Relationships between Aggregation and Hyphal Length and Microbial Biomass C in Soil Amended with Rice Straw or Azolla
スポンサーリンク
概要
- 論文の詳細を見る
The influence of the addition of rice straw (Oryza sativa) or azolla (Azolla pinnata) to soil on soil aggregation, hyphal length, and microbial biomass C was compared using four different systems. RS 1 and AZ 1 systems contained smaller amounts (2g of C kg^<-1> soil) of rice straw and azolla, respectively. RS 2 and AZ 2 systems contained larger amounts (6 g of C kg^<-1> soil) of rice straw and azolla, respectively. These plant materials were amended with soil, and the mixtures were incubated at 30℃ for 3 and 28 weeks under upland conditions. The amendment with plant material of rice straw or azolla increased the amounts of the >2.0 mm aggregates and microbial biomass C and the hyphal length to a larger extent compared to the control system (without plant materials). These degrees of increases varied depending on the kind and amount of the plant materials amended and the incubation periods, and tended to be much higher for 28 weeks than for 3 weeks incubation. For example, after 28 weeks incubation, the amount of the >2.0 mm aggregates was usually 13 times larger in the RS 2 and AZ 2 systems, compared to the control system. In the rice straw and azolla systems after 3 weeks incubation, the increasing patterns of the amount of the >2.0 mm aggregates were generally similar to those of the hyphal length and the amount of microbial biomass C. On the other hand, in the rice straw systems after 28 weeks incubation, the increasing patterns of the amount of the >2.0 mm aggregates were similar to those of the microbial biomass C. Whereas, in the azolla systems, the increasing patterns of the >2.0 mm aggregates were similar to those of the hyphal length. These findings seem to suggest that during long term incubation in the rice straw systems, microbial biomass played more important role than hyphae in the formation of the >2.0 mm aggregates. In contrast, in the azolla systems, the hyphae played more important role in the formation of the >2.0 mm aggregates. These may be due to the differences of the amounts of carbohydrate and C/N ratio between the rice straw and azolla. The amendments of rice straw or azolla tended to increase the amounts of the 0.1-0.25 mm and 0.25-0.5 mm aggregates. In contrast, these amendments decreased the amounts of the 0.5-1.0 mm and 1.0-2.0 mm aggregates to some extent. In the RS 2 and AZ 2 systems after 28 weeks incubation, the amount of the <0.1 mm aggregates decreased to a large extent.
- 日本ペドロジー学会の論文
- 1999-12-31
著者
-
Ibrahim Saiyed
Faculty Of Agriculture Yamaguchi University
-
Shindo Haruo
Faculty Of Agriculture Nagoya University
関連論文
- Microscopic Observation of Charred Plant Fragments Isolated from Several Ando Soil Samples by the Specific Gravity Method
- Measurement of Fluorocarbon Radicals Generated from C_4F_8/H_2 Inductively Coupled Plasma : Study on SiO_2 Selective Etching Kinetics
- RF Selfbias Voltage and Sheath Width in Inductively Coupled Chlorine Plasma
- Microloading Effect in Highty Selective Si0_2 Contact Hole Etching Employing Inductively Coupled Plasma
- Effect of Magnetic Field to Etching Characteristics of Inductively Coupled Plasma ( Plasma Processing)
- High Rate and Highly Selective SiO_2 Etching Employing Inductively Coupled Plasma
- RF Self-Bias Characteristics in Inductively Coupled Plasma
- Al Etching Characteristics Ernploying Helicon Wave Plasma
- Compact Electron Cyclotron Resonance Plasma-Etching Reactor Employing Permanent Magnet : Etching
- Compact Electron Cyclotron Resonance Plasma-Etching Reactor Employing Permanent Magnet
- Si Etching with Low Ion Energy in Low-Pressure Electron Cyclotron Resonance Plasma Generated by Longitudinal and Multipole Magnetic Fields
- High Etch Rate Modes in Microwave Plasma Etching of Silicon in High Magnetic Fields : Etching and Deposition Technology
- High Etch Rate Modes in Microwave Plasma Etching of Silicon in High Magnetic Fields
- Structural properties of plant charred materials in Andosols as revealed by X-ray diffraction profile analysis(Soil Chemistry and Soil Mineralogy)
- Contribution of charred and buried plant fragments to humic and fulvic acids in Japanese volcanic ash soils(Soil Chemistry)
- Humus and Phosphorus Composition of 3 Lake Sediments in Yamaguchi Prefecture
- Floating Potential in Negative-Ion-Containing Plasma
- Effect of Continuous Compost Application on Water-Stable Soil Macroaggregation in a Field Subjected to Double Cropping
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : IX. Distribution of Phenolic Acids in Soils of Paddy Fields and Forests
- Effects of carbonaceous materials on the accumulation of readily mineralizable organic nitrogen in soil
- Behavior of phenolic substances in the decaying process of plants : X. Distribution of phenolic acids in soils of greenhouses and fields
- COMPARISON OF HUMIC ACIDS FROM CHARRED RESIDUES OF SUSUKI (EULALIA, Miscanthus sinensis A.) AND FROM THE A HORIZONS OF VOLCANIC ASH SOILS
- HUMUS COMPOSITION OF CHARRED PLANT RESIDUES
- POLYMERIZATION OF HYDROQUINONE AS INFLUENCED BY SELECTED INORGANIC SOIL COMPONENTS
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : VIII. Changes in the Quality and Quantity of Phenolic Substances in the Decaying Process of Rice Straw, Ladino Clover, and Red Oak Leaves
- Sheath Width in Negative-Ion-Containing Plasma
- Catalytic Synthesis of Humic Acids from Phenolic Compounds by Mn(IV) Oxide (Birnessite)
- OXIDATIVE COUPLING ACTIVITY IN CITRATE BUFFER EXTRACTS OF SOILS
- Elementary Composition, Humus Composition, and Decomposition in Soil of Charred Grassland Plants
- OXIDATIVE COUPLING ACTIVITY IN SOILS OF PADDY AND UPLAND FIELDS
- Distribution of charred plant fragments in particle size fractions of Japanese volcanic ash soils(Soil Chemistry and Mineralogy)
- Emissive Probe Study of CF_4/H_2 Etching Plasma
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : VII. Characteristics of Phenolic Substances in the Humic Acids of Decayed Rice Straw and Compost-Supplied Field Soil
- Role of Catalytic Effect and Components of Volcanic Ash in the Synthesis of Humic Acids from Phenolic Compounds
- Relative Effectiveness of Short-Range Ordered Mn(IV), Fe(III), Al, and Si Oxides in the Synthesis of Humic Acids from Phenolic Compounds
- Analysis of Water-Stable Soil Aggregates with Special Reference to Degree of Aggregation
- Relationships between Aggregation and Hyphal Length and Microbial Biomass C in Soil Amended with Rice Straw or Azolla
- Role of Active Aluminum in the Formation of Water-Stable Macroaggregates
- Catalytic Role of Mn(IV) Oxide in the Formation of Humic-Enzyme Complexes in the Soil Ecosystem
- Changes in microbial biomass after continuous application of azolla and rice straw in soil
- Mineralization and changes in microbial biomass in water-saturated soil amended with some tropical plant residues
- Mineralization and microbial biomass formation in upland soil amended withs some tropical plant residues at different temperatures
- Adsorption, Activity, and Kinetics of Acid Phosphatase as Influenced by Selected Oxides and Clay Minerals
- Relationship between distribution of charred plant residues and humus composition in chernozemic soils
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : III. Degradation Pathway of Phenolic Acids
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : VI. Changes in Quality and Quantity of Phenolic Substances in the Decaying Process of Rice Straw in a Soil
- Comparison of the Influence of Cu, Zn, and Cd on the Activity and Kinetics of Free and Immobilized Acid Phosphatase
- Changes in the Humus Composition of Volcanic Ash Soils by Heating at Various Temperatures
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : I. Identification and Quantitative Determination of Phenolic Acids in Rice Straw and Its Decayed Product by Gas Chromatography
- Comparison of Humus Composition of Charred Susuki (Eulalia, Miscanthus sinensis) Plants before and after HNO_3 Treatment
- Comparison of Elementary and Humus Composition of Woody Plants before and after Burning (Soil Chemistry and Mineralogy)
- BEHAVIOR OF PHENOLIC SUBSTANCES IN THE DECAYING PROCESS OF PLANTS : V. Elution of Heavy Metals with Phenolic Acids from Soil
- Relationship between distribution of charred plant residues and humus composition in chernozemic soils
- Relationships between Aggregation and Hyphal Length and Microbial Biomass C in Soil Amended with Rice Straw or Azolla
- Analysis of Water-Stable Soil Aggregates with Special Reference to Degree of Aggregation