics of the nitrogen newly immobilized

1969 • 63 citations

Effect of Soil Moisture on Ammonification and Nitrification in Two Northern Plains Soils

1966 • 62 citations

ACCURACY OF FIELD SAMPLING FOR SOIL TESTS

1971 • 62 citations

BALANCE SHEET AND RESIDUAL EFFECTS OF FERTILIZER NITROGEN IN A 6-YEAR STUDY WITH N15

1963 • 61 citations

Effect of Added Salts on Nitrogen Release and Nitrate Levels in Forest Soils of the Washington Coastal Area

1975 • 61 citations

Estimating the Nitrogen Delivery of Soil from the Organic Matter Determination as Reflected by Sanborn Field

1950 • 61 citations

ESTIMATING POTENTIALLY MINERALIZABLE SOIL NITROGEN FROM A CHEMICAL INDEX OF SOIL NITROGEN AVAILABILITY1

1976 • 59 citations

The effect of intermittent drying and wetting of a calcareous soil on carbon and nitrogen mineralization

1967 • 58 citations

Chemical Distribution of Added Nitrogen in Soils

1963 • 57 citations

NITRATE NITROGEN IN THE SOIL AS A MEANS OF PREDICTING THE FERTILIZER NITROGEN REQUIREMENTS OF BARLEY

1971 • 55 citations

NITROGEN AND ORGANIC MATTER CONTENTS OF EQUATORIAL SOILS OF COLOMBIA, SOUTH AMERICA

1948 • 54 citations

Factors Affecting the Accumulation and Loss of Nitrogen and Organic Carbon in Cropped Soils¹

1933 • 54 citations

Metallo‐Organic Interactions Associated with Podzolization

1963 • 54 citations

Effect of grinding on the decomposition of soil organic matter—I. The mineralization of organic nitrogen in relation to soil type

1972 • 54 citations

Crop husbandry on naturally compacted soils.

1970 • 53 citations

RELATIVE CONTRIBUTION OF ORGANIC AND CLAY FRACTIONS TO CATION-EXCHANGE CAPACITY OF SANDY SOILS FROM SEVERAL SOIL GROUPS

1967 • 53 citations

Soil nitrogen availability evaluations based on nitrogen mineralization potentials of soils and uptake of labeled and unlabeled nitrogen by plants

1973 • 51 citations

Utilization of Soil and Fertilizer N by Oats in Relation to the Available N Status of Soils

1967 • 50 citations

BIOLOGICAL ACTIVITY AND MINERALIZATION OF NITROGEN IN THREE SOILS AS INDUCED BY FREEZING AND DRYING

1963 • 49 citations

Use of Deep-Freezing in the Preservation and Preparation of Fresh Soil Samples

1958 • 49 citations

The Origin, Nature, and Importance of Soil Organic Constituents having Base Exchange Properties¹

1932 • 48 citations

Effect of Chloride Salts on Ammonium Nitrogen Release in Two Hawaiian Soils

1969 • 48 citations

Nitrogen, a major limitation in the productivity of natural communities, crops and pastures in the pacific area

1973 • 47 citations

EFFECT OF FLUCTUATING TEMPERATURES ON SOIL NITROGEN MINERALIZATION

1975 • 47 citations

Immobilization and Mineralization of Nitrogen in Several Organic Fractions of Soil

1963 • 47 citations

Sugarbeet Yield and Quality as Affected by Nitrogen Level¹

1976 • 45 citations

Soil Nitrogen and Carbon Mineralization as Affected by Drying-Rewetting Cycles

1971 • 45 citations

Reversion of Fertilizer Nitrogen in Soils

1967 • 43 citations

Methods of measuring available nutrients in West Indian soils

1971 • 42 citations

FRACTIONATION OF SOIL HUMATE WITH PHENOLIC SOLVENTS AND PURIFICATION OF THE NITROGEN-RICH PORTION WITH POLYVINYLPYRROLIDONE

1973 • 42 citations

The Availability of Fertilizer Nitrogen Immobilized During Decomposition of Straw

1963 • 39 citations

SOIL ORGANIC MATTER AND CROP YIELDS AS INFLUENCED BY THE FREQUENCY OF SUMMERFALLOWING

1968 • 39 citations

Effects of alkali salts on carbon and nitrogen mineralization of organic matter in soil

1976 • 38 citations

Soil components, 1. Organic Components

1976 • 38 citations

SEPARATION OF THE LIGHT FRACTION FROM SOILS BY ULTRASONIC DISPERSION IN HALOGENATED HYDROCARBONS CONTAINING A SURFACTANT

1969 • 38 citations

CORRELATION OF SOIL N AVAILABILITY INDEXES WITH N UPTAKE BY PLANTS

1968 • 38 citations

INFLUENCE OF FLUCTUATING TEMPERATURES AND CONSTANT SOIL MOISTURES ON NITROGEN CHANGES IN AMENDED AND UNAMENDED LOAM

1972 • 36 citations

The effect of nitrogen fertilization on the release of soil nitrogen

1968 • 35 citations

EXTRACTABLE ORGANIC NITROGEN AND NITROGEN MINERALIZATION IN SOILS

1968 • 34 citations

Water Repellency and Infiltration Resistance of Organic‐Film‐Coated Soils

1970 • 33 citations

Factors affecting immobilization and release of nitrogen in soil and chemical characteristics of the nitrogen newly immobilized

1969 • 33 citations

Contribution of Organic Matter to the Cation Exchange Capacity of Soils

1965 • 32 citations

Soil Organic Matter and Nitrogen Changes During 24 Years of Dryland Wheat Tillage and Cropping Practices

1968 • 31 citations

Mineralization of the carbon and nitrogen of plant material added to soil and of the soil humus during incubation following periodic drying and rewetting of the soil

1968 • 31 citations

Influence of Simulated Fall and Spring Conditions on the Soil System: II. Effect on Soil Nitrogen

1971 • 31 citations

Total soil nitrogen and nitrogen mineralization

1970 • 31 citations

First experiences with direct drilling in Germany.

1970 • 29 citations

ORGANIC MATTER AND NITROGEN BUILD-UPS IN SOME PUERTO RICAN SOIL PROFILES

1951 • 28 citations

VARIABLES AFFECTING A VALUES AS A MEASURE OF SOIL NITROGEN AVAILABILITY

1970 • 28 citations

A MATHEMATICAL TREATMENT OF THE EFFECT OF CROPPING SYSTEM ON SOIL ORGANIC NITROGEN IN TWO LONG-TERM SEQUENTIAL EXPERIMENTS

1975 • 27 citations

Predicting Nitrogen Availability to Rice: I. Comparison of Methods for Determining Available Nitrogen to Rice from Field and Reservoir Soils

1967 • 26 citations

EFFECT OF VARIOUS PERIODS OF SEED-DOWN TO ALFALFA AND BROMEGRASS ON SOIL NITROGEN

1971 • 26 citations

Soil organic nitrogen mineralization as affected by low soil water potentials

1968 • 25 citations

Soil Aggregates Do Not Necessarily Break Down Over-Winter

1964 • 25 citations

Wheat Yields and Soil Fertility on the Canadian Prairies after a Half Century of Farming

1954 • 24 citations

Prediction of Nitrogen Fertilizer Requirements of Field Crops. II. Application of Theoretical Models to Malting Barley¹

1970 • 24 citations

EFFECTS OF GROWING SEASON SOIL TEMPERATURE, MOISTURE, AND NH₄-N ON SOIL NITROGEN

1974 • 24 citations

EXTRCTION OF SOIL ORGANIC NITROGEN BY AUTOCLAVING IN WATER

1969 • 24 citations

Effects of Long‐Time Cropping on Hydrolyzable Organic Nitrogen Fractions in Some Great Plains Soils

1964 • 23 citations

Mineralization and Immobilization of Nitrogen in Bacterial Cells and in Certain Soil Organic Fractions

1966 • 23 citations

HERBICIDAL EFFECTS ON CERTAIN SOIL MICROBIAL ACTIVITIES IN SOME BROWN SOILS OF SASKATCHEWAN

1964 • 23 citations

FEATURES OF NITRATE ACCUMULATION IN UGANDA SOIL*

1957 • 23 citations

Nitrogen mineralization and nitrification during incubation of East Pakistan ‘tea’ soils in relation to pH

1972 • 23 citations

Introduction to Soil Microbiology

1962 • 22 citations

EFFECT OF PLANT SPECIES ON THE AMINO ACID CONTENT AND NITRIFICATION OF SOIL ORGANIC MATTER

1967 • 22 citations

CONCEPTS, OBJECTIVES AND STRUCTURE OF THE CANADA SOIL INFORMATION SYSTEM

1975 • 21 citations

SOIL PARTICLE‐SIZE FRACTIONS AND NITROGEN MINERALIZATION

1967 • 20 citations

PARTIAL STERILIZATION OF SOIL, MICROBIOLOGICAL ACTIVITIES AND SOIL FERTILITY

1923 • 19 citations

Effects of Continuous Corn (Zea mays L.), Manuring, and Nitrogen Fertilization on Yield and Protein Content of the Grain and on the Soil Nitrogen Content¹

1973 • 19 citations

SOIL NITROGEN

1976 • 18 citations

EFFECT OF STRAW ON AVAILABILITY OF NITROGEN TO CEREAL CROPS

1964 • 18 citations

Nitrogen‐supplying Power of Some Tropical Soils of Puerto Rico and Methods for its Evaluation¹

1972 • 18 citations

LOSS OF SOME ELEMENTS IN FLY-ASH DURING OLD-FIELD BURNS IN SOUTHERN ONTARIO

1974 • 17 citations

Transformations of fertilizer nitrogen in soil

1970 • 17 citations

Evidence Regarding the Rate of Peat Growth

1961 • 17 citations

THE EFFECT OF FARM AND GREEN MANURES ON THE FERTILITY OF BLACKEARTH-MEADOW CLAY SOILS

1957 • 16 citations

Laboratory Methods for Estimating Plant Available Nitrogen in Soil¹

1971 • 16 citations

SIMULATED EARLY SPRING THAW CONDITIONS INJURIOUS TO SOIL MICROFLORA

1970 • 15 citations

Soil Nitrogen

1950 • 15 citations

EFFECTS OF FERTILIZER, BARNYARD MANURE, AND CROP RESIDUES ON IRRIGATED CROP YIELDS AND SOIL CHEMICAL PROPERTIES

1975 • 15 citations

EFFECT OF CROP RESIDUES AND FERTILIZER TREATMENTS ON THE YIELD AND PROTEIN CONTENT OF WHEAT

1957 • 15 citations

SNOW COVER EFFECT ON THE ERODIBLE SOIL FRACTION

1969 • 15 citations

The mineralization of nitrogen from some organic fractions in soil

1969 • 15 citations

On the stimulating effect of drying a soil and the retarding effect of drying a plant material

1976 • 15 citations

CONTRIBUTION OF CLAY AND ORGANIC MATTER TO CATION-EXCHANGE CAPACITY OF CHERNOZEMIC SOILS

1972 • 15 citations

NITRIFICATION IN AN ORCHARD SOIL UNDER THREE CULTURAL PRACTICES

1953 • 14 citations

Effect of Cultivation on the Nitrogen and Organic Carbon Contents of a Kansas Argiustoll (Chernozem)¹

1971 • 14 citations

A SIMPLE AVAILABLE SOIL NITROGEN INDEX

1968 • 14 citations

RELATIONSHIPS BETWEEN NITRATE IN SUMMER-FALLOWED SURFACE SOIL AND SOME ENVIRONMENTAL VARIABLES

1975 • 14 citations

A SIMPLE AVAILABLE SOIL NITROGEN INDEX

1968 • 13 citations

EXTRACTION OF SOIL ORGANIC NITROGEN BY AUTOCLAVING IN WATER

1970 • 13 citations

Effect of Fertilizers, Age of Stand, and Decomposition on Weight of Grass Roots and of Grass and Alfalfa on Soil Nitrogen and Carbon¹

1958 • 13 citations

Predicting Nitrogen Fertilizer Needs for Sugarbeets from Residual Nitrate and Mineralizable Nitrogen

1975 • 12 citations

EFFECT OF LONG-TERM ANNUAL ADDITIONS OF VARIOUS ORGANIC AMENDMENTS ON THE ORGANIC MATTER OF A CLAY AND A SAND

1968 • 12 citations

A study of soil nitrogen organic fractions and correlation with yield response of Sudan-sorghum hybrid grass on Quebec soils

1970 • 12 citations

Nuclear and Radio Chemistry

1960 • 12 citations

Comparison of the Effects of Chemical and Sweep Tillage Methods of Summer Fallow on Some Properties of Pullman Silty Clay Loam¹

1962 • 12 citations

COMPARISON OF TILLAGE AND CHEMICAL SUMMERFALLOW IN A SEMIARID REGION

1971 • 12 citations

EFFECT OF LONG-TERM ADDITIONS OF ORGANIC MATTER ON CROP YIELDS AND SOIL PROPERTIES

1968 • 12 citations

Effect of Nitrogenous Forms on Immobilization and Release of Nitrogen in Soil

1972 • 11 citations

EXTRACTION OF SOIL ORGANIC NITROGEN BY AUTOCLAVING IN WATER

1969 • 11 citations

Low-Temperature Research on Nitrate Release from Soil

1962 • 11 citations

Nitrogen Conservation under Corn Planted in Quackgrass Sod

1975 • 11 citations

Influence of the Copper, Zinc, Iron, and Aluminum Salts of Some Microbial and Plant Polysaccharides on Aggregation and Hydraulic Conductivity of Ramona Sandy Loam

1969 • 11 citations

EXTRACTION OF AMMONIA FIXED BY SOIL ORGANIC MATTER

1967 • 10 citations

Effect of Partial Removal of Soil Organic Nitrogen with Sodium Pyrophosphate or Sulfuric Acid Solutions on Subsequent Mineralization of Nitrogen

1968 • 10 citations

On a limit theorem in the theory of the laplace transformation

1958 • 9 citations

Measuring Soil Nitrogen Available to Crops in East Africa

1968 • 9 citations

THE MANGANESE CYCLE IN SOILS: II. FORMS OF SOIL MANGANESE IN EQUILIBRIUM WITH SOLUTION MANGANESE

1963 • 9 citations

Ammonia Sorption and Retention by Plant Residue Materials

1964 • 8 citations

Accumulative Effects of Manure and N on Continuous Corn and Clay Soil. II. Chemical Changes in Soil¹

1973 • 7 citations

Chemical Index for Available Soil Nitrogen

1968 • 5 citations

NITRIFICATION UNDER AND AFTER ALFALFA, BROME, TIMOTHY, AND WESTERN RYE GRASS: I. NITROGEN ABSORPTION OF HAY CROPS AND SUCCEEDING WHEAT CROPS

1939 • 5 citations

A LONG-TERM FIELD EXPERIMENT WITH COMMERCIAL FERTILIZERS AND MANURE.: II. FERTILITY LEVELS AND CROP YIELDS IN A ROTATION OF POTATOES, OATS AND HAY

1962 • 5 citations

Effect of the Application of Rye-Grass on the Contents of Individual Amino Acids and Amino Sugars Contained in the Organic Nitrogen in Soil

1972 • 4 citations

EFFECT OF IRRIGATED CROP ROTATIONS ON YIELD AND SOIL FERTILITY

1964 • 4 citations

FACTEURS QUI INFLUENCENT LA TENEUR DE LA MATIERE ORGANIQUE ET LES PROPRIETES D'ECHANGE CATIONIQUE DES HORIZONS Ap DES SOLS DE GRANDE CULTURE DU QUEBEC

1976 • 3 citations

Differential effect of carbon sources on nitrogen transformation in Hawaiian soils

1972 • 3 citations

A COMPARISON OF ANNUAL CROPS FOR SEED AND RESIDUE IN THE SEMI-ARID REGION OF WESTERN CANADA

1968 • 1 citations